Kalshi KXMLBSPREAD — Pro Baseball Spread Data
Every Kalshi “Pro Baseball Spread” contract of the day — every trade print and the complete Level-2 book, captured co-located with nanosecond venue and receive timestamps. 220 trading days as day bundles, €1 per day, bought as a guest with instant download. Pro Baseball Spread is a season market — days exist when MLB plays, and coverage continues when the league trades again.
Pro Baseball Spread on Kalshi — activity
Trades and USD turnover summed over every contract of the series across 22 captured days to 2026-10-29, from the recorded tick data — the per-day averages divide by the captured days. Buy share, quoted spread (in contract price cents, 0..1 = 100 ¢), best-bid/ask depth and Level-2 update counts are turnover-weighted over the same window.
One purchase, the whole series for a day
A series-day bundle contains every Pro Baseball Spread contract that was listed on Kalshi on that UTC day — traded or not — 8 contract files on the latest covered day. Each file carries the full raw feed: every trade print with price, size and side, plus Level-2 order-book updates, in the same zstd-compressed schema as our crypto venues. Event contracts quote 0..1; turnover is USD-normalized.
Coverage runs March 2026 – present — 220 trading days, 50.1 GB compressed in total. A day typically holds 196 contract files (up to 334 on the busiest day, 717 MB). Pick individual days in the shop calendar for €1 each; delivery is an instant per-file download or one archive for the whole day.
Pro Baseball Spread — development since capture
4,961,970 trades and $331.0M of USD turnover over 114 captured days since 2026-07-08 — record day 2026-07-25 with $7.7M, biggest single contract KXMLBSPREAD-26AUG141420STLCHC-CHC2 (STL vs CHC · 2026-08-14 18:20 UTC · spread · CHC 2) (2026-08-14, $1.0M).
| Month | Days | Trades | Turnover (USD) | Avg / day | Contracts traded | L2 updates | vs previous month |
|---|---|---|---|---|---|---|---|
| Oct 2026 | 29 | 464,752 | $25.0M | $861.8K | 574 | 52.7M | −72.7 % |
| Sep 2026 | 30 | 1,473,362 | $91.5M | $3.1M | 5,320 | 416.7M | −25.8 % |
| Aug 2026 | 31 | 1,636,521 | $123.3M | $4.0M | 4,247 | 242.9M | +35.2 % |
| Jul 2026 | 24 | 1,387,335 | $91.2M | $3.8M | — | — | — |
Kalshi Pro Baseball Spread — trades and USD turnover summed per calendar month (UTC) over every contract, from our own daily statistics of the recorded tick data. Days = captured UTC days; a partial month shows no month-over-month change. Contracts traded and L2 (order-book) updates exist for days captured with the extended statistics.
Pro Baseball Spread — did the favourite win?
The side the opening price favoured finished in the money 52 % of the time across 530 settled Pro Baseball Spread contracts that opened away from 50 ¢ among the day's most traded contracts, 2026-08-09 – 2026-10-29. Contracts opening at 30–40 ¢ — 193 of them — closed Yes 50 % of the time.
| Opening price | Contracts | Closed Yes | Closed No | Yes share | Open at last print |
|---|---|---|---|---|---|
| 10–20 ¢ | 71 | 30 | 31 | 49 % | 10 |
| 20–30 ¢ | 124 | 49 | 60 | 45 % | 15 |
| 30–40 ¢ | 193 | 80 | 79 | 50 % | 34 |
| 40–50 ¢ | 188 | 74 | 68 | 52 % | 46 |
| 50–60 ¢ | 63 | 32 | 19 | 63 % | 12 |
| other opening prices | 20 | 12 | 7 | 63 % | 1 |
| Total | 659 | 277 | 264 | 51 % | 118 |
Opening price = the contract's first recorded print on the first day it ranked among the day's ten most traded contracts of the series (not its listing price), grouped in 10 ¢ steps (contracts quote 0..1 = 100 ¢). Outcome implied by its last recorded print across the window (≥ 0.97 = Yes, ≤ 0.03 = No; the rest still open at the last print) — venues publish the official result, we record the market. The sample is the daily top-10 by turnover, so it leans towards the closest, most traded contests. Deciles with fewer than 20 contracts are folded into one row.
MLB markets on other prediction venues
Polymarket, predict.fun, OG.com also list MLB event markets — the same 30-day statistics side by side, each a day bundle of its own.
| Venue · series | Trades (30d) | Turnover (30d) | Avg spread | Top-1 depth | L2 updates / trade | Days archived | Price / day |
|---|---|---|---|---|---|---|---|
| Kalshi · Pro Baseball Spread (this page) | 280,746 | $14.2M | 1.94 ¢ | $41.0K | 101.4 | 220 | €1 |
| Polymarket · MLB (games & props) | 61,644 | $14.8M | 2.17 ¢ | $62.9K | 749.1 | 414 | €1 |
| predict.fun · MLB (games & props) | 8,017 | $712.2K | 1.49 ¢ | $32.8K | 231.6 | 21 | €1 |
| OG.com · MLB (games & props) | 112,102 | $6.6M | 2.07 ¢ | $61.7K | 265.8 | 24 | €1 |
30-day window of the statistics table, per venue's own series; spread in contract-price cents and best-bid/ask depth are turnover-weighted, L2 updates per trade = recorded order-book level updates ÷ trades. "—" = no statistics row in the window. Each venue settles its own contracts on its own rules — the series are comparable in subject, not interchangeable.
Pro Baseball Spread — activity by weekday and hour
Thursdays carry the most turnover, about $1.1M per day. Contracts listed to settle 03:00–03:59 UTC take 53 % of the turnover of the most traded contracts.
| Weekday (UTC) | Avg turnover / day | USD | Avg trades | Days |
|---|---|---|---|---|
| Monday | $404.3K | 8.3K | 3 | |
| Tuesday | $812.7K | 13.9K | 3 | |
| Wednesday | $555.7K | 13.3K | 3 | |
| Thursday | $1.1M | 19.3K | 4 | |
| Friday | $596.3K | 10.8K | 3 | |
| Saturday | $388.3K | 8.3K | 3 | |
| Sunday | $558.8K | 13.2K | 3 |
Kalshi Pro Baseball Spread — average USD turnover and trades per weekday over the captured days of the last 30, from our own daily statistics; weekdays without a captured day show —.
| Settles (UTC) | Turnover | USD | Share | Trades | Contracts |
|---|---|---|---|---|---|
| 00:00–00:59 | $2.8M | 10.6 % | 43,436 | 28 | |
| 01:00–01:59 | $1.3M | 5.1 % | 24,146 | 11 | |
| 02:00–02:59 | $279.8K | 1.1 % | 6,592 | 12 | |
| 03:00–03:59 | $14.0M | 52.8 % | 241,006 | 180 | |
| 04:00–04:59 | $1.4M | 5.3 % | 32,448 | 14 | |
| 05:00–05:59 | $3.9M | 14.9 % | 59,331 | 15 | |
| 19:00–19:59 | $301.8K | 1.1 % | 6,434 | 3 | |
| 20:00–20:59 | $233.9K | 0.9 % | 5,073 | 4 | |
| 21:00–21:59 | $242.3K | 0.9 % | 4,741 | 1 | |
| 23:00–23:59 | $2.0M | 7.4 % | 30,803 | 13 |
Kalshi Pro Baseball Spread — USD turnover and trades of the most traded contracts per day, grouped by the UTC hour in which the contract is listed to settle (the venue's close time), over the newest 30 captured days; from our tick archive.
