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kalshi historical data / sports / KXSERIECSPREAD
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Spread, tick by tick.
Kalshi series KXSERIECSPREAD: order book and trades, 2026-09-27 → 2026-10-23.

The order-book and trade history of Kalshi's Spread series (a one-off event): top of book on every change, the 25-level book on every change in YES terms, every trade with the taker's side, and Kalshi's own ticker, with exchange timestamps to the millisecond. Captured by us from Kalshi's websocket on two independent legs and checked against the exchange's own book snapshots.

18 days2026-09-27 → 2026-10-23 · 9 of 27 days without a book · ~3 MB per day · 57 MB on disk · 20 open markets
pull KXSERIECSPREAD days →schemapricing

What a KXSERIECSPREAD day contains

Four parquet files per day, every market of the series in each. Sizes are this series' own averages over its 18 days on disk.

Top of book (every change)kalshi_l1

Best YES bid and ask with sizes and the spread, one row whenever either changed, derived tick by tick from the rebuilt book: not Kalshi's conflated ticker.

~289 kB per KXSERIECSPREAD day
Order book, 25 levels, every changekalshi_l2

The whole ladder after every book event, in YES terms (the NO bids become the asks, at their sizes), 25 levels a side: wide columns bid_px_1 … ask_sz_25, plus the exchange's own hourly snapshots. Each row is self-contained, so you can start reading mid-day.

~3 MB per KXSERIECSPREAD day
Tradeskalshi_trades

Every trade: YES and NO price, size in contracts, the taker's side, block-trade flag, trade id.

~27 kB per KXSERIECSPREAD day
Kalshi ticker (~1 s)kalshi_ticker

Kalshi's own ticker feed, about one update a second per market: last price, YES bid/ask with sizes, cumulative volume and open interest in contracts and dollars.

~210 kB per KXSERIECSPREAD day

KXSERIECSPREAD markets

The 12 closing nearest to now, from Kalshi's daily market list. Each is a row key (market_ticker) in every table, captured from the day it opens until it settles.

Altamura wins by more than 1.5 goals?: Altamura wins by more than 1.5 goalsKXSERIECSPREAD-26OCT23ALTPOT-ALT2closes 2026-10-25 18:30 UTC
Altamura wins by more than 2.5 goals?: Altamura wins by more than 2.5 goalsKXSERIECSPREAD-26OCT23ALTPOT-ALT3closes 2026-10-25 18:30 UTC
Potenza wins by more than 1.5 goals?: Potenza wins by more than 1.5 goalsKXSERIECSPREAD-26OCT23ALTPOT-POT2closes 2026-10-25 18:30 UTC
Potenza wins by more than 2.5 goals?: Potenza wins by more than 2.5 goalsKXSERIECSPREAD-26OCT23ALTPOT-POT3closes 2026-10-25 18:30 UTC
Bari wins by more than 1.5 goals?: Bari wins by more than 1.5 goalsKXSERIECSPREAD-26OCT23CFCBAR-BAR2closes 2026-10-25 18:30 UTC
Bari wins by more than 2.5 goals?: Bari wins by more than 2.5 goalsKXSERIECSPREAD-26OCT23CFCBAR-BAR3closes 2026-10-25 18:30 UTC
Casertana wins by more than 1.5 goals?: Casertana wins by more than 1.5 goalsKXSERIECSPREAD-26OCT23CFCBAR-CFC2closes 2026-10-25 18:30 UTC
Casertana wins by more than 2.5 goals?: Casertana wins by more than 2.5 goalsKXSERIECSPREAD-26OCT23CFCBAR-CFC3closes 2026-10-25 18:30 UTC
Ostia wins by more than 1.5 goals?: Ostia wins by more than 1.5 goalsKXSERIECSPREAD-26OCT23OSTVAD-OST2closes 2026-10-25 18:30 UTC
Ostia wins by more than 2.5 goals?: Ostia wins by more than 2.5 goalsKXSERIECSPREAD-26OCT23OSTVAD-OST3closes 2026-10-25 18:30 UTC
Vado wins by more than 1.5 goals?: Vado wins by more than 1.5 goalsKXSERIECSPREAD-26OCT23OSTVAD-VAD2closes 2026-10-25 18:30 UTC
Vado wins by more than 2.5 goals?: Vado wins by more than 2.5 goalsKXSERIECSPREAD-26OCT23OSTVAD-VAD3closes 2026-10-25 18:30 UTC

Coverage notes for KXSERIECSPREAD

  • First day on disk: 2026-09-27. That is the day our Kalshi capture began, not the series' launch. New days are added daily.
  • Trades before 2026-09-27. Kalshi's historical API has no tick-level order book, so earlier KXSERIECSPREAD trades are in the whole-exchange trades history (from 2021-06-30, one file a day): filter market_ticker to this series' markets, which start with KXSERIECSPREAD-.
  • The first day starts at 11:00 UTC. Our capture began at 11:00 UTC on 27 September 2026: 13 hours that day, not 24, and no CF Benchmarks index file (that capture starts on the 28th).
  • A book-quality dip on 2026-09-29. During a pipeline cutover 10,255 exchange snapshots disagreed with the rebuilt book (41 to 1,378 on every other day) and 16,678 negative levels were clamped to zero. The book resynchronises at every exchange snapshot; trades and ticker are unaffected.
  • Every bundle ships a README with the schemas and, per day, how often the rebuilt book matched the exchange's own snapshots, for your exact range.

Pricing

A month of KXSERIECSPREAD, every table, is about 95 MB. Bought for Kalshi, Starter ($29/mo) carries top of book, trades and the ticker for every series plus one series of your choice, KXSERIECSPREAD if you like, at full book depth; L10 ($49/mo) carries every series' book at 10 levels and L25 ($99/mo) the full 25-level book. Each includes 7 days before you join and every day after. Any free account can pull 2026-10-07, any series, up to 1.0 GB.

Starter: KXSERIECSPREAD at full depth →L10: every series at 10 levelsL25: every series, 25 levelsfree sample day

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