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. 187 trading days as day bundles, €1 per day, bought as a guest with instant download.
Pro Baseball Spread on Kalshi — activity
Trades and USD turnover summed over every contract of the series across 30 captured days to 2026-09-26, 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 — 278 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 — 187 trading days, 47.8 GB compressed in total. A day typically holds 226 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
4,339,332 trades and $297.2M of USD turnover over 81 captured days since 2026-07-08 — record day 2026-07-25 with $7.7M, biggest single contract KXMLBSPREAD-26AUG141420STLCHC-CHC2 (2026-08-14, $1.0M).
| Month | Days | Trades | Turnover (USD) | Avg / day | Contracts traded | L2 updates | vs previous month |
|---|---|---|---|---|---|---|---|
| Sep 2026 (month to date) | 26 | 1,315,476 | $82.7M | $3.2M | 5,003 | 382.7M | — |
| Aug 2026 | 31 | 1,636,521 | $123.3M | $4.0M | 4,247 | 242.9M | — |
| 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 — activity by weekday
Wednesdays carry the most turnover, about $5.3M per day.
| Weekday (UTC) | Avg turnover / day | USD | Avg trades | Days |
|---|---|---|---|---|
| Monday | $1.8M | 26.5K | 4 | |
| Tuesday | $2.7M | 40.4K | 4 | |
| Wednesday | $5.3M | 80.3K | 4 | |
| Thursday | $4.0M | 63.0K | 4 | |
| Friday | $2.3M | 34.0K | 5 | |
| Saturday | $3.3M | 51.4K | 5 | |
| Sunday | $3.5M | 54.6K | 4 |
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 —.
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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-09-26 | 278 | 627 MB | 234 | 55,024 | $3.4M | 59 % | 2.69 ¢ | $11.6K | 22.9M | Buy day → | |
| 2026-09-25 | 207 | 414 MB | 168 | 56,135 | $3.6M | 57 % | 3.18 ¢ | $10.0K | 15.2M | Buy day → | |
| 2026-09-24 | 271 | 717 MB | 203 | 80,108 | $4.5M | 59 % | 2.74 ¢ | $9.0K | 26.5M | Buy day → | |
| 2026-09-23 | 264 | 623 MB | 231 | 80,641 | $4.8M | 58 % | 2.80 ¢ | $10.5K | 22.8M | Buy day → | |
| 2026-09-22 | 174 | 244 MB | 135 | 28,160 | $2.2M | 65 % | 2.37 ¢ | $10.7K | 8.8M | Buy day → | |
| 2026-09-21 | 131 | 93.5 MB | 60 | 8,461 | $541.1K | 53 % | 4.53 ¢ | $8.4K | 3.4M | Buy day → | |
| 2026-09-20 | 237 | 646 MB | 220 | 44,044 | $2.5M | 64 % | 3.61 ¢ | $9.3K | 23.9M | Buy day → | |
| 2026-09-19 | 290 | 576 MB | 240 | 59,003 | $3.2M | 61 % | 2.39 ¢ | $16.1K | 21.1M | Buy day → | |
| 2026-09-18 | 206 | 239 MB | 140 | 25,679 | $1.2M | 64 % | 1.77 ¢ | $9.3K | 7.0M | Buy day → | |
| 2026-09-17 | 234 | 482 MB | 185 | 60,209 | $3.9M | 60 % | 2.81 ¢ | $7.7K | 13.8M | Buy day → | |
| 2026-09-16 | 240 | 505 MB | 231 | 84,310 | $4.6M | 57 % | 2.18 ¢ | $9.9K | 17.2M | Buy day → | |
| 2026-09-15 | 258 | 346 MB | 229 | 48,287 | $3.1M | 61 % | 2.09 ¢ | $14.5K | 12.4M | Buy day → | |
| 2026-09-14 | 145 | 120 MB | 120 | 13,495 | $985.7K | 73 % | 2.08 ¢ | $10.7K | 4.4M | Buy day → | |
| 2026-09-13 | 243 | 461 MB | 208 | 43,839 | $2.5M | 59 % | 4.16 ¢ | $5.5K | 17.1M | Buy day → | |
| 2026-09-12 | 302 | 508 MB | 251 | 36,736 | $1.8M | 60 % | 2.53 ¢ | $6.5K | 11.0M | Buy day → | |