Pro Baseball Spread — last 30 days in the archive
Files, size, contracts traded, trades, USD turnover, buy share, quoted spread, top-of-book depth and order-book updates per UTC day, from the recorded tick data.
| UTC day | Files | Size | Traded | Trades | Turnover | Buy share | Avg spread | Top-1 depth | L2 updates | Notes | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-10-29 | 8 | 29.0 MB | 8 | 18,621 | $1.1M | 54 % | 3.08 ¢ | $18.2K | 1.1M | Buy day → | |
| 2026-10-28 | 12 | 36.3 MB | 12 | 22,097 | $620.8K | 68 % | 1.39 ¢ | $38.5K | 1.4M | Buy day → | |
| 2026-10-27 | 21 | 41.5 MB | 21 | 15,488 | $1.1M | 57 % | 3.18 ¢ | $52.8K | 1.6M | Buy day → | |
| 2026-10-26 | 6 | 2.48 MB | 6 | 1,946 | $152.8K | 81 % | 1.11 ¢ | $64.5K | 83.2K | Buy day → | |
| 2026-10-25 | 15 | 50.7 MB | 15 | 15,311 | $367.2K | 48 % | 1.51 ¢ | $3.3K | 2.0M | Buy day → | |
| 2026-10-24 | 13 | 34.2 MB | 13 | 21,732 | $1.0M | 52 % | 1.78 ¢ | $12.7K | 1.3M | Buy day → | |
| 2026-10-23 | 6 | 2.76 MB | 6 | 5,167 | $416.4K | 84 % | 1.01 ¢ | $103.6K | 86.9K | Buy day → | |
| 2026-10-22 | 6 | 1.08 MB | 6 | 347 | $54.3K | 98 % | 1.01 ¢ | $69.8K | 36.6K | Buy day → | |
| 2026-10-21 | 6 | 772 KB | 6 | 240 | $5.4K | 95 % | 1.04 ¢ | $17.8K | 23.8K | Buy day → | |
| 2026-10-20 | 14 | 33.8 MB | 14 | 10,090 | $538.5K | 48 % | 2.82 ¢ | $20.3K | 1.3M | Buy day → | |
| 2026-10-19 | 14 | 3.41 MB | 9 | 2,338 | $229.9K | 95 % | 1.17 ¢ | $63.1K | 70.5K | Buy day → | |
| 2026-10-18 | 16 | 87.8 MB | 16 | 16,710 | $939.7K | 51 % | 1.73 ¢ | $23.7K | 3.6M | Buy day → | |
| 2026-10-17 | 12 | 4.08 MB | 12 | 1,901 | $82.7K | 68 % | 1.29 ¢ | $27.8K | 148.2K | Buy day → | |
| 2026-10-16 | 15 | 42.2 MB | 15 | 14,731 | $584.5K | 57 % | 2.44 ¢ | $16.5K | 1.6M | Buy day → | |
| 2026-10-15 | 24 | 60.3 MB | 19 | 29,167 | $1.7M | 60 % | 1.70 ¢ | $35.4K | 2.3M | Buy day → | |
| 2026-10-14 | 20 | 34.1 MB | 20 | 17,552 | $1.0M | 64 % | 1.57 ¢ | $117.2K | 1.3M | Buy day → | |
| 2026-10-13 | 25 | 44.4 MB | 25 | 16,034 | $821.4K | 63 % | 2.25 ¢ | $42.7K | 1.7M | Buy day → | |
| 2026-10-12 | 18 | 72.0 MB | 18 | 20,548 | $830.3K | 68 % | 1.32 ¢ | $42.9K | 2.8M | Buy day → | |
| 2026-10-11 | 19 | 29.2 MB | 18 | 7,572 | $369.6K | 68 % | 1.21 ¢ | $34.2K | 1.1M | Buy day → | |
| 2026-10-10 | 12 | 2.51 MB | 11 | 1,412 | $65.8K | 84 % | 1.01 ¢ | $60.6K | 83.7K | Buy day → | |
| 2026-10-09 | 22 | 47.8 MB | 22 | 12,539 | $788.1K | 49 % | 2.29 ¢ | $13.8K | 1.9M | Buy day → | |
| 2026-10-08 | 24 | 77.8 MB | 24 | 29,203 | $1.4M | 52 % | 1.53 ¢ | $50.4K | 3.0M | Buy day → | |
| 2026-10-07 | 40 | 154 MB | 40 | 45,248 | $2.5M | 62 % | 1.45 ¢ | $44.7K | 5.9M | Buy day → | |
| 2026-10-06 | 42 | 70.9 MB | 39 | 21,434 | $1.2M | 56 % | 2.43 ¢ | $21.5K | 2.7M | Buy day → | |
| 2026-10-05 | 31 | 90.4 MB | 30 | 22,228 | $1.1M | 65 % | 1.42 ¢ | $25.1K | 3.5M | Buy day → | |
| 2026-10-04 | 44 | 88.8 MB | 36 | 20,835 | $1.1M | 73 % | 1.54 ¢ | $29.5K | 3.4M | Buy day → | |
| 2026-10-03 | 39 | 90.1 MB | 31 | 23,179 | $1.4M | 61 % | 2.00 ¢ | $73.3K | 3.5M | Buy day → | |
| 2026-10-02 | 34 | 49.0 MB | 34 | 10,183 | $637.1K | 58 % | 3.41 ¢ | $16.3K | 1.9M | Buy day → | |
| 2026-10-01 | 52 | 89.6 MB | 48 | 40,899 | $2.9M | 55 % | 1.92 ¢ | $36.1K | 3.2M | Buy day → | |
| 2026-09-30 | 62 | 212 MB | 60 | 71,107 | $4.4M | 56 % | 2.06 ¢ | $31.0K | 7.7M | Buy day → |
Traded = contracts with at least one trade that day. Buy share = taker-buy side of USD turnover. Avg spread = quoted bid-ask spread in contract price cents (0..1 = 100 ¢), weighted by turnover across the day’s contracts. Top-1 depth = mean of the best bid and best ask notional in USD, weighted by turnover. L2 updates = order-book level updates recorded across all contracts of the day. Days captured before the extended statistics show —.
Most traded Pro Baseball Spread contracts by day
The ten contracts with the most USD turnover per UTC day — open, high, low, close, VWAP and the outcome implied by the last print; the six previous days fold out below.
The 8 most traded Pro Baseball Spread contracts on 2026-10-29 — 2 closed Yes (≥ 0.97), 6 closed No (≤ 0.03): 18,621 trades, $1.1M USD turnover. The busiest contract was KXMLBSPREAD-26OCT282000MILTB-MIL2 with $456.3K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXMLBSPREAD-26OCT282000MILTB-MIL2 MIL vs TB · 2026-10-29 00:00 UTC · spread · MIL 2 | 2026-10-29 03:20 | 0.420 | 0.990 | 0.320 | 0.990 | 0.672 | Yes | 5,937 | $456.3K | 52 % | 2.45 ¢ | $24.5K | 249.0K | buy file → |
| KXMLBSPREAD-26OCT282000MILTB-MIL3 MIL vs TB · 2026-10-29 00:00 UTC · spread · MIL 3 | 2026-10-29 03:20 | 0.300 | 0.990 | 0.200 | 0.990 | 0.731 | Yes | 3,457 | $275.1K | 45 % | 5.33 ¢ | $29.5K | 185.5K | buy file → |
| KXMLBSPREAD-26OCT282000MILTB-MIL4 MIL vs TB · 2026-10-29 00:00 UTC · spread · MIL 4 | 2026-10-29 03:20 | 0.210 | 0.940 | 0.010 | 0.010 | 0.531 | No | 4,344 | $225.0K | 57 % | 1.85 ¢ | $4.0K | 220.2K | buy file → |
| KXMLBSPREAD-26OCT282000MILTB-MIL5 MIL vs TB · 2026-10-29 00:00 UTC · spread · MIL 5 | 2026-10-29 03:20 | 0.060 | 0.710 | 0.010 | 0.010 | 0.340 | No | 2,965 | $136.1K | 72 % | 3.01 ¢ | $1.7K | 100.0K | buy file → |
| KXMLBSPREAD-26OCT282000MILTB-TB2 MIL vs TB · 2026-10-29 00:00 UTC · spread · TB 2 | 2026-10-29 03:20 | 0.260 | 0.370 | 0.010 | 0.010 | 0.113 | No | 952 | $18.5K | 80 % | 1.52 ¢ | $1.2K | 142.3K | buy file → |
| KXMLBSPREAD-26OCT282000MILTB-MIL6 MIL vs TB · 2026-10-29 00:00 UTC · spread · MIL 6 | 2026-10-29 03:20 | 0.210 | 0.600 | 0.010 | 0.010 | 0.153 | No | 395 | $5.9K | 56 % | 2.09 ¢ | $778.6 | 28.2K | buy file → |
| KXMLBSPREAD-26OCT282000MILTB-TB3 MIL vs TB · 2026-10-29 00:00 UTC · spread · TB 3 | 2026-10-29 03:20 | 0.160 | 0.200 | 0.010 | 0.010 | 0.068 | No | 340 | $3.1K | 83 % | 1.23 ¢ | $420.9 | 104.1K | buy file → |
| KXMLBSPREAD-26OCT282000MILTB-TB4 MIL vs TB · 2026-10-29 00:00 UTC · spread · TB 4 | 2026-10-29 03:20 | 0.110 | 0.160 | 0.010 | 0.010 | 0.054 | No | 231 | $2.8K | 66 % | 1.25 ¢ | $345.8 | 74.0K | buy file → |
Prices quote 0..1 (probability of Yes). Open/high/low/close/VWAP are that UTC day’s trade prints per contract; the implied outcome reads the last print — ≥ 0.97 as Yes, ≤ 0.03 as No, anything between as still open — venues publish the official result. Buy share = taker-buy side of turnover; spread = the contract's turnover-weighted quoted bid-ask spread in cents, top-1 depth = mean best-bid/ask notional per side, L2 updates = order-book level updates recorded for the contract that day. “Settles” is the venue-listed close time of the contract where the venue publishes one (UTC).
