Tick-by-tick trades and order-book depth for every Kalshi “World Series” contract — 183 trading days as downloadable day bundles, €1 per day.
Per-day trade and turnover statistics exist from July 2026 onward; older days are archived without them.
A series-day bundle contains every World Series contract that traded on Kalshi on that UTC day — 30 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 — 183 trading days, 3.05 GB compressed in total. A day typically holds 30 contract files (up to 30 on the busiest day, 227 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.
Files, size and — where our daily statistics exist — trades and USD turnover per UTC day. “—” means the day predates the statistics capture, not zero activity.
The 24 largest World Series contract files recorded on 2026-09-02 with that day’s trades, USD turnover and last price per contract— every contract of the series is inside that day's bundle; single contracts can also be bought as individual day files.
| Contract | File | Trades | Turnover | Close | |
|---|---|---|---|---|---|
| KXMLB-26-LAD | 3.27 MB | 787 | $22.0K | 0.300 | buy file → |
| KXMLB-26-MIL | 2.14 MB | 399 | $3.5K | 0.132 | buy file → |
| KXMLB-26-CHC | 1.84 MB | 209 | $1.2K | 0.058 | buy file → |
| KXMLB-26-PHI | 1.65 MB | 222 | $1.6K | 0.061 | buy file → |
| KXMLB-26-TB | 1.49 MB | 57 | $705.67 | 0.081 | buy file → |
| KXMLB-26-BAL | 1.47 MB | 38 | $73.89 | 0.006 | buy file → |
| KXMLB-26-HOU | 1.38 MB | 42 | $168.4 |
Tick-by-tick trades and Level-2 order-book depth for every contract of the World Series series on Kalshi (30 contract files on the latest day). One bundle = one UTC day of the whole series.
KXMLB — 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 KXMLB-* contract that traded that UTC day.
Coverage runs March 2026 – September 2026 — 183 trading days in total.
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.
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.
€1 per series-day bundle — every contract of the series for that day, with invoice on checkout. Buy it in the Data Shop.
| Buy day → |
| 2026-08-26 | 30 | 32.4 MB | 2,518 | $21.7K | Buy day → |
| 2026-08-25 | 30 | 31.4 MB | 3,521 | $41.7K | Buy day → |
| 2026-08-24 | 30 | 12.1 MB | 4,407 | $33.1K | Buy day → |
| 2026-08-23 | 30 | 22.1 MB | 4,724 | $30.5K | Buy day → |
| 2026-08-22 | 30 | 21.5 MB | 4,020 | $38.0K | Buy day → |
| 2026-08-21 | 30 | 12.7 MB | — | — | Buy day → |
| 2026-08-20 | 30 | 17.5 MB | 2,450 | $28.9K | Buy day → |
| 0.027 |
| buy file → |
| KXMLB-26-NYY | 1.20 MB | 214 | $948.55 | 0.102 | buy file → |
| KXMLB-26-BOS | 1.14 MB | 229 | $1.4K | 0.050 | buy file → |
| KXMLB-26-ATL | 1.07 MB | 267 | $1.9K | 0.062 | buy file → |
| KXMLB-26-TOR | 868 KB | 12 | $77.23 | 0.011 | buy file → |
| KXMLB-26-TEX | 718 KB | 71 | $266.06 | 0.012 | buy file → |
| KXMLB-26-AZ | 631 KB | 77 | $205.77 | 0.008 | buy file → |
| KXMLB-26-CLE | 550 KB | 48 | $229.1 | 0.022 | buy file → |
| KXMLB-26-SEA | 513 KB | 134 | $282.72 | 0.018 | buy file → |
| KXMLB-26-CWS | 511 KB | 47 | $707.34 | 0.037 | buy file → |
| KXMLB-26-MIN | 467 KB | 14 | $25.98 | 0.002 | buy file → |
| KXMLB-26-COL | 463 KB | 3 | $2.81 | 0.001 | buy file → |
| KXMLB-26-SD | 456 KB | 114 | $341.5 | 0.013 | buy file → |
| KXMLB-26-STL | 308 KB | 25 | $42.69 | 0.002 | buy file → |
| KXMLB-26-LAA | 304 KB | 2 | $3.28 | 0.001 | buy file → |
| KXMLB-26-DET | 272 KB | 2 | $0.02 | 0.001 | buy file → |
| KXMLB-26-PIT | 110 KB | 45 | $22.89 | 0.001 | buy file → |
| KXMLB-26-CIN | 61.2 KB | 0 | $0 | 0.001 | buy file → |