| 2026-09-11 | 185 | 178 MB | 143 | 23,128 | $1.8M | 64 % | 2.13 ¢ | $11.4K | 4.9M | Buy day → | |
| 2026-09-10 | 213 | 376 MB | 177 | 58,011 | $3.9M | 62 % | 2.97 ¢ | $11.1K | 13.8M | Buy day → | |
| 2026-09-09 | 284 | 641 MB | 258 | 77,538 | $4.1M | 57 % | 2.51 ¢ | $11.0K | 23.6M | Buy day → | |
| 2026-09-08 | 194 | 237 MB | 140 | 38,753 | $2.1M | 61 % | 1.62 ¢ | $10.6K | 8.8M | Buy day → | |
| 2026-09-07 | 177 | 318 MB | 120 | 58,585 | $3.2M | 57 % | 2.41 ¢ | $15.5K | 11.9M | Buy day → | |
| 2026-09-06 | 277 | 598 MB | 241 | 69,067 | $4.0M | 56 % | 2.76 ¢ | $7.3K | 22.1M | Buy day → | |
| 2026-09-05 | 324 | 457 MB | 240 | 50,832 | $3.3M | 60 % | 2.52 ¢ | $11.5K | 16.5M | Buy day → | |
| 2026-09-04 | 224 | 292 MB | 161 | 36,612 | $2.5M | 73 % | 1.64 ¢ | $13.7K | 10.7M | Buy day → | |
| 2026-09-03 | 215 | 333 MB | 153 | 53,591 | $3.9M | 60 % | 2.34 ¢ | $11.9K | 12.0M | Buy day → | |
| 2026-09-02 | 301 | 509 MB | 283 | 78,831 | $7.6M | 63 % | 2.90 ¢ | $10.8K | 18.5M | Buy day → | |
| 2026-09-01 | 257 | 335 MB | 232 | 46,397 | $3.4M | 64 % | 2.92 ¢ | $7.8K | 12.2M | Buy day → | |
| 2026-08-31 | 161 | 113 MB | 100 | 25,324 | $2.6M | 61 % | 1.86 ¢ | $7.8K | 4.0M | Buy day → | |
| 2026-08-30 | 227 | 453 MB | 178 | 61,284 | $4.9M | 61 % | 2.40 ¢ | $11.0K | 16.8M | Buy day → | |
| 2026-08-29 | 321 | 507 MB | 280 | 55,581 | $4.6M | 63 % | 2.77 ¢ | $7.6K | 18.0M | Buy day → | |
| 2026-08-28 | 197 | 197 MB | 166 | 28,318 | $2.5M | 62 % | 2.11 ¢ | $10.7K | 6.0M | 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 10 most traded Pro Baseball Spread contracts on 2026-09-26 — 5 closed Yes (≥ 0.97), 4 closed No (≤ 0.03), 1 still open at the last print: 12,142 trades, $1.2M USD turnover. The busiest contract was KXMLBSPREAD-26SEP252215LADSF-LAD2 with $231.6K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXMLBSPREAD-26SEP252215LADSF-LAD2 | 0.630 | 0.990 | 0.560 | 0.990 | 0.737 | Yes | 1,044 | $231.6K | 65 % | buy file → |
| KXMLBSPREAD-26SEP261605LADSF-LAD2 | 0.620 | 0.840 | 0.010 | 0.010 | 0.428 | No | 1,795 | $132.5K | 66 % | buy file → |
| KXMLBSPREAD-26SEP252140HOUATH-HOU2 | 0.520 | 0.670 | 0.010 | 0.010 | 0.405 | No | 1,681 | $126.4K | 54 % | buy file → |
| KXMLBSPREAD-26SEP252210LAASEA-LAA2 | 0.340 | 0.990 | 0.300 | 0.990 | 0.695 | Yes | 1,156 | $123.7K | 33 % | buy file → |
| KXMLBSPREAD-26SEP252215LADSF-LAD3 | 0.500 | 0.740 | 0.010 | 0.010 | 0.447 | No | 1,682 | $120.7K | 64 % | buy file → |
| KXMLBSPREAD-26SEP251940CLEKC-CLE2 | 0.430 | 0.990 | 0.230 | 0.990 | 0.538 | Yes | 1,157 | $92.8K | 45 % | buy file → |
| KXMLBSPREAD-26SEP261910COLCWS-CWS2 | 0.490 | 0.550 | 0.160 | 0.160 | 0.507 | open | 680 | $84.4K | 96 % | buy file → |
| KXMLBSPREAD-26SEP251940STLMIL-MIL2 | 0.560 | 0.990 | 0.140 | 0.990 | 0.601 | Yes | 938 | $82.2K | 47 % | buy file → |
| KXMLBSPREAD-26SEP251840TBPHI-TB2 | 0.570 | 0.990 | 0.180 | 0.990 | 0.630 | Yes | 779 | $81.2K | 61 % | buy file → |
| KXMLBSPREAD-26SEP261605LADSF-LAD3 | 0.480 | 0.750 | 0.010 | 0.010 | 0.412 | No | 1,230 | $77.8K | 50 % | 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.