2026-10-28 — 10 contracts, 21,483 trades, $610.8K turnover
The 10 most traded Pro Baseball Spread contracts on 2026-10-28 — 0 closed Yes (≥ 0.97), 5 closed No (≤ 0.03), 5 still open at the last print: 21,483 trades, $610.8K USD turnover. The busiest contract was KXMLBSPREAD-26OCT282000MILTB-MIL2 with $243.9K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXMLBSPREAD-26OCT282000MILTB-MIL2 MIL vs TB · 2026-10-29 00:00 UTC · spread · MIL 2 | 2026-10-29 03:20 | 0.400 | 0.450 | 0.400 | 0.420 | 0.428 | open | 2,577 | $243.9K | 67 % | 1.24 ¢ | $88.8K | 44.1K | buy file → |
| KXMLBSPREAD-26OCT272000MILTB-MIL2 MIL vs TB · 2026-10-28 00:00 UTC · spread · MIL 2 | 2026-10-28 04:37 | 0.400 | 0.600 | 0.010 | 0.010 | 0.210 | No | 8,706 | $190.0K | 61 % | 1.60 ¢ | $4.0K | 292.0K | buy file → |
| KXMLBSPREAD-26OCT272000MILTB-TB2 MIL vs TB · 2026-10-28 00:00 UTC · spread · TB 2 | 2026-10-28 04:37 | 0.290 | 0.530 | 0.010 | 0.010 | 0.101 | No | 5,329 | $62.7K | 68 % | 1.31 ¢ | $2.2K | 260.1K | buy file → |
| KXMLBSPREAD-26OCT282000MILTB-TB2 MIL vs TB · 2026-10-29 00:00 UTC · spread · TB 2 | 2026-10-29 03:20 | 0.250 | 0.280 | 0.230 | 0.260 | 0.256 | open | 338 | $30.5K | 83 % | 1.32 ¢ | $22.6K | 24.1K | buy file → |
| KXMLBSPREAD-26OCT272000MILTB-MIL3 MIL vs TB · 2026-10-28 00:00 UTC · spread · MIL 3 | 2026-10-28 04:37 | 0.280 | 0.470 | 0.010 | 0.010 | 0.138 | No | 2,070 | $23.8K | 70 % | 1.39 ¢ | $1.5K | 269.2K | buy file → |
| KXMLBSPREAD-26OCT282000MILTB-MIL3 MIL vs TB · 2026-10-29 00:00 UTC · spread · MIL 3 | 2026-10-29 03:20 | 0.320 | 0.320 | 0.290 | 0.300 | 0.304 | open | 331 | $18.7K | 96 % | 1.25 ¢ | $26.5K | 21.3K | buy file → |
| KXMLBSPREAD-26OCT272000MILTB-MIL4 MIL vs TB · 2026-10-28 00:00 UTC · spread · MIL 4 | 2026-10-28 04:37 | 0.220 | 0.340 | 0.010 | 0.010 | 0.098 | No | 1,096 | $13.9K | 66 % | 1.64 ¢ | $870.46 | 190.0K | buy file → |
| KXMLBSPREAD-26OCT282000MILTB-TB3 MIL vs TB · 2026-10-29 00:00 UTC · spread · TB 3 | 2026-10-29 03:20 | 0.180 | 0.190 | 0.150 | 0.160 | 0.168 | open | 127 | $10.3K | 82 % | 1.49 ¢ | $2.5K | 8.2K | buy file → |
| KXMLBSPREAD-26OCT282000MILTB-MIL4 MIL vs TB · 2026-10-29 00:00 UTC · spread · MIL 4 | 2026-10-29 03:20 | 0.220 | 0.240 | 0.190 | 0.210 | 0.210 | open | 238 | $9.1K | 82 % | 1.61 ¢ | $5.1K | 11.9K | buy file → |
| KXMLBSPREAD-26OCT272000MILTB-TB3 MIL vs TB · 2026-10-28 00:00 UTC · spread · TB 3 | 2026-10-28 04:37 | 0.210 | 0.350 | 0.010 | 0.010 | 0.092 | No | 671 | $7.8K | 58 % | 1.82 ¢ | $891.06 | 130.1K | buy file → |
2026-10-27 — 10 contracts, 11,553 trades, $950.4K turnover
The 10 most traded Pro Baseball Spread contracts on 2026-10-27 — 5 closed Yes (≥ 0.97), 2 closed No (≤ 0.03), 3 still open at the last print: 11,553 trades, $950.4K USD turnover. The busiest contract was KXMLBSPREAD-26OCT272000MILTB-MIL2 with $496.0K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXMLBSPREAD-26OCT272000MILTB-MIL2 MIL vs TB · 2026-10-28 00:00 UTC · spread · MIL 2 | 2026-10-28 04:37 | 0.410 | 0.430 | 0.380 | 0.400 | 0.395 | open | 3,098 | $496.0K | 48 % | 1.26 ¢ | $105.4K | 38.7K | buy file → |
| KXMLBSPREAD-26OCT262000MILTB-MIL2 MIL vs TB · 2026-10-27 00:00 UTC · spread · MIL 2 | 2026-10-27 03:21 | 0.340 | 0.990 | 0.290 | 0.990 | 0.618 | Yes | 1,990 | $94.0K | 51 % | 1.23 ¢ | $13.7K | 170.1K | buy file → |
| KXMLBSPREAD-26OCT262000MILTB-MIL10 MIL vs TB · 2026-10-27 00:00 UTC · spread · MIL 10 | 2026-10-27 03:21 | 0.610 | 0.990 | 0.010 | 0.010 | 0.576 | No | 1,542 | $62.4K | 69 % | 9.65 ¢ | $1.7K | 111.7K | buy file → |
| KXMLBSPREAD-26OCT272000MILTB-TB2 MIL vs TB · 2026-10-28 00:00 UTC · spread · TB 2 | 2026-10-28 04:37 | 0.330 | 0.330 | 0.260 | 0.290 | 0.298 | open | 478 | $50.3K | 97 % | 1.81 ¢ | $22.3K | 26.8K | buy file → |
| KXMLBSPREAD-26OCT262000MILTB-MIL11 MIL vs TB · 2026-10-27 00:00 UTC · spread · MIL 11 | 2026-10-27 03:21 | 0.400 | 0.910 | 0.010 | 0.010 | 0.329 | No | 2,026 | $50.3K | 68 % | 16.3 ¢ | $1.5K | 124.4K | buy file → |
| KXMLBSPREAD-26OCT262000MILTB-MIL9 MIL vs TB · 2026-10-27 00:00 UTC · spread · MIL 9 | 2026-10-27 03:21 | 0.700 | 0.990 | 0.550 | 0.990 | 0.844 | Yes | 507 | $47.7K | 60 % | 10.1 ¢ | $6.5K | 100.8K | buy file → |
| KXMLBSPREAD-26OCT272000MILTB-MIL4 MIL vs TB · 2026-10-28 00:00 UTC · spread · MIL 4 | 2026-10-28 04:37 | 0.830 | 0.830 | 0.200 | 0.220 | 0.215 | open | 562 | $45.8K | 88 % | 1.61 ¢ | $11.5K | 19.7K | buy file → |
| KXMLBSPREAD-26OCT262000MILTB-MIL3 MIL vs TB · 2026-10-27 00:00 UTC · spread · MIL 3 | 2026-10-27 03:21 | 0.240 | 0.990 | 0.170 | 0.990 | 0.596 | Yes | 868 | $44.0K | 45 % | 1.65 ¢ | $6.7K | 128.8K | buy file → |
| KXMLBSPREAD-26OCT262000MILTB-MIL8 MIL vs TB · 2026-10-27 00:00 UTC · spread · MIL 8 | 2026-10-27 03:21 | 0.820 | 0.990 | 0.620 | 0.990 | 0.907 | Yes | 218 | $31.3K | 70 % | 5.47 ¢ | $3.4K | 85.1K | buy file → |
| KXMLBSPREAD-26OCT262000MILTB-MIL7 MIL vs TB · 2026-10-27 00:00 UTC · spread · MIL 7 | 2026-10-27 03:21 | 0.740 | 0.990 | 0.700 | 0.990 | 0.907 | Yes | 264 | $28.5K | 53 % | 3.76 ¢ | $4.5K | 62.6K | buy file → |
2026-10-26 — 6 contracts, 1,946 trades, $152.8K turnover
