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kalshi historical data / elections / KXOHACTONBROWN
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Ohio: Acton vs. Brown margin, tick by tick.
Kalshi series KXOHACTONBROWN: order book and trades, 2026-10-01 → 2026-10-23.

The order-book and trade history of Kalshi's Ohio: Acton vs. Brown margin 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.

23 days2026-10-01 → 2026-10-23 · every day since its first · ~529 kB per day · 12 MB on disk · 8 open markets
pull KXOHACTONBROWN days →schemapricing

What a KXOHACTONBROWN day contains

Four parquet files per day, every market of the series in each. Sizes are this series' own averages over its 23 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.

~33 kB per KXOHACTONBROWN 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.

~454 kB per KXOHACTONBROWN day
Tradeskalshi_trades

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

~5 kB per KXOHACTONBROWN 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.

~37 kB per KXOHACTONBROWN day

KXOHACTONBROWN markets

The 8 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.

Will Amy Acton's governor margin minus Sherrod Brown's Senate margin be at least 9 percentage points in the November 3, 2026 general election?: Acton by 9+KXOHACTONBROWN-26DEC07-AL9closes 2026-12-07 14:59 UTC
Will Sherrod Brown's Senate margin minus Amy Acton's governor margin be between 0.01 and 3 percentage points in the November 3, 2026 general election?: Brown by 0-3KXOHACTONBROWN-26DEC07-R-2.99closes 2026-12-07 14:59 UTC
Will Sherrod Brown's Senate margin minus Amy Acton's governor margin be at least 9 percentage points in the November 3, 2026 general election?: Brown by 9+KXOHACTONBROWN-26DEC07-R-200closes 2026-12-07 14:59 UTC
Will Sherrod Brown's Senate margin minus Amy Acton's governor margin be between 3 and 6 percentage points in the November 3, 2026 general election?: Brown by 3-6KXOHACTONBROWN-26DEC07-R-5.99closes 2026-12-07 14:59 UTC
Will Sherrod Brown's Senate margin minus Amy Acton's governor margin be between 6 and 9 percentage points in the November 3, 2026 general election?: Brown by 6-9KXOHACTONBROWN-26DEC07-R-8.99closes 2026-12-07 14:59 UTC
Will Amy Acton's governor margin minus Sherrod Brown's Senate margin be between 0 and 3 percentage points in the November 3, 2026 general election?: Acton by 0-3KXOHACTONBROWN-26DEC07-R0closes 2026-12-07 14:59 UTC
Will Amy Acton's governor margin minus Sherrod Brown's Senate margin be between 3 and 6 percentage points in the November 3, 2026 general election?: Acton by 3-6KXOHACTONBROWN-26DEC07-R3closes 2026-12-07 14:59 UTC
Will Amy Acton's governor margin minus Sherrod Brown's