2026-09-25 — 10 contracts, 22,869 trades, $1.9M turnover
The 10 most traded Pro Baseball Spread contracts on 2026-09-25 — 3 closed Yes (≥ 0.97), 5 closed No (≤ 0.03), 2 still open at the last print: 22,869 trades, $1.9M USD turnover. The busiest contract was KXMLBSPREAD-26SEP242210SDLAD-SD4 with $275.3K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXMLBSPREAD-26SEP242210SDLAD-SD4 | 0.140 | 0.750 | 0.010 | 0.010 | 0.450 | No | 3,195 | $275.3K | 47 % | buy file → |
| KXMLBSPREAD-26SEP242210SDLAD-SD3 | 0.200 | 0.990 | 0.010 | 0.010 | 0.601 | No | 2,564 | $260.3K | 43 % | buy file → |
| KXMLBSPREAD-26SEP242140HOUATH-HOU2 | 0.510 | 0.990 | 0.040 | 0.990 | 0.527 | Yes | 2,267 | $257.0K | 50 % | buy file → |
| KXMLBSPREAD-26SEP242210SDLAD-SD2 | 0.280 | 0.990 | 0.180 | 0.990 | 0.669 | Yes | 2,217 | $251.3K | 53 % | buy file → |
| KXMLBSPREAD-26SEP251305CHCBOSG1-CHC2 | 0.400 | 0.790 | 0.010 | 0.010 | 0.380 | No | 3,073 | $229.9K | 75 % | buy file → |
| KXMLBSPREAD-26SEP242210SDLAD-LAD2 | 0.420 | 0.620 | 0.010 | 0.010 | 0.318 | No | 3,717 | $207.1K | 72 % | buy file → |
| KXMLBSPREAD-26SEP251805CHCBOSG2-CHC2 | 0.390 | 0.780 | 0.150 | 0.200 | 0.371 | open | 1,486 | $136.5K | 85 % | buy file → |
| KXMLBSPREAD-26SEP251840TBPHI-PHI2 | 0.370 | 0.500 | 0.090 | 0.100 | 0.388 | open | 761 | $113.2K | 88 % | buy file → |
| KXMLBSPREAD-26SEP251305CHCBOSG1-CHC3 | 0.290 | 0.720 | 0.010 | 0.010 | 0.374 | No | 2,526 | $112.9K | 35 % | buy file → |
| KXMLBSPREAD-26SEP242140LAASEA-LAA2 | 0.230 | 0.990 | 0.060 | 0.990 | 0.634 | Yes | 1,063 | $101.8K | 26 % | buy file → |
2026-09-24 — 10 contracts, 21,050 trades, $1.9M turnover
The 10 most traded Pro Baseball Spread contracts on 2026-09-24 — 7 closed Yes (≥ 0.97), 2 closed No (≤ 0.03), 1 still open at the last print: 21,050 trades, $1.9M USD turnover. The busiest contract was KXMLBSPREAD-26SEP232210SDLAD-LAD2 with $471.2K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXMLBSPREAD-26SEP232210SDLAD-LAD2 | 0.490 | 0.740 | 0.010 | 0.010 | 0.438 | No | 5,369 | $471.2K | 79 % | buy file → |
| KXMLBSPREAD-26SEP241420MIACHC-CHC2 | 0.450 | 0.840 | 0.010 | 0.010 | 0.393 | No | 3,048 | $287.0K | 76 % | buy file → |
| KXMLBSPREAD-26SEP232210SDLAD-SD3 | 0.160 | 0.990 | 0.050 | 0.990 | 0.606 | Yes | 2,656 | $234.3K | 53 % | buy file → |
| KXMLBSPREAD-26SEP241435NYMTEX-TEX2 | 0.360 | 0.990 | 0.270 | 0.990 | 0.628 | Yes | 1,850 | $180.0K | 61 % | buy file → |
| KXMLBSPREAD-26SEP241510AZCOL-AZ2 | 0.520 | 0.990 | 0.510 | 0.990 | 0.668 | Yes | 1,178 | $170.4K | 54 % | buy file → |
| KXMLBSPREAD-26SEP232210SDLAD-SD2 | 0.240 | 0.990 | 0.080 | 0.990 | 0.586 | Yes | 1,689 | $136.4K | 56 % | buy file → |
| KXMLBSPREAD-26SEP241510AZCOL-AZ4 | 0.330 | 0.990 | 0.310 | 0.990 | 0.807 | Yes | 1,556 | $117.5K | 36 % | buy file → |
| KXMLBSPREAD-26SEP232210SDLAD-SD4 | 0.110 | 0.990 | 0.050 | 0.990 | 0.505 | Yes | 1,471 | $110.5K | 52 % | buy file → |
| KXMLBSPREAD-26SEP241915CINATL-ATL2 | 0.470 | 0.880 | 0.380 | 0.600 | 0.506 | open | 829 | $108.1K | 72 % | buy file → |
| KXMLBSPREAD-26SEP232040AZCOL-AZ2 | 0.510 | 0.990 | 0.360 | 0.990 | 0.692 | Yes | 1,404 | $105.1K | 54 % | buy file → |
2026-09-23 — 10 contracts, 21,253 trades, $1.8M turnover
The 10 most traded Pro Baseball Spread contracts on 2026-09-23 — 4 closed Yes (≥ 0.97), 3 closed No (≤ 0.03), 3 still open at the last print: 21,253 trades, $1.8M USD turnover. The busiest contract was KXMLBSPREAD-26SEP231545MINSF-MIN2 with $374.1K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXMLBSPREAD-26SEP231545MINSF-MIN2 | 0.450 | 0.990 | 0.180 | 0.990 | 0.597 | Yes | 4,955 | $374.1K | 47 % | buy file → |