The 6 most traded Pro Baseball Spread contracts on 2026-10-26 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 6 still open at the last print: 1,946 trades, $152.8K USD turnover. The busiest contract was KXMLBSPREAD-26OCT262000MILTB-TB2 with $92.2K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXMLBSPREAD-26OCT262000MILTB-TB2 MIL vs TB · 2026-10-27 00:00 UTC · spread · TB 2 | 2026-10-27 03:21 | 0.340 | 0.340 | 0.320 | 0.320 | 0.331 | open | 671 | $92.2K | 86 % | 1.09 ¢ | $75.5K | 15.4K | buy file → |
| KXMLBSPREAD-26OCT262000MILTB-MIL2 MIL vs TB · 2026-10-27 00:00 UTC · spread · MIL 2 | 2026-10-27 03:21 | 0.330 | 0.360 | 0.330 | 0.340 | 0.348 | open | 893 | $46.8K | 68 % | 1.14 ¢ | $59.1K | 18.6K | buy file → |
| KXMLBSPREAD-26OCT262000MILTB-MIL3 MIL vs TB · 2026-10-27 00:00 UTC · spread · MIL 3 | 2026-10-27 03:21 | 0.230 | 0.250 | 0.230 | 0.240 | 0.248 | open | 133 | $5.4K | 92 % | 1.00 ¢ | $9.5K | 18.4K | buy file → |
| KXMLBSPREAD-26OCT262000MILTB-MIL4 MIL vs TB · 2026-10-27 00:00 UTC · spread · MIL 4 | 2026-10-27 03:21 | 0.150 | 0.170 | 0.150 | 0.160 | 0.170 | open | 74 | $3.9K | 99 % | 1.22 ¢ | $3.1K | 7.1K | buy file → |
| KXMLBSPREAD-26OCT262000MILTB-TB3 MIL vs TB · 2026-10-27 00:00 UTC · spread · TB 3 | 2026-10-27 03:21 | 0.240 | 0.240 | 0.220 | 0.240 | 0.236 | open | 103 | $3.0K | 74 % | 1.12 ¢ | $16.7K | 15.7K | buy file → |
| KXMLBSPREAD-26OCT262000MILTB-TB4 MIL vs TB · 2026-10-27 00:00 UTC · spread · TB 4 | 2026-10-27 03:21 | 0.160 | 0.170 | 0.150 | 0.170 | 0.156 | open | 72 | $1.4K | 56 % | 1.37 ¢ | $5.1K | 7.9K | buy file → |
2026-10-25 — 10 contracts, 15,206 trades, $366.1K turnover
The 10 most traded Pro Baseball Spread contracts on 2026-10-25 — 0 closed Yes (≥ 0.97), 8 closed No (≤ 0.03), 2 still open at the last print: 15,206 trades, $366.1K USD turnover. The busiest contract was KXMLBSPREAD-26OCT242000TBMIL-TB2 with $124.3K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXMLBSPREAD-26OCT242000TBMIL-TB2 TB vs MIL · 2026-10-25 00:00 UTC · spread · TB 2 | 2026-10-25 03:55 | 0.340 | 0.800 | 0.010 | 0.010 | 0.363 | No | 4,268 | $124.3K | 37 % | 1.36 ¢ | $4.8K | 270.9K | buy file → |
| KXMLBSPREAD-26OCT242000TBMIL-MIL2 TB vs MIL · 2026-10-25 00:00 UTC · spread · MIL 2 | 2026-10-25 03:55 | 0.330 | 0.690 | 0.010 | 0.010 | 0.223 | No | 6,065 | $90.6K | 63 % | 1.67 ¢ | $3.5K | 391.1K | buy file → |
| KXMLBSPREAD-26OCT242000TBMIL-TB3 TB vs MIL · 2026-10-25 00:00 UTC · spread · TB 3 | 2026-10-25 03:55 | 0.230 | 0.670 | 0.010 | 0.010 | 0.363 | No | 1,615 | $84.5K | 63 % | 1.46 ¢ | $2.6K | 215.5K | buy file → |
| KXMLBSPREAD-26OCT242000TBMIL-TB4 TB vs MIL · 2026-10-25 00:00 UTC · spread · TB 4 | 2026-10-25 03:55 | 0.160 | 0.560 | 0.010 | 0.010 | 0.311 | No | 1,471 | $46.8K | 14 % | 1.56 ¢ | $1.3K | 196.9K | buy file → |
| KXMLBSPREAD-26OCT242000TBMIL-MIL3 TB vs MIL · 2026-10-25 00:00 UTC · spread · MIL 3 | 2026-10-25 03:55 | 0.210 | 0.790 | 0.010 | 0.010 | 0.110 | No | 1,145 | $12.6K | 66 % | 1.66 ¢ | $867.21 | 212.2K | buy file → |
| KXMLBSPREAD-26OCT242000TBMIL-MIL4 TB vs MIL · 2026-10-25 00:00 UTC · spread · MIL 4 | 2026-10-25 03:55 | 0.160 | 0.230 | 0.010 | 0.010 | 0.064 | No | 354 | $2.5K | 78 % | 1.97 ¢ | $279.09 | 157.5K | buy file → |
| KXMLBSPREAD-26OCT242000TBMIL-TB5 TB vs MIL · 2026-10-25 00:00 UTC · spread · TB 5 | 2026-10-25 03:55 | 0.180 | 0.280 | 0.010 | 0.010 | 0.096 | No | 129 | $1.5K | 17 % | 2.70 ¢ | $490.98 | 167.7K | buy file → |
| KXMLBSPREAD-26OCT262000MILTB-MIL3 MIL vs TB · 2026-10-27 00:00 UTC · spread · MIL 3 | 2026-10-27 03:21 | 0.240 | 0.260 | 0.230 | 0.230 | 0.234 | open | 12 | $1.3K | 9 % | 1.73 ¢ | $1.1K | 13.3K | buy file → |
| KXMLBSPREAD-26OCT242000TBMIL-TB6 TB vs MIL · 2026-10-25 00:00 UTC · spread · TB 6 | 2026-10-25 03:55 | 0.200 | 0.220 | 0.010 | 0.010 | 0.096 | No | 86 | $1.1K | 25 % | 2.70 ¢ | $308.71 | 169.0K | buy file → |
| KXMLBSPREAD-26OCT262000MILTB-MIL2 MIL vs TB · 2026-10-27 00:00 UTC · spread · MIL 2 | 2026-10-27 03:21 | 0.340 | 0.350 | 0.330 | 0.330 | 0.348 | open | 61 | $906.36 | 87 % | 1.84 ¢ | $18.7K | 6.3K | buy file → |
2026-10-24 — 10 contracts, 21,444 trades, $1.0M turnover
The 10 most traded Pro Baseball Spread contracts on 2026-10-24 — 0 closed Yes (≥ 0.97), 6 closed No (≤ 0.03), 4 still open at the last print: 21,444 trades, $1.0M USD turnover. The busiest contract was KXMLBSPREAD-26OCT232000TBMIL-MIL2 with $606.5K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXMLBSPREAD-26OCT232000TBMIL-MIL2 TB vs MIL · 2026-10-24 00:00 UTC · spread · MIL 2 | 2026-10-24 03:36 | 0.430 | 0.990 | 0.010 | 0.010 | 0.547 | No | 11,256 | $606.5K | 44 % | 1.93 ¢ | $8.3K | 343.5K | buy file → |
| KXMLBSPREAD-26OCT232000TBMIL-MIL3 TB vs MIL · 2026-10-24 00:00 UTC · spread · MIL 3 | 2026-10-24 03:36 | 0.310 | 0.680 | 0.010 | 0.010 | 0.217 | No | 5,258 | $169.4K | 48 % | 1.51 ¢ | $3.3K | 232.3K | buy file → |
| KXMLBSPREAD-26OCT242000TBMIL-TB2 TB vs MIL · 2026-10-25 00:00 UTC · spread · TB 2 | 2026-10-25 03:55 | 0.310 | 0.360 | 0.310 | 0.340 | 0.339 | open | 752 | $106.2K | 91 % | 1.51 ¢ | $41.8K | 14.4K | buy file → |
