Kalshi KXLEADERMLBWINS — MLB Wins Leader Data
Every Kalshi “MLB Wins Leader” contract of the day — every trade print and the complete Level-2 book, captured co-located with nanosecond venue and receive timestamps. 209 trading days as day bundles, €1 per day, bought as a guest with instant download.
MLB Wins Leader on Kalshi — activity
Per-day trade and turnover statistics exist from July 2026 onward — a limit of the statistics, not of the capture: older days are archived in full (every contract, every message) without a statistics row.
One purchase, the whole series for a day
A series-day bundle contains every MLB Wins Leader contract that was listed on Kalshi on that UTC day — traded or not — 60 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 – September 2026 — 209 trading days, 156 MB compressed in total. A day typically holds 55 contract files (up to 60 on the busiest day, 52.7 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.
MLB Wins Leader — development since capture
2,153 trades and $31.6K of USD turnover over 73 captured days since 2026-07-18 — record day 2026-09-26 with $10.4K, biggest single contract KXLEADERMLBWINS-26-CSAN (LEADERMLBWINS · CSAN) (2026-09-26, $6.6K).
| Month | Days | Trades | Turnover (USD) | Avg / day | Contracts traded | L2 updates | vs previous month |
|---|---|---|---|---|---|---|---|
| Sep 2026 | 28 | 1,325 | $28.4K | $1.0K | 84 | 1.2M | +1228.0 % |
| Aug 2026 | 31 | 574 | $2.1K | $69.04 | 59 | 2.9M | +111.6 % |
| Jul 2026 | 14 | 254 | $1.0K | $72.25 | — | — | — |
Kalshi MLB Wins Leader — 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.
MLB Wins Leader — 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-09-28 | 60 | 63.4 KB | 0 | 0 | $0 | — | — | — | 69 | Buy day → | |
| 2026-09-27 | 60 | 975 KB | 2 | 65 | $5.3K | 26 % | 1.90 ¢ | $217.42 | 30.8K | Buy day → | |
| 2026-09-26 | 60 | 1.35 MB | 3 | 247 | $10.4K | 42 % | 2.13 ¢ | $460.41 | 42.9K | Buy day → | |
| 2026-09-25 | 60 | 1.95 MB | 2 | 40 | $467.63 | 48 % | 12.1 ¢ | $62.5 | 66.2K | Buy day → | |
| 2026-09-24 | 60 | 3.68 MB | 2 | 167 | $1.9K | 48 % | 6.64 ¢ | $25.86 | 138.5K | Buy day → | |
| 2026-09-23 | 60 | 2.06 MB | 5 | 58 | $224.51 | 19 % | 3.18 ¢ | $57.14 | 72.4K | Buy day → | |
| 2026-09-22 | 60 | 1.48 MB | 2 | 34 | $837.89 | 96 % | 3.44 ¢ | $27.23 | 50.5K | Buy day → | |
| 2026-09-21 | 60 | 1.42 MB | 2 | 51 | $1.1K | 86 % | 3.13 ¢ | $46.46 | 46.8K | Buy day → | |
| 2026-09-20 | 60 | 1.82 MB | 3 | 24 | $199.06 | 78 % | 3.29 ¢ | $37.27 | 63.8K | Buy day → | |
| 2026-09-19 | 60 | 2.01 MB | 2 | 24 | $145.65 | 35 % | 2.80 ¢ | $38.93 | 67.0K | Buy day → | |