| KXMLBSPREAD-26SEP231915CINATL-ATL2 | 0.520 | 0.590 | 0.190 | 0.330 | 0.513 | open | 1,829 | $229.4K | 93 % | buy file → |
| KXMLBSPREAD-26SEP221835TORBAL-BAL2 | 0.340 | 0.990 | 0.280 | 0.990 | 0.580 | Yes | 2,365 | $210.5K | 55 % | buy file → |
| KXMLBSPREAD-26SEP231310WSHDET-DET2 | 0.440 | 0.600 | 0.010 | 0.010 | 0.333 | No | 2,561 | $159.5K | 80 % | buy file → |
| KXMLBSPREAD-26SEP231840MILPHI-MIL2 | 0.430 | 0.830 | 0.310 | 0.750 | 0.435 | open | 1,536 | $151.0K | 75 % | buy file → |
| KXMLBSPREAD-26SEP222140LAAATH-ATH3 | 0.230 | 0.930 | 0.010 | 0.010 | 0.561 | No | 1,864 | $145.4K | 46 % | buy file → |
| KXMLBSPREAD-26SEP231940MIACHC-CHC2 | 0.430 | 0.630 | 0.410 | 0.430 | 0.435 | open | 975 | $144.5K | 91 % | buy file → |
| KXMLBSPREAD-26SEP222140LAAATH-ATH2 | 0.330 | 0.990 | 0.020 | 0.990 | 0.520 | Yes | 1,825 | $132.5K | 61 % | buy file → |
| KXMLBSPREAD-26SEP222145MINSF-MIN2 | 0.420 | 0.860 | 0.010 | 0.010 | 0.519 | No | 1,504 | $124.8K | 45 % | buy file → |
| KXMLBSPREAD-26SEP222210SDLAD-LAD2 | 0.360 | 0.990 | 0.250 | 0.990 | 0.562 | Yes | 1,839 | $123.2K | 61 % | buy file → |
2026-09-22 — 10 contracts, 14,603 trades, $1.5M turnover
The 10 most traded Pro Baseball Spread contracts on 2026-09-22 — 3 closed Yes (≥ 0.97), 3 closed No (≤ 0.03), 4 still open at the last print: 14,603 trades, $1.5M USD turnover. The busiest contract was KXMLBSPREAD-26SEP221305TBNYYG1-NYY2 with $316.7K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXMLBSPREAD-26SEP221305TBNYYG1-NYY2 | 0.360 | 0.990 | 0.250 | 0.990 | 0.559 | Yes | 2,808 | $316.7K | 42 % | buy file → |
| KXMLBSPREAD-26SEP212145MINSF-SF3 | 0.210 | 0.990 | 0.200 | 0.990 | 0.676 | Yes | 1,835 | $233.3K | 60 % | buy file → |
| KXMLBSPREAD-26SEP212145MINSF-SF4 | 0.140 | 0.880 | 0.010 | 0.010 | 0.473 | No | 2,740 | $210.8K | 56 % | buy file → |
| KXMLBSPREAD-26SEP221840MILPHI-PHI2 | 0.380 | 0.800 | 0.360 | 0.660 | 0.387 | open | 1,118 | $177.2K | 87 % | buy file → |
| KXMLBSPREAD-26SEP221915CINATL-ATL2 | 0.460 | 0.590 | 0.380 | 0.400 | 0.485 | open | 748 | $118.8K | 94 % | buy file → |
| KXMLBSPREAD-26SEP212145MINSF-SF2 | 0.310 | 0.990 | 0.110 | 0.990 | 0.632 | Yes | 1,229 | $113.3K | 50 % | buy file → |
| KXMLBSPREAD-26SEP221940MIACHC-CHC2 | 0.480 | 0.580 | 0.420 | 0.420 | 0.461 | open | 985 | $86.9K | 92 % | buy file → |
| KXMLBSPREAD-26SEP221305TBNYYG1-NYY3 | 0.240 | 0.720 | 0.010 | 0.010 | 0.338 | No | 1,613 | $86.4K | 41 % | buy file → |
| KXMLBSPREAD-26SEP222040AZCOL-AZ2 | 0.540 | 0.550 | 0.530 | 0.540 | 0.541 | open | 456 | $82.3K | 93 % | buy file → |
| KXMLBSPREAD-26SEP212145MINSF-SF5 | 0.360 | 0.740 | 0.010 | 0.010 | 0.336 | No | 1,071 | $66.5K | 79 % | buy file → |
2026-09-21 — 10 contracts, 6,456 trades, $464.8K turnover
The 10 most traded Pro Baseball Spread contracts on 2026-09-21 — 4 closed Yes (≥ 0.97), 1 closed No (≤ 0.03), 5 still open at the last print: 6,456 trades, $464.8K USD turnover. The busiest contract was KXMLBSPREAD-26SEP201920MILBAL-MIL3 with $132.1K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXMLBSPREAD-26SEP201920MILBAL-MIL3 | 0.440 | 0.990 | 0.170 | 0.990 | 0.608 | Yes | 1,714 | $132.1K | 48 % | buy file → |
| KXMLBSPREAD-26SEP201920MILBAL-MIL2 | 0.590 | 0.990 | 0.290 | 0.990 | 0.741 | Yes | 1,051 | $119.6K | 34 % | buy file → |
| KXMLBSPREAD-26SEP211840WSHDET-DET2 | 0.390 | 0.970 | 0.370 | 0.960 | 0.499 | open | 869 | $82.6K | 72 % | buy file → |
| KXMLBSPREAD-26SEP211835TORBAL-TOR2 | 0.360 | 0.720 | 0.360 | 0.560 | 0.457 | open | 443 | $26.7K | 72 % | buy file → |
| KXMLBSPREAD-26SEP201920MILBAL-MIL4 | 0.300 | 0.600 | 0.010 | 0.010 | 0.309 | No | 829 | $23.5K | 58 % | buy file → |