| KXMLBSPREAD-26OCT242000TBMIL-MIL2 TB vs MIL · 2026-10-25 00:00 UTC · spread · MIL 2 | 2026-10-25 03:55 | 0.340 | 0.360 | 0.310 | 0.330 | 0.328 | open | 1,169 | $76.6K | 71 % | 1.52 ¢ | $34.8K | 19.0K | buy file → |
| KXMLBSPREAD-26OCT232000TBMIL-MIL4 TB vs MIL · 2026-10-24 00:00 UTC · spread · MIL 4 | 2026-10-24 03:36 | 0.220 | 0.590 | 0.010 | 0.010 | 0.220 | No | 1,242 | $28.0K | 56 % | 1.67 ¢ | $1.7K | 171.3K | buy file → |
| KXMLBSPREAD-26OCT232000TBMIL-TB2 TB vs MIL · 2026-10-24 00:00 UTC · spread · TB 2 | 2026-10-24 03:36 | 0.240 | 0.350 | 0.010 | 0.010 | 0.068 | No | 874 | $8.7K | 65 % | 1.86 ¢ | $1.3K | 142.6K | buy file → |
| KXMLBSPREAD-26OCT242000TBMIL-MIL3 TB vs MIL · 2026-10-25 00:00 UTC · spread · MIL 3 | 2026-10-25 03:55 | 0.240 | 0.240 | 0.210 | 0.210 | 0.228 | open | 115 | $6.3K | 82 % | 1.82 ¢ | $14.6K | 17.7K | buy file → |
| KXMLBSPREAD-26OCT242000TBMIL-TB3 TB vs MIL · 2026-10-25 00:00 UTC · spread · TB 3 | 2026-10-25 03:55 | 0.230 | 0.240 | 0.210 | 0.230 | 0.237 | open | 116 | $4.0K | 77 % | 1.68 ¢ | $5.0K | 15.7K | buy file → |
| KXMLBSPREAD-26OCT232000TBMIL-TB3 TB vs MIL · 2026-10-24 00:00 UTC · spread · TB 3 | 2026-10-24 03:36 | 0.170 | 0.250 | 0.010 | 0.010 | 0.050 | No | 350 | $3.2K | 44 % | 1.98 ¢ | $381.62 | 132.2K | buy file → |
| KXMLBSPREAD-26OCT232000TBMIL-MIL5 TB vs MIL · 2026-10-24 00:00 UTC · spread · MIL 5 | 2026-10-24 03:36 | 0.320 | 0.370 | 0.010 | 0.010 | 0.095 | No | 312 | $2.7K | 91 % | 4.87 ¢ | $565.95 | 95.8K | buy file → |
2026-10-23 — 6 contracts, 5,167 trades, $416.4K turnover
The 6 most traded Pro Baseball Spread contracts on 2026-10-23 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 6 still open at the last print: 5,167 trades, $416.4K USD turnover. The busiest contract was KXMLBSPREAD-26OCT232000TBMIL-MIL2 with $370.2K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXMLBSPREAD-26OCT232000TBMIL-MIL2 TB vs MIL · 2026-10-24 00:00 UTC · spread · MIL 2 | 2026-10-24 03:36 | 0.420 | 0.430 | 0.400 | 0.430 | 0.428 | open | 4,143 | $370.2K | 84 % | 1.00 ¢ | $113.9K | 29.4K | buy file → |
| KXMLBSPREAD-26OCT232000TBMIL-MIL3 TB vs MIL · 2026-10-24 00:00 UTC · spread · MIL 3 | 2026-10-24 03:36 | 0.290 | 0.310 | 0.280 | 0.310 | 0.301 | open | 374 | $18.1K | 88 % | 1.03 ¢ | $28.6K | 15.2K | buy file → |
| KXMLBSPREAD-26OCT232000TBMIL-TB2 TB vs MIL · 2026-10-24 00:00 UTC · spread · TB 2 | 2026-10-24 03:36 | 0.240 | 0.260 | 0.240 | 0.240 | 0.250 | open | 256 | $17.1K | 95 % | 1.02 ¢ | $24.1K | 13.3K | buy file → |
| KXMLBSPREAD-26OCT232000TBMIL-MIL4 TB vs MIL · 2026-10-24 00:00 UTC · spread · MIL 4 | 2026-10-24 03:36 | 0.210 | 0.220 | 0.200 | 0.220 | 0.217 | open | 201 | $5.3K | 89 % | 1.00 ¢ | $3.8K | 7.9K | buy file → |
| KXMLBSPREAD-26OCT232000TBMIL-TB3 TB vs MIL · 2026-10-24 00:00 UTC · spread · TB 3 | 2026-10-24 03:36 | 0.170 | 0.170 | 0.150 | 0.170 | 0.168 | open | 106 | $3.0K | 87 % | 1.13 ¢ | $882.36 | 9.4K | buy file → |
| KXMLBSPREAD-26OCT232000TBMIL-TB4 TB vs MIL · 2026-10-24 00:00 UTC · spread · TB 4 | 2026-10-24 03:36 | 0.100 | 0.110 | 0.080 | 0.110 | 0.096 | open | 87 | $2.6K | 65 % | 1.02 ¢ | $586.54 | 11.7K | buy file → |
MLB on Kalshi — market types across the series
Across 72 MLB series on Kalshi, 883,363 contracts have been listed as of 2026-11-06: player & team props 601,750 · total / over-under 90,394 · spread / handicap 30,874 · moneyline / winner 21,002 and others. Counted from every contract file of the family, not from the traded top-10.
| Market type | Contracts listed (all time) | Listed last 30 days | Share |
|---|---|---|---|
| player & team props | 601,750 | 5,393 | 68 % |
| total / over-under | 90,394 | 1,129 | 10 % |
| spread / handicap | 30,874 | 266 | 3 % |
| moneyline / winner | 21,002 | 881 | 2 % |
| period markets | 14,547 | 204 | 2 % |
| strike ladder | 212 | 0 | 0 % |
| other | 124,584 | 2,590 | 14 % |
| Total | 883,363 | 10,463 | 100 % |
Kalshi MLB series— market type read from each contract's venue identifier (ticker suffix on Kalshi, slug suffix on Polymarket, market description on predict.fun and OG.com), counted over every contract listed in the family as of 2026-11-06; “listed last 30 days” counts contracts whose venue settlement time falls in that window. Every one of them is in the day bundle of its day.
How a Pro Baseball Spread contract trades
On Kalshi, a Pro Baseball Spread contract trades for about 22 h from open to close, is listed roughly 10 min before it opens, and quotes in 1 ¢ price steps (0..1). Measured on the 8 contracts captured on 2026-10-29.
Try a Pro Baseball Spread contract file for free
The busiest contract of a settled day, byte-identical to the files in the paid bundle — download the native tick file, a CSV/Parquet export, or replay its order book in the browser.
KXMLBSPREAD-26OCT272000MILTB-MIL2 minute by minute — 2026-10-27
One-minute open/high/low/close, trades, USD turnover, quoted spread and top-of-book depth of the sample contract — the same 1-minute statistics every instrument’s analytics page offers.