| 2026-09-18 | 60 | 2.34 MB | 5 | 82 | $592.86 | 69 % | 4.29 ¢ | $22.89 | 68.4K | Buy day → | |
| 2026-09-17 | 60 | 2.80 MB | 5 | 23 | $65.15 | 61 % | 8.94 ¢ | $10.06 | 94.3K | Buy day → | |
| 2026-09-16 | 60 | 1.64 MB | 4 | 74 | $846.15 | 55 % | 4.86 ¢ | $16.59 | 53.2K | Buy day → | |
| 2026-09-15 | 60 | 1.16 MB | 5 | 39 | $538.47 | 86 % | 2.92 ¢ | $18.54 | 38.8K | Buy day → | |
| 2026-09-14 | 60 | 2.62 MB | 4 | 15 | $133.85 | 75 % | 3.35 ¢ | $25.14 | 95.5K | Buy day → | |
| 2026-09-13 | 57 | 3.16 MB | 3 | 25 | $228.15 | 40 % | 3.39 ¢ | $24.99 | 115.3K | Buy day → | |
| 2026-09-12 | 57 | 2.13 MB | 3 | 77 | $865.29 | 54 % | 5.77 ¢ | $24.34 | 57.9K | Buy day → | |
| 2026-09-11 | 57 | 888 KB | 2 | 51 | $1.5K | 79 % | 1.93 ¢ | $39.91 | 21.1K | Buy day → | |
| 2026-09-10 | 57 | 780 KB | 5 | 85 | $2.1K | 91 % | 5.21 ¢ | $34.23 | 21.7K | Buy day → | |
| 2026-09-09 | 57 | 452 KB | 4 | 32 | $232.15 | 79 % | 5.85 ¢ | $28.01 | 9.7K | Buy day → | |
| 2026-09-08 | 57 | 367 KB | 4 | 15 | $28.44 | 8 % | 42.3 ¢ | $30.13 | 7.3K | Buy day → | |
| 2026-09-07 | 57 | 256 KB | 0 | 0 | $0 | — | — | — | 3.4K | Buy day → | |
| 2026-09-06 | 57 | 356 KB | 3 | 30 | $415.97 | 99 % | 31.6 ¢ | $24.98 | 7.6K | Buy day → | |
| 2026-09-05 | 57 | 378 KB | 2 | 22 | $153.86 | 19 % | 3.44 ¢ | $26.53 | 9.5K | Buy day → | |
| 2026-09-04 | 57 | 206 KB | 3 | 15 | $38.37 | 30 % | 8.05 ¢ | $10.39 | 3.2K | Buy day → | |
| 2026-09-03 | 57 | 523 KB | 2 | 12 | $108.69 | 100 % | 8.11 ¢ | $28.38 | 12.8K | Buy day → | |
| 2026-09-02 | 57 | 335 KB | 2 | 6 | $2.28 | 42 % | 7.12 ¢ | $37.35 | 6.6K | Buy day → | |
| 2026-09-01 | 57 | 630 KB | 5 | 12 | $14.21 | 100 % | 7.51 ¢ | $7.76 | 17.3K | Buy day → | |
| 2026-08-31 | 57 | 615 KB | 4 | 26 | $49.34 | 70 % | 4.60 ¢ | $19.53 | 15.4K | Buy day → | |
| 2026-08-30 | 57 | 307 KB | 3 | 33 | $159.12 | 1 % | 5.51 ¢ | $10.63 | 5.1K | 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 MLB Wins Leader 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 2 most traded MLB Wins Leader contracts on 2026-09-27 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 2 still open at the last print: 65 trades, $5.3K USD turnover. The busiest contract was KXLEADERMLBWINS-26-CSAN with $3.8K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXLEADERMLBWINS-26-CSAN LEADERMLBWINS · CSAN | 2026-09-28 01:01 | 0.520 | 0.520 | 0.470 | 0.500 | 0.485 | open | 46 | $3.8K | 34 % | 2.27 ¢ | $290.35 | 1.4K | buy file → |
| KXLEADERMLBWINS-26-SGRA LEADERMLBWINS · SGRA | 2026-09-28 01:01 | 0.510 | 0.510 | 0.480 | 0.500 | 0.482 | open | 19 | $1.5K | 6 % | 1.00 ¢ | $36.34 | 24.5K | 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).