| KXMLBSPREAD-26SEP211835TORBAL-TOR3 | 0.290 | 0.720 | 0.250 | 0.410 | 0.430 | open | 255 | $22.6K | 35 % | buy file → |
| KXMLBSPREAD-26SEP211840WSHDET-DET3 | 0.310 | 0.960 | 0.200 | 0.960 | 0.533 | open | 464 | $17.1K | 51 % | buy file → |
| KXMLBSPREAD-26SEP201410DETCWS-CWS6 | 0.650 | 0.990 | 0.130 | 0.990 | 0.608 | Yes | 245 | $14.2K | 46 % | buy file → |
| KXMLBSPREAD-26SEP201410DETCWS-CWS7 | 0.410 | 0.990 | 0.010 | 0.990 | 0.579 | Yes | 295 | $13.9K | 65 % | buy file → |
| KXMLBSPREAD-26SEP211840WSHDET-DET4 | 0.210 | 0.920 | 0.190 | 0.920 | 0.507 | open | 291 | $12.5K | 64 % | buy file → |
2026-09-20 — 10 contracts, 10,534 trades, $1.1M turnover
The 10 most traded Pro Baseball Spread contracts on 2026-09-20 — 5 closed Yes (≥ 0.97), 4 closed No (≤ 0.03), 1 still open at the last print: 10,534 trades, $1.1M USD turnover. The busiest contract was KXMLBSPREAD-26SEP201920MILBAL-MIL2 with $318.6K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXMLBSPREAD-26SEP201920MILBAL-MIL2 | 0.530 | 0.690 | 0.360 | 0.590 | 0.526 | open | 1,334 | $318.6K | 82 % | buy file → |
| KXMLBSPREAD-26SEP201310PHINYM-PHI2 | 0.470 | 0.990 | 0.440 | 0.990 | 0.508 | Yes | 709 | $251.2K | 85 % | buy file → |
| KXMLBSPREAD-26SEP192110SFLAD-LAD2 | 0.610 | 0.990 | 0.330 | 0.990 | 0.653 | Yes | 958 | $114.8K | 66 % | buy file → |
| KXMLBSPREAD-26SEP201610SFLAD-LAD2 | 0.520 | 0.990 | 0.170 | 0.990 | 0.528 | Yes | 1,600 | $109.4K | 61 % | buy file → |
| KXMLBSPREAD-26SEP201340ATHCLE-CLE2 | 0.490 | 0.610 | 0.010 | 0.010 | 0.438 | No | 872 | $75.0K | 79 % | buy file → |
| KXMLBSPREAD-26SEP192010NYYAZ-NYY2 | 0.460 | 0.560 | 0.010 | 0.010 | 0.371 | No | 1,115 | $56.9K | 71 % | buy file → |
| KXMLBSPREAD-26SEP192040MIASD-SD2 | 0.400 | 0.700 | 0.010 | 0.010 | 0.255 | No | 1,504 | $54.9K | 67 % | buy file → |
| KXMLBSPREAD-26SEP192110SFLAD-LAD3 | 0.470 | 0.990 | 0.180 | 0.990 | 0.583 | Yes | 929 | $52.4K | 58 % | buy file → |
| KXMLBSPREAD-26SEP201610NYYAZ-AZ4 | 0.170 | 0.990 | 0.020 | 0.990 | 0.642 | Yes | 314 | $43.8K | 63 % | buy file → |
| KXMLBSPREAD-26SEP192138MINLAA-MIN2 | 0.350 | 0.930 | 0.010 | 0.010 | 0.375 | No | 1,199 | $42.2K | 65 % | buy file → |
How a Pro Baseball Spread contract trades
On Kalshi, a Pro Baseball Spread contract trades for about 29 h from open to close, is listed roughly 10 min before it opens, and quotes in 1 ¢ price steps (0..1). Measured on the 10 contracts captured on 2026-09-26.
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-26SEP182215SFLAD-LAD2 minute by minute — 2026-09-19
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-26SEP182215SFLAD-LAD2 traded in 279 of the day’s minutes (00:00–04:54 UTC): 5,487 trades, $485.9K turnover, opening at 0.550, ranging 0.140–0.990 and closing at 0.990.
| Minute (UTC) | Open | High | Low | Close | Trades | Turnover | Spread | Top-1 bid / ask |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $9.84 | 1.00 ¢ | $56.9K / $60.0K |
| 00:02 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $9.64 | 1.00 ¢ | $57.5K / $60.0K |
| 00:03 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $102.85 | 1.00 ¢ | $57.5K / $60.0K |
| 00:06 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $9.35 | 1.00 ¢ | $57.3K / $59.9K |
| 00:07 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $2.03 | 1.00 ¢ | $57.2K / $59.9K |
| 00:08 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $26.89 | 1.00 ¢ | $56.8K / $59.9K |
| 00:09 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $11.55 | 1.00 ¢ | $58.5K / $59.8K |
| 00:11 | 0.550 | 0.540 | 0.540 | 0.540 | 1 | $115.21 | 1.00 ¢ | $62.9K / $59.9K |
| 00:12 | 0.540 | 0.550 | 0.540 | 0.550 | 3 | $60.85 | 1.00 ¢ | $62.9K / $59.8K |