KXMLBSPREAD-26OCT272000MILTB-MIL2 traded in 784 of the day’s minutes (03:31–23:59 UTC): 3,098 trades, $496.0K turnover, opening at 0.410, ranging 0.380–0.430 and closing at 0.400.
| Minute (UTC) | Open | High | Low | Close | Trades | Turnover | Spread | Top-1 bid / ask |
|---|---|---|---|---|---|---|---|---|
| 03:31 | 0.410 | 0.410 | 0.410 | 0.410 | 1 | $0.03 | 3.86 ¢ | $287.37 / $376.39 |
| 03:32 | 0.410 | 0.410 | 0.410 | 0.410 | 2 | $22.07 | 3.94 ¢ | $139.54 / $358.6 |
| 03:33 | 0.410 | 0.410 | 0.410 | 0.410 | 2 | $13.81 | 3.61 ¢ | $731.75 / $258.16 |
| 03:34 | 0.410 | 0.420 | 0.380 | 0.380 | 2 | $26.8 | 4.41 ¢ | $930.99 / $524.57 |
| 03:35 | 0.380 | 0.420 | 0.420 | 0.420 | 4 | $105.26 | 4.03 ¢ | $1.2K / $577.56 |
| 03:36 | 0.420 | 0.420 | 0.420 | 0.420 | 1 | $4.9 | 4.00 ¢ | $1.2K / $558.61 |
| 03:37 | 0.420 | 0.420 | 0.420 | 0.420 | 3 | $26.72 | 3.78 ¢ | $1.2K / $532.51 |
| 03:39 | 0.420 | 0.420 | 0.420 | 0.420 | 2 | $58.8 | 3.70 ¢ | $1.3K / $529.57 |
| 03:40 | 0.420 | 0.380 | 0.380 | 0.380 | 2 | $2.97 | 3.20 ¢ | $885.69 / $503.76 |
| 03:41 | 0.380 | 0.420 | 0.420 | 0.420 | 2 | $122.51 | 3.10 ¢ | $1.3K / $464.71 |
| 03:42 | 0.420 | 0.420 | 0.420 | 0.420 | 1 | $4.9 | 4.00 ¢ | $1.7K / $381.63 |
| 03:43 | 0.420 | 0.420 | 0.410 | 0.420 | 2 | $98.01 | 3.25 ¢ | $1.7K / $263.38 |
| 03:44 | 0.420 | 0.420 | 0.420 | 0.420 | 2 | $20.09 | 2.62 ¢ | $1.2K / $292.95 |
| 03:46 | 0.420 | 0.420 | 0.400 | 0.400 | 6 | $205.82 | 2.00 ¢ | $179.55 / $215.61 |
| 03:47 | 0.400 | 0.420 | 0.420 | 0.420 | 1 | $49.01 | 2.00 ¢ | $150.1 / $174.98 |
| 03:49 | 0.420 | 0.430 | 0.420 | 0.430 | 6 | $161.22 | 2.12 ¢ | $131.03 / $263.23 |
| 03:51 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $9.81 | 3.00 ¢ | $0.41 / $1.7K |
| 03:52 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $98.04 | 3.00 ¢ | $33.19 / $3.7K |
| 03:54 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $49.02 | 3.00 ¢ | $60 / $3.6K |
| 03:59 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $131.38 | 3.00 ¢ | $60 / $5.2K |
| 04:03 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $98.04 | 3.00 ¢ | $60.01 / $5.0K |
| 04:06 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $9.81 | 3.00 ¢ | $64.01 / $4.8K |
| 04:07 | 0.430 | 0.420 | 0.420 | 0.420 | 1 | $0.98 | 2.48 ¢ | $123.54 / $5.2K |
| 04:08 | 0.420 | 0.420 | 0.420 | 0.420 | 2 | $1.0K | 2.00 ¢ | $907.93 / $5.0K |
| 04:10 | 0.420 | 0.420 | 0.420 | 0.420 | 2 | $105.96 | 2.00 ¢ | $180.01 / $4.3K |
| 04:11 | 0.420 | 0.430 | 0.430 | 0.430 | 2 | $11.78 | 2.87 ¢ | $80.02 / $3.8K |
| 04:12 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $4.91 | 3.00 ¢ | $64.65 / $4.1K |
| 04:13 | 0.430 | 0.430 | 0.430 | 0.430 | 3 | $220.6 | 3.00 ¢ | $2.6K / $1.1K |
| 04:14 | 0.430 | 0.430 | 0.430 | 0.430 | 4 | $98.04 | 3.00 ¢ | $3.4K / $231.82 |
| 04:15 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $20.06 | 3.00 ¢ | $3.4K / $163.78 |
| 04:18 | 0.430 | 0.430 | 0.410 | 0.410 | 5 | $74.76 | 2.82 ¢ | $2.8K / $1.2K |
| 04:22 | 0.410 | 0.430 | 0.430 | 0.430 | 2 | $19.59 | 2.00 ¢ | $177.94 / $14.0K |
| 04:25 | 0.430 | 0.430 | 0.430 | 0.430 | 5 | $117.65 | 2.00 ¢ | $177.94 / $13.2K |
| 04:26 | 0.430 | 0.430 | 0.430 | 0.430 | 2 | $100.34 | 1.82 ¢ | $177.87 / $10.8K |
| 04:27 | 0.430 | 0.430 | 0.420 | 0.430 | 2 | $213.73 | 1.55 ¢ | $277.45 / $7.4K |
| 04:28 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $49.02 | 2.00 ¢ | $358.34 / $13.2K |
| 04:30 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $47.78 | 2.00 ¢ | $358.34 / $13.0K |
| 04:33 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $147.07 | 2.00 ¢ | $358.34 / $13.8K |
| 04:34 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $1.48 | 2.00 ¢ | $358.34 / $18.3K |
| 04:35 | 0.430 | 0.430 | 0.430 | 0.430 | 3 | $158.6 | 2.00 ¢ | $358.34 / $18.3K |
| 04:36 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $9.81 | 2.00 ¢ | $358.34 / $18.2K |
| 04:37 | 0.430 | 0.430 | 0.430 | 0.430 | 2 | $10.94 | 2.00 ¢ | $358.34 / $15.9K |
| 04:38 | 0.430 | 0.420 | 0.420 | 0.420 | 3 | $87.01 | 1.23 ¢ | $358.03 / $3.4K |
| 04:39 | 0.420 | 0.420 | 0.420 | 0.420 | 6 | $41.1 | 1.13 ¢ | $357.98 / $2.4K |
| 04:40 | 0.420 | 0.430 | 0.430 | 0.430 | 4 | $136.78 | 2.00 ¢ | $358.34 / $17.5K |
| 04:42 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $21.57 | 2.00 ¢ | $358.35 / $18.1K |
| 04:44 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $276.29 | 2.00 ¢ | $358.35 / $17.8K |
| 04:45 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $4.91 | 2.00 ¢ | $358.35 / $16.0K |
| 04:46 | 0.430 | 0.430 | 0.430 | 0.430 | 2 | $42.83 | 2.00 ¢ | $358.34 / $15.1K |
| 04:47 | 0.430 | 0.430 | 0.430 | 0.430 | 3 | $161.17 | 2.00 ¢ | $358.34 / $15.6K |
| 04:48 | 0.430 | 0.430 | 0.430 | 0.430 | 2 | $36.15 | 2.00 ¢ | $358.34 / $15.3K |
| 04:52 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $3.44 | 2.00 ¢ | $358.34 / $15.2K |
| 04:54 | 0.430 | 0.430 | 0.430 | 0.430 | 2 | $62.96 | 1.90 ¢ | $358.31 / $12.0K |
| 04:55 | 0.430 | 0.420 | 0.420 | 0.420 | 1 | $4.9 | 1.00 ¢ | $356.81 / $160.59 |
| 04:56 | 0.420 | 0.420 | 0.420 | 0.420 | 1 | $9.8 | 1.00 ¢ | $357.93 / $158.67 |
| 04:57 | 0.420 | 0.420 | 0.420 | 0.420 | 1 | $4.9 | 1.00 ¢ | $357.93 / $147.92 |
| 04:58 | 0.420 | 0.430 | 0.420 | 0.430 | 3 | $196.03 | 1.97 ¢ | $358.32 / $18.4K |
| 04:59 | 0.430 | 0.430 | 0.430 | 0.430 | 4 | $345.11 | 2.00 ¢ | $358.34 / $18.9K |
| 05:03 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $4.3 | 2.00 ¢ | $358.34 / $13.0K |
| 05:04 | 0.430 | 0.430 | 0.430 | 0.430 | 2 | $88.58 | 2.00 ¢ | $358.93 / $12.9K |
| 05:05 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $18.49 | 2.00 ¢ | $359.98 / $12.8K |
| 05:07 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $215 | 2.00 ¢ | $359.98 / $12.8K |
| 05:09 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $20.64 | 2.00 ¢ | $359.98 / $12.6K |
| 05:14 | 0.430 | 0.420 | 0.420 | 0.420 | 1 | $9.24 | 1.00 ¢ | $359.57 / $160.04 |