2026-09-26 — 3 contracts, 247 trades, $10.4K turnover
The 3 most traded MLB Wins Leader contracts on 2026-09-26 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 3 still open at the last print: 247 trades, $10.4K USD turnover. The busiest contract was KXLEADERMLBWINS-26-CSAN with $6.6K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXLEADERMLBWINS-26-CSAN LEADERMLBWINS · CSAN | 2026-09-28 01:01 | 0.490 | 0.560 | 0.340 | 0.520 | 0.440 | open | 147 | $6.6K | 11 % | 1.79 ¢ | $684.16 | 7.6K | buy file → |
| KXLEADERMLBWINS-26-SGRA LEADERMLBWINS · SGRA | 2026-09-28 01:01 | 0.470 | 0.670 | 0.470 | 0.510 | 0.566 | open | 98 | $3.8K | 95 % | 2.72 ¢ | $73.12 | 25.1K | buy file → |
| KXLEADERMLBWINS-26-GWIL LEADERMLBWINS · GWIL | 2026-09-28 00:30 | 0.100 | 0.100 | 0.100 | 0.100 | 0.100 | open | 2 | $4 | 100 % | — | — | 77 | buy file → |
2026-09-25 — 2 contracts, 40 trades, $467.63 turnover
The 2 most traded MLB Wins Leader contracts on 2026-09-25 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 2 still open at the last print: 40 trades, $467.63 USD turnover. The busiest contract was KXLEADERMLBWINS-26-CSAN with $373.48 turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXLEADERMLBWINS-26-CSAN LEADERMLBWINS · CSAN | 2026-09-28 01:01 | 0.650 | 0.820 | 0.460 | 0.490 | 0.621 | open | 33 | $373.48 | 42 % | 13.6 ¢ | $72.49 | 34.2K | buy file → |
| KXLEADERMLBWINS-26-SGRA LEADERMLBWINS · SGRA | 2026-09-28 01:01 | 0.320 | 0.470 | 0.310 | 0.470 | 0.408 | open | 7 | $94.15 | 74 % | 5.93 ¢ | $22.89 | 28.0K | buy file → |
2026-09-24 — 2 contracts, 167 trades, $1.9K turnover
The 2 most traded MLB Wins Leader contracts on 2026-09-24 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 2 still open at the last print: 167 trades, $1.9K USD turnover. The busiest contract was KXLEADERMLBWINS-26-CSAN with $1.6K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXLEADERMLBWINS-26-CSAN LEADERMLBWINS · CSAN | 2026-09-28 01:01 | 0.830 | 0.840 | 0.530 | 0.650 | 0.686 | open | 104 | $1.6K | 39 % | 6.37 ¢ | $28.82 | 65.7K | buy file → |
| KXLEADERMLBWINS-26-SGRA LEADERMLBWINS · SGRA | 2026-09-28 01:01 | 0.200 | 0.410 | 0.170 | 0.320 | 0.260 | open | 63 | $325.63 | 94 % | 7.94 ¢ | $11.73 | 69.3K | buy file → |
2026-09-23 — 5 contracts, 58 trades, $224.51 turnover
The 5 most traded MLB Wins Leader contracts on 2026-09-23 — 0 closed Yes (≥ 0.97), 3 closed No (≤ 0.03), 2 still open at the last print: 58 trades, $224.51 USD turnover. The busiest contract was KXLEADERMLBWINS-26-CSAN with $197.85 turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXLEADERMLBWINS-26-CSAN LEADERMLBWINS · CSAN | 2026-09-28 01:01 | 0.830 | 0.830 | 0.790 | 0.830 | 0.803 | open | 29 | $197.85 | 9 % | 2.71 ¢ | $61.94 | 12.8K | buy file → |
| KXLEADERMLBWINS-26-SGRA LEADERMLBWINS · SGRA | 2026-09-28 01:01 | 0.560 | 0.560 | 0.150 | 0.200 | 0.201 | open | 23 | $26.24 | 90 % | 6.77 ¢ | $21.61 | 39.0K | buy file → |
| KXLEADERMLBWINS-26-SALC LEADERMLBWINS · SALC | 2026-09-28 00:30 | 0.010 | 0.010 | 0.010 | 0.010 | 0.010 | No | 4 | $0.4 | 0 % | 2.29 ¢ | $13.48 | 4.0K | buy file → |
| KXLEADERMLBWINS-26-ZWHE LEADERMLBWINS · ZWHE | 2026-09-28 00:30 | 0.010 | 0.010 | 0.010 | 0.010 | 0.010 | No | 1 | $0.01 | 0 % | 17.5 ¢ | $5.12 | 1.3K | buy file → |
| KXLEADERMLBWINS-26-JMIS LEADERMLBWINS · JMIS | 2026-09-28 00:30 | 0.010 | 0.010 | 0.010 | 0.010 | 0.010 | No | 1 | $0.01 | 0 % | 16.7 ¢ | $5.93 | 1.6K | buy file → |