| 00:13 | 0.550 | 0.550 | 0.550 | 0.550 | 7 | $120.72 | 1.00 ¢ | $62.9K / $59.7K |
| 00:14 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $8.86 | 1.00 ¢ | $57.8K / $59.7K |
| 00:15 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $98.05 | 1.00 ¢ | $58.7K / $59.6K |
| 00:16 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $203.71 | 1.00 ¢ | $58.8K / $59.4K |
| 00:17 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $11.81 | 1.00 ¢ | $59.6K / $59.3K |
| 00:19 | 0.550 | 0.550 | 0.550 | 0.550 | 4 | $19.53 | 1.00 ¢ | $59.8K / $59.3K |
| 00:22 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $3.94 | 1.00 ¢ | $59.9K / $59.3K |
| 00:23 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $374.11 | 1.00 ¢ | $59.8K / $59.2K |
| 00:24 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $9.84 | 1.00 ¢ | $59.8K / $58.9K |
| 00:25 | 0.550 | 0.550 | 0.550 | 0.550 | 3 | $134.39 | 1.00 ¢ | $59.6K / $58.8K |
| 00:27 | 0.550 | 0.550 | 0.540 | 0.540 | 5 | $154.61 | 1.00 ¢ | $59.1K / $58.7K |
| 00:28 | 0.540 | 0.550 | 0.550 | 0.550 | 1 | $8.25 | 1.00 ¢ | $59.0K / $58.7K |
| 00:29 | 0.550 | 0.550 | 0.540 | 0.550 | 3 | $117.98 | 1.00 ¢ | $58.8K / $58.6K |
| 00:30 | 0.550 | 0.550 | 0.550 | 0.550 | 3 | $121 | 1.00 ¢ | $58.8K / $58.5K |
| 00:31 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $42.35 | 1.00 ¢ | $58.8K / $58.4K |
| 00:33 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $42.35 | 1.00 ¢ | $58.8K / $58.4K |
| 00:34 | 0.550 | 0.550 | 0.540 | 0.550 | 3 | $142.79 | 1.00 ¢ | $58.7K / $58.3K |
| 00:35 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $250.52 | 1.00 ¢ | $58.7K / $58.1K |
| 00:36 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $72.85 | 1.00 ¢ | $58.7K / $58.0K |
| 00:37 | 0.550 | 0.550 | 0.550 | 0.550 | 4 | $574.93 | 1.00 ¢ | $58.7K / $57.8K |
| 00:38 | 0.550 | 0.550 | 0.550 | 0.550 | 4 | $83.67 | 1.00 ¢ | $58.7K / $57.4K |
| 00:39 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $64.64 | 1.00 ¢ | $58.7K / $57.3K |
| 00:40 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $32.48 | 1.00 ¢ | $58.7K / $57.2K |
| 00:41 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $46.75 | 1.00 ¢ | $58.7K / $57.2K |
| 00:42 | 0.550 | 0.550 | 0.540 | 0.540 | 4 | $95.28 | 1.00 ¢ | $59.0K / $57.1K |
| 00:43 | 0.540 | 0.550 | 0.550 | 0.550 | 3 | $148.5 | 1.00 ¢ | $59.3K / $57.0K |
| 00:44 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $30.8 | 1.00 ¢ | $59.3K / $56.9K |
| 00:45 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $57.89 | 1.00 ¢ | $59.3K / $56.9K |
| 00:46 | 0.550 | 0.550 | 0.540 | 0.550 | 2 | $313.73 | 1.00 ¢ | $59.2K / $56.8K |
| 00:48 | 0.550 | 0.550 | 0.550 | 0.550 | 3 | $139.09 | 1.00 ¢ | $59.1K / $56.6K |
| 00:49 | 0.550 | 0.550 | 0.540 | 0.550 | 5 | $124.85 | 1.00 ¢ | $59.0K / $56.6K |
| 00:50 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $24.2 | 1.00 ¢ | $59.3K / $56.5K |
| 00:51 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $49.22 | 1.00 ¢ | $61.2K / $56.5K |
| 00:52 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $9.84 | 1.00 ¢ | $61.4K / $56.5K |
| 00:53 | 0.550 | 0.550 | 0.540 | 0.540 | 3 | $309.45 | 1.00 ¢ | $61.8K / $56.3K |
| 00:54 | 0.540 | 0.550 | 0.550 | 0.550 | 2 | $994.33 | 1.00 ¢ | $61.8K / $55.8K |
| 00:55 | 0.550 | 0.550 | 0.540 | 0.540 | 2 | $46.94 | 1.00 ¢ | $61.8K / $55.1K |
| 00:58 | 0.540 | 0.550 | 0.550 | 0.550 | 3 | $63.62 | 1.00 ¢ | $61.8K / $55.1K |
| 00:59 | 0.550 | 0.550 | 0.550 | 0.550 | 3 | $211.2 | 1.00 ¢ | $61.8K / $55.0K |
| 01:01 | 0.550 | 0.550 | 0.550 | 0.550 | 3 | $1.1K | 1.00 ¢ | $67.0K / $53.6K |