| 05:15 | 0.420 | 0.420 | 0.420 | 0.420 | 1 | $4.9 | 1.00 ¢ | $359.57 / $151.19 |
| 05:16 | 0.420 | 0.420 | 0.420 | 0.420 | 1 | $4.9 | 1.00 ¢ | $359.57 / $147.4 |
| 05:18 | 0.420 | 0.420 | 0.420 | 0.420 | 1 | $19.61 | 1.00 ¢ | $359.57 / $140.76 |
| 05:21 | 0.420 | 0.420 | 0.420 | 0.420 | 2 | $24.65 | 1.00 ¢ | $359.57 / $118.63 |
| 05:22 | 0.420 | 0.420 | 0.420 | 0.420 | 1 | $2.94 | 1.00 ¢ | $357.94 / $100.32 |
| 05:27 | 0.420 | 0.420 | 0.420 | 0.420 | 1 | $23.1 | 1.00 ¢ | $20.4K / $38.93 |
| 05:31 | 0.420 | 0.420 | 0.420 | 0.420 | 2 | $36.69 | 1.00 ¢ | $2.4K / $21.4K |
| 05:33 | 0.420 | 0.430 | 0.430 | 0.430 | 1 | $23.22 | 1.00 ¢ | $915.42 / $23.2K |
| 05:36 | 0.430 | 0.430 | 0.430 | 0.430 | 2 | $5.89 | 1.00 ¢ | $915.42 / $23.2K |
| 05:37 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $3.93 | 1.00 ¢ | $915.42 / $23.2K |
| 05:41 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $6.45 | 1.00 ¢ | $730.62 / $25.5K |
| 05:43 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $0.99 | 1.00 ¢ | $730.52 / $25.5K |
| 05:49 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $231.39 | 1.00 ¢ | $730.62 / $25.4K |
| 05:52 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $12.73 | 1.00 ¢ | $654.18 / $25.4K |
| 05:53 | 0.430 | 0.420 | 0.420 | 0.420 | 1 | $3.57 | 1.00 ¢ | $653.62 / $25.3K |
| 05:54 | 0.420 | 0.430 | 0.430 | 0.430 | 1 | $14.71 | 1.00 ¢ | $650.62 / $25.3K |
| 05:56 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $5.16 | 1.00 ¢ | $650.51 / $25.3K |
| 05:57 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $49.02 | 1.00 ¢ | $650.51 / $25.4K |
| 05:59 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $148.71 | 1.00 ¢ | $650.54 / $25.2K |
| 06:00 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $1.97 | 1.00 ¢ | $650.62 / $25.2K |
| 06:06 | 0.430 | 0.430 | 0.430 | 0.430 | 2 | $159.19 | 1.00 ¢ | $650.62 / $25.2K |
| 06:09 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $14.71 | 1.00 ¢ | $650.59 / $25.5K |
| 06:10 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $18.49 | 1.00 ¢ | $650.51 / $25.8K |
| 06:12 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $5.89 | 1.00 ¢ | $650.52 / $25.1K |
| 06:14 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $18.49 | 1.00 ¢ | $650.62 / $25.2K |
| 06:19 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $24.51 | 1.00 ¢ | $650.62 / $25.1K |
| 06:20 | 0.430 | 0.420 | 0.420 | 0.420 | 1 | $7.14 | 1.00 ¢ | $649.61 / $25.1K |
| 06:21 | 0.420 | 0.430 | 0.430 | 0.430 | 2 | $90.91 | 1.00 ¢ | $643.48 / $25.1K |
| 06:25 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $9.81 | 1.00 ¢ | $643.37 / $25.0K |
| 06:27 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $8.35 | 1.00 ¢ | $643.42 / $25.0K |
| 06:28 | 0.430 | 0.430 | 0.420 | 0.420 | 3 | $96.57 | 1.00 ¢ | $643.48 / $24.9K |
| 06:47 | 0.420 | 0.430 | 0.430 | 0.430 | 1 | $4.3 | 1.00 ¢ | $713.9 / $18.5K |
| 06:48 | 0.430 | 0.420 | 0.420 | 0.420 | 1 | $12.43 | 1.00 ¢ | $709.43 / $18.4K |
| 06:50 | 0.420 | 0.430 | 0.430 | 0.430 | 1 | $4.3 | 1.00 ¢ | $707.88 / $18.4K |
| 06:58 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $4.91 | 1.00 ¢ | $707.88 / $12.0K |
| 07:00 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $4.91 | 1.00 ¢ | $651.08 / $12.0K |
| 07:03 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $49.02 | 1.00 ¢ | $631.02 / $12.1K |
| 07:05 | 0.430 | 0.430 | 0.430 | 0.430 | 2 | $98.47 | 1.00 ¢ | $631.02 / $12.1K |
| 07:09 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $2.94 | 1.00 ¢ | $630.92 / $11.9K |
| 07:12 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $4.89 | 1.00 ¢ | $631.02 / $11.9K |
| 07:13 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $24.51 | 1.00 ¢ | $631.02 / $11.9K |
| 07:19 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $24.51 | 1.00 ¢ | $631.02 / $11.9K |
| 07:21 | 0.430 | 0.420 | 0.420 | 0.420 | 1 | $217.25 | 1.00 ¢ | $513.32 / $11.9K |
| 07:22 | 0.420 | 0.430 | 0.430 | 0.430 | 1 | $9.81 | 1.00 ¢ | $413.68 / $11.9K |
| 07:23 | 0.430 | 0.430 | 0.420 | 0.430 | 2 | $508.06 | 1.00 ¢ | $402.86 / $11.7K |
| 07:27 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $49.02 | 1.00 ¢ | $395.94 / $11.3K |
| 07:33 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $10.42 | 1.00 ¢ | $395.94 / $11.3K |
| 07:34 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $0.86 | 1.00 ¢ | $395.94 / $11.3K |
| 07:37 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $4.91 | 1.00 ¢ | $395.84 / $11.3K |
| 07:39 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $19.61 | 1.00 ¢ | $395.84 / $11.3K |
| 07:44 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $4.91 | 1.00 ¢ | $395.94 / $12.2K |
| 07:47 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $152.95 | 1.00 ¢ | $395.94 / $12.0K |
| 07:55 | 0.430 | 0.430 | 0.430 | 0.430 | 2 | $8.17 | 1.00 ¢ | $395.84 / $14.8K |
| 08:00 | 0.430 | 0.430 | 0.430 | 0.430 | 1 | $0.86 | 1.00 ¢ | $395.94 / $15.2K |
| 08:04 | 0.430 | 0.420 | 0.410 | 0.410 | 4 | $510.48 | 1.00 ¢ | $1.0K / $13.4K |
| 08:15 | 0.410 | 0.420 | 0.410 | 0.420 | 2 | $11.23 | 1.01 ¢ | $463.39 / $4.0K |
First 120 of 784 active minutes. 1-minute statistics computed from the recorded ticks; minutes without a trade are omitted. Spread in contract price cents; top-1 depth = resting notional at the best bid / best ask. Every minute of every day is in the free analytics; the raw ticks are in the sample file above.
Build a Pro Baseball Spread model on this data
Every settled Pro Baseball Spread contract is a labelled example: the winner, the line or the total that cleared is the label, and the day bundle holds each contract's full order-book path and trade tape, nanosecond-stamped, from the first quote days before the event to the last print — the features for that label. The statistics on this page cover the most traded contracts per day; the bundle holds every contract listed on Kalshi that day.