2026-09-22 — 2 contracts, 34 trades, $837.89 turnover
The 2 most traded MLB Wins Leader contracts on 2026-09-22 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 2 still open at the last print: 34 trades, $837.89 USD turnover. The busiest contract was KXLEADERMLBWINS-26-CSAN with $817.83 turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXLEADERMLBWINS-26-CSAN LEADERMLBWINS · CSAN | 2026-09-28 01:01 | 0.790 | 0.840 | 0.780 | 0.830 | 0.814 | open | 29 | $817.83 | 98 % | 3.36 ¢ | $27.64 | 9.8K | buy file → |
| KXLEADERMLBWINS-26-SGRA LEADERMLBWINS · SGRA | 2026-09-28 01:01 | 0.100 | 0.560 | 0.100 | 0.560 | 0.182 | open | 5 | $20.06 | 24 % | 6.63 ¢ | $10.54 | 28.6K | buy file → |
2026-09-21 — 2 contracts, 51 trades, $1.1K turnover
The 2 most traded MLB Wins Leader contracts on 2026-09-21 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 2 still open at the last print: 51 trades, $1.1K USD turnover. The busiest contract was KXLEADERMLBWINS-26-CSAN with $1.1K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXLEADERMLBWINS-26-CSAN LEADERMLBWINS · CSAN | 2026-09-28 01:01 | 0.670 | 0.790 | 0.640 | 0.790 | 0.714 | open | 45 | $1.1K | 86 % | 3.10 ¢ | $46.56 | 21.5K | buy file → |
| KXLEADERMLBWINS-26-SGRA LEADERMLBWINS · SGRA | 2026-09-28 01:01 | 0.320 | 0.320 | 0.090 | 0.100 | 0.129 | open | 6 | $2.33 | 0 % | 16.0 ¢ | $4.02 | 16.9K | buy file → |
How a MLB Wins Leader contract trades
On Kalshi, a MLB Wins Leader contract trades for about 231 days from open to close, is listed roughly 4.4 days before it opens, and quotes in 1 ¢ price steps (0..1). Measured on the 2 contracts captured on 2026-09-27.
Build a MLB Wins Leader model on this data
Every settled MLB Wins Leader 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 MLB Wins Leader 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 MLB Wins Leader data — FAQ
What Kalshi MLB Wins Leader data can I download?
Tick-by-tick trades and Level-2 order-book depth for every contract of the MLB Wins Leader series on Kalshi (60 contract files on the latest day). One bundle = one UTC day of the whole series.
What is the Kalshi series ticker for MLB Wins Leader?
KXLEADERMLBWINS — 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 KXLEADERMLBWINS-* contract listed that UTC day.
How far back does the MLB Wins Leader data go?
Coverage runs March 2026 – September 2026 — 209 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 MLB Wins Leader 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 MLB Wins Leader 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 MLB Wins Leader 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 MLB Wins Leader 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.
What was the most traded MLB Wins Leader contract on 2026-09-27?
KXLEADERMLBWINS-26-CSAN (LEADERMLBWINS · CSAN) — $3.8K USD turnover over 46 trades on Kalshi. The 2 most traded contracts of the series did 65 trades and $5.3K 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 MLB Wins Leader trading day on Kalshi?
2026-09-26, with $10.4K of USD turnover over 247 trades across every MLB Wins Leader contract of the day; the busiest full month was Sep 2026 at $28.4K. Since our statistics began on 2026-07-18 the series has recorded 2,153 trades and $31.6K over 73 captured days; the single biggest contract was KXLEADERMLBWINS-26-CSAN (LEADERMLBWINS · CSAN) on 2026-09-26 with $6.6K. Any of these days is a downloadable bundle.