| 01:02 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $61.6 | 1.00 ¢ | $67.0K / $52.6K |
| 01:03 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $639.92 | 1.00 ¢ | $67.0K / $52.6K |
| 01:04 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $74.6 | 1.00 ¢ | $67.0K / $51.9K |
| 01:05 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $9.35 | 1.00 ¢ | $67.0K / $51.9K |
| 01:06 | 0.550 | 0.550 | 0.550 | 0.550 | 4 | $311.55 | 1.00 ¢ | $66.7K / $51.8K |
| 01:07 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $22.55 | 1.00 ¢ | $61.8K / $51.5K |
| 01:08 | 0.550 | 0.550 | 0.550 | 0.550 | 4 | $732.48 | 1.00 ¢ | $61.7K / $51.4K |
| 01:10 | 0.550 | 0.550 | 0.540 | 0.550 | 3 | $102.89 | 1.00 ¢ | $51.9K / $32.1K |
| 01:11 | 0.550 | 0.550 | 0.550 | 0.550 | 5 | $3.5K | 1.00 ¢ | $43.0K / $21.5K |
| 01:13 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $28.57 | 1.00 ¢ | $42.4K / $12.9K |
| 01:14 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $4.95 | 1.00 ¢ | $46.2K / $12.8K |
| 01:15 | 0.550 | 0.550 | 0.550 | 0.550 | 5 | $584.71 | 1.00 ¢ | $46.7K / $12.7K |
| 01:16 | 0.550 | 0.550 | 0.540 | 0.540 | 2 | $194.07 | 1.00 ¢ | $46.9K / $12.1K |
| 01:17 | 0.540 | 0.550 | 0.540 | 0.550 | 6 | $93.78 | 1.00 ¢ | $46.9K / $12.0K |
| 01:18 | 0.550 | 0.550 | 0.550 | 0.550 | 4 | $119.79 | 1.00 ¢ | $46.7K / $11.9K |
| 01:19 | 0.550 | 0.550 | 0.550 | 0.550 | 3 | $291.42 | 1.00 ¢ | $46.4K / $11.8K |
| 01:20 | 0.550 | 0.550 | 0.540 | 0.550 | 5 | $256.79 | 1.00 ¢ | $46.4K / $11.5K |
| 01:21 | 0.550 | 0.550 | 0.540 | 0.550 | 4 | $190.4 | 1.00 ¢ | $53.0K / $7.1K |
| 01:22 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $59.6 | 1.00 ¢ | $60.5K / $7.6K |
| 01:23 | 0.550 | 0.550 | 0.550 | 0.550 | 1 | $14.77 | 1.00 ¢ | $60.7K / $11.6K |
| 01:24 | 0.550 | 0.550 | 0.550 | 0.550 | 9 | $650.55 | 1.00 ¢ | $60.7K / $10.9K |
| 01:25 | 0.550 | 0.550 | 0.550 | 0.550 | 5 | $502.53 | 1.00 ¢ | $60.7K / $10.4K |
| 01:26 | 0.550 | 0.550 | 0.550 | 0.550 | 5 | $142.03 | 1.00 ¢ | $60.7K / $9.9K |
| 01:27 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $315.7 | 1.00 ¢ | $61.1K / $9.6K |
| 01:28 | 0.550 | 0.550 | 0.550 | 0.550 | 2 | $51.19 | 1.00 ¢ | $62.2K / $9.5K |
| 01:29 | 0.550 | 0.560 | 0.550 | 0.560 | 9 | $3.8K | 1.07 ¢ | $50.2K / $34.5K |
| 01:30 | 0.560 | 0.560 | 0.560 | 0.560 | 3 | $33.26 | 1.00 ¢ | $7.4K / $102.2K |
| 01:31 | 0.560 | 0.560 | 0.560 | 0.560 | 1 | $9.85 | 1.00 ¢ | $22.7K / $108.5K |
| 01:32 | 0.560 | 0.560 | 0.560 | 0.560 | 4 | $144.1 | 1.00 ¢ | $22.7K / $108.4K |
| 01:33 | 0.560 | 0.560 | 0.550 | 0.550 | 10 | $1.9K | 1.00 ¢ | $22.8K / $108.3K |
| 01:34 | 0.550 | 0.560 | 0.550 | 0.550 | 3 | $263.14 | 1.00 ¢ | $15.9K / $108.4K |
| 01:35 | 0.550 | 0.560 | 0.560 | 0.560 | 4 | $62.89 | 1.00 ¢ | $31.5K / $108.7K |
| 01:36 | 0.560 | 0.560 | 0.560 | 0.560 | 5 | $363.46 | 1.00 ¢ | $37.4K / $109.0K |
| 01:37 | 0.560 | 0.560 | 0.550 | 0.560 | 4 | $296.98 | 1.00 ¢ | $40.9K / $109.1K |
| 01:38 | 0.560 | 0.560 | 0.560 | 0.560 | 3 | $102.61 | 1.00 ¢ | $43.0K / $107.5K |
| 01:39 | 0.560 | 0.560 | 0.560 | 0.560 | 6 | $196.51 | 1.00 ¢ | $53.2K / $91.2K |
| 01:40 | 0.560 | 0.560 | 0.550 | 0.560 | 4 | $102.97 | 1.00 ¢ | $53.5K / $93.0K |
| 01:41 | 0.560 | 0.560 | 0.560 | 0.560 | 9 | $2.4K | 1.00 ¢ | $53.5K / $106.2K |
| 01:42 | 0.560 | 0.560 | 0.560 | 0.560 | 7 | $1.2K | 1.00 ¢ | $53.5K / $103.5K |
| 01:43 | 0.560 | 0.560 | 0.560 | 0.560 | 3 | $146.33 | 1.00 ¢ | $53.5K / $102.8K |
| 01:44 | 0.560 | 0.560 | 0.560 | 0.560 | 4 | $886.34 | 1.00 ¢ | $53.5K / $102.5K |
| 01:45 | 0.560 | 0.560 | 0.560 | 0.560 | 10 | $2.3K | 1.00 ¢ | $53.3K / $104.7K |
| 01:47 | 0.560 | 0.560 | 0.560 | 0.560 | 1 | $39.4 | 1.00 ¢ | $45.3K / $137.3K |