Split by season and match day, never at random — the contracts of one slate share injuries, weather and the same public money, and a random split leaks the slate's results into training; walk forward over game days and purge the days whose contracts were still open. The sports-model guide works the closing-line benchmark, the pre-game line path and that split through.
Purchased data is for your own use — backtesting, research, analytics and training your own models, in-house or in your own products; the trained models and derived data you build from it are yours. The raw files and tick streams themselves may not be redistributed, resold or published. The full terms are on the data license page.
Why buy Kalshi Pro Baseball Spread data here
Four things every page on this site is built on — and the reason the numbers above exist at all.
We record everything
The complete public feed of each venue as it was published: every Level-2 snapshot and update at the venue's full book depth, every trade with its aggressor side, every quote, funding, mark-price and liquidation event — for every instrument the venue lists, every UTC day since we added the venue. Nothing sampled, no top-N cut, no on-demand capture.
Institutional grade
Captured co-located at the venue with the exchange timestamp and our receive timestamp in integer nanoseconds, an event-id chain that makes any gap visible, and one normalized schema across 35+ venues — the same capture our own high-frequency trading engine and enterprise feeds run on.
€1 per instrument-day
Any instrument-day is €1, series-day bundles start at €1 — no subscription, no minimum order, no tiers to unlock. Credit packs lower the effective price and never expire, and free full-day samples from the major venues let you test first.
Self-service for everyone
Pick the days in the Data Shop, pay by card as a guest and download immediately — no sales call, no enterprise contract, no KYC. Coding agents buy the same files through the MCP server, and the free Agent Skill teaches them the format.
Agents: /llms.txt · MCP server /mcp · every page as markdown via Accept: text/markdown
Kalshi Pro Baseball Spread data — FAQ
What Kalshi Pro Baseball Spread data can I download?
Tick-by-tick trades and Level-2 order-book depth for every contract of the Pro Baseball Spread series on Kalshi (8 contract files on the latest day). One bundle = one UTC day of the whole series.
What is the Kalshi series ticker for Pro Baseball Spread?
KXMLBSPREAD — every contract of the series carries this prefix in its ticker (followed by the event date and strike). Files in a day bundle are named by the full contract ticker, so a bundle holds every KXMLBSPREAD-* contract listed that UTC day.
How far back does the Pro Baseball Spread data go?
Coverage runs March 2026 – present — 220 trading days in total. Pro Baseball Spread is a season market: days exist when MLB plays, and coverage continues when the league trades again.
What format are the Kalshi files in?
One zstd-compressed text file per contract per UTC day, in the same normalized schema as our crypto venues — see the market-data specification; free samples on the downloads page.
Can I get Kalshi Pro Baseball Spread data as CSV or Parquet?
Yes — trades export as gzipped CSV or Parquet at no extra cost, with integer microsecond UTC timestamps that load straight into pandas, polars or DuckDB. Kalshi records full order-book depth without a separate BBO stream, so book data ships in the native tick file — the free reader script converts it locally. See the formats overview.
How much does Kalshi Pro Baseball Spread historical data cost?
€1 per series-day bundle — every contract of the series for that day — no subscription, no minimum order; buy as a guest in the Data Shop and download immediately. Credit packs lower the effective price and never expire.
Do I need an account or a sales call?
No. Pick the Pro Baseball Spread series-days in the Data Shop, pay by card as a guest and download immediately — no subscription, no minimum order, no KYC, no enterprise contract, no sales call. Coding agents buy the same bundles through the MCP server.
How is the Kalshi Pro Baseball Spread data captured?
Co-located at the venue, message by message: every Level-2 update and every trade print carries the exchange timestamp and our receive timestamp in integer nanoseconds, an event-id chain makes any gap visible, and one normalized schema across 35+ venues means a parser written for Binance reads these files unchanged. It is the same capture our own high-frequency trading engine runs on — nothing sampled, no top-N cut.
How many Pro Baseball Spread contracts trade per day on Kalshi?
On average 14 Pro Baseball Spread contracts had at least one trade per UTC day over the last 22 captured days on Kalshi, with about 1.3M order-book level updates recorded per day. A day bundle contains every contract file of the series for that day.
How liquid are Kalshi Pro Baseball Spread contracts?
Over the last 22 captured days, the turnover-weighted quoted bid-ask spread was 1.94 ¢ (contracts quote 0..1 = 100 ¢), the mean best-bid/best-ask notional was about $41.0K per side, 59 % of USD turnover was taker-buy. These figures are computed from the recorded Level-2 order books and trade prints — the same data in the day bundles.
What was the most traded Pro Baseball Spread contract on 2026-10-29?
KXMLBSPREAD-26OCT282000MILTB-MIL2 (MIL vs TB · 2026-10-29 00:00 UTC · spread · MIL 2) — $456.3K USD turnover over 5,937 trades on Kalshi. The 8 most traded contracts of the series did 18,621 trades and $1.1M that UTC day. Open, high, low, close and VWAP per contract are listed on this page; the tick-level data is in the day bundle.
Did the favourite win in Pro Baseball Spread contracts?
Of 530 settled Pro Baseball Spread contracts that opened away from 50 ¢ among the day's most traded contracts between 2026-08-09 and 2026-10-29 on Kalshi, the side the opening price favoured finished in the money 52 % of the time; the largest group, 193 contracts opening at 30–40 ¢, closed Yes 50 % of the time. Outcomes are implied from each contract's last recorded print (≥ 0.97 / ≤ 0.03), not the venue's official settlement, and the opening price is the first print on the first day the contract ranked among the ten most traded of the series; the opening-price table on this page lists every 10 ¢ step, and the tick data behind it is in the day bundles.
What was the busiest Pro Baseball Spread trading day on Kalshi?
2026-07-25, with $7.7M of USD turnover over 100,823 trades across every Pro Baseball Spread contract of the day; the busiest full month was Aug 2026 at $123.3M. Since our statistics began on 2026-07-08 the series has recorded 4,961,970 trades and $331.0M over 114 captured days; the single biggest contract was KXMLBSPREAD-26AUG141420STLCHC-CHC2 (STL vs CHC · 2026-08-14 18:20 UTC · spread · CHC 2) on 2026-08-14 with $1.0M. Any of these days is a downloadable bundle.
When do Pro Baseball Spread contracts settle?
Contracts listed to settle between 03:00 and 03:59 UTC carried 53 % of the USD turnover of the most traded Pro Baseball Spread contracts per day over the newest 30 captured days on Kalshi. The hour-by-hour profile on this page shows the whole day; every contract file carries nanosecond exchange timestamps, so any finer profile can be computed from the bundle.
Which market types does Kalshi list for MLB?
Kalshi lists each market type as its own series — 72 MLB series with 883,363 contracts listed as of 2026-11-06: player & team props 601,750 · total / over-under 90,394 · spread / handicap 30,874 · moneyline / winner 21,002 · period markets 14,547. Pro Baseball Spread is one of them; a series-day bundle covers one series, so buy the same day across the sibling series you need in the shop.
Which weekday does Kalshi Pro Baseball Spread trade most?
Thursdays — about $1.1M of USD turnover per Thursday and 30 % of the series' turnover over the 22 captured days to 2026-10-29 on Kalshi, summed from every trade print of the series' contracts. The weekday profile on this page shows all seven days; the day bundles carry the full tape behind them.
How much of Pro Baseball Spread turnover trades on game day?
88 % — across 541 settled Pro Baseball Spread contracts between 2026-08-09 and 2026-10-29 on Kalshi, 88 % of their USD turnover printed on the UTC day the contract settled and 12 % on the days before, summed from every trade of the most traded contracts per day. The pre-event share is where line-movement features live; the day bundles hold both.
How long before an event do Pro Baseball Spread contracts trade?
A median of 1 captured trading day per contract, settlement day included — across 541 settled Pro Baseball Spread contracts to 2026-10-29 on Kalshi, counting the UTC days a contract ranked among the series' most traded. Buy those days as a range (/shop/bundles?bundle=kalshi-kxmlbspread&d=<from>..<to>) to get the whole pre-event path of each contract.