| 01:48 | 0.560 | 0.560 | 0.560 | 0.560 | 4 | $302.73 | 1.00 ¢ | $45.3K / $146.2K |
| 01:49 | 0.560 | 0.560 | 0.550 | 0.560 | 10 | $1.0K | 1.00 ¢ | $44.8K / $145.7K |
| 01:50 | 0.560 | 0.560 | 0.560 | 0.560 | 4 | $259.4 | 1.00 ¢ | $35.7K / $145.6K |
| 01:51 | 0.560 | 0.560 | 0.560 | 0.560 | 7 | $2.2K | 1.00 ¢ | $37.2K / $143.9K |
| 01:52 | 0.560 | 0.560 | 0.550 | 0.550 | 5 | $275.42 | 1.00 ¢ | $38.1K / $142.7K |
| 01:53 | 0.550 | 0.560 | 0.560 | 0.560 | 5 | $1.7K | 1.00 ¢ | $37.9K / $141.7K |
| 01:54 | 0.560 | 0.560 | 0.560 | 0.560 | 6 | $601.25 | 1.00 ¢ | $37.9K / $140.9K |
| 01:55 | 0.560 | 0.560 | 0.550 | 0.560 | 12 | $570.59 | 1.00 ¢ | $37.9K / $121.8K |
| 01:56 | 0.560 | 0.560 | 0.550 | 0.560 | 8 | $2.7K | 1.00 ¢ | $38.0K / $104.9K |
| 01:57 | 0.560 | 0.560 | 0.560 | 0.560 | 4 | $236.13 | 1.00 ¢ | $37.7K / $103.9K |
| 01:58 | 0.560 | 0.560 | 0.560 | 0.560 | 3 | $12.29 | 1.00 ¢ | $41.5K / $99.2K |
| 01:59 | 0.560 | 0.560 | 0.560 | 0.560 | 4 | $1.1K | 1.00 ¢ | $52.5K / $97.2K |
| 02:00 | 0.560 | 0.560 | 0.560 | 0.560 | 11 | $1.6K | 1.00 ¢ | $52.6K / $96.2K |
| 02:01 | 0.560 | 0.560 | 0.550 | 0.550 | 9 | $1.2K | 1.00 ¢ | $52.6K / $94.5K |
| 02:02 | 0.550 | 0.560 | 0.560 | 0.560 | 7 | $830.34 | 1.00 ¢ | $52.7K / $93.7K |
| 02:03 | 0.560 | 0.560 | 0.550 | 0.560 | 12 | $3.1K | 1.00 ¢ | $52.7K / $91.6K |
| 02:04 | 0.560 | 0.560 | 0.550 | 0.560 | 8 | $707 | 1.00 ¢ | $52.8K / $89.6K |
| 02:05 | 0.560 | 0.560 | 0.550 | 0.560 | 8 | $5.2K | 1.00 ¢ | $52.6K / $88.3K |
| 02:06 | 0.560 | 0.560 | 0.550 | 0.560 | 10 | $4.5K | 1.00 ¢ | $50.3K / $82.9K |
| 02:07 | 0.560 | 0.560 | 0.560 | 0.560 | 11 | $1.6K | 1.00 ¢ | $46.9K / $79.6K |
| 02:08 | 0.560 | 0.560 | 0.560 | 0.560 | 8 | $534.78 | 1.00 ¢ | $46.8K / $78.2K |
| 02:09 | 0.560 | 0.560 | 0.560 | 0.560 | 15 | $1.4K | 1.00 ¢ | $46.8K / $76.9K |
| 02:10 | 0.560 | 0.560 | 0.550 | 0.560 | 11 | $2.4K | 1.00 ¢ | $30.8K / $75.4K |
| 02:11 | 0.560 | 0.560 | 0.560 | 0.560 | 12 | $5.3K | 1.00 ¢ | $37.5K / $69.5K |
| 02:12 | 0.560 | 0.560 | 0.560 | 0.560 | 6 | $738.08 | 1.00 ¢ | $38.3K / $68.1K |
| 02:13 | 0.560 | 0.560 | 0.550 | 0.560 | 13 | $3.4K | 1.00 ¢ | $28.6K / $67.6K |
| 02:14 | 0.560 | 0.560 | 0.550 | 0.560 | 12 | $1.0K | 1.00 ¢ | $12.3K / $66.2K |
| 02:15 | 0.560 | 0.560 | 0.550 | 0.560 | 13 | $852.53 | 1.13 ¢ | $5.8K / $16.8K |
First 120 of 279 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.
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 every venue has free full-day samples to test against 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.
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 (278 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 — 187 trading days in total.
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 191 Pro Baseball Spread contracts had at least one trade per UTC day over the last 30 captured days on Kalshi, with about 14.3M 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 30 captured days, the turnover-weighted quoted bid-ask spread was 2.61 ¢ (contracts quote 0..1 = 100 ¢), the mean best-bid/best-ask notional was about $10.4K per side, 61 % 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 2026-09-26?
KXMLBSPREAD-26SEP252215LADSF-LAD2 — $231.6K USD turnover over 1,044 trades on Kalshi. The 10 most traded contracts of the series did 12,142 trades and $1.2M 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.
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 4,339,332 trades and $297.2M over 81 captured days; the single biggest contract was KXMLBSPREAD-26AUG141420STLCHC-CHC2 on 2026-08-14 with $1.0M. Any of these days is a downloadable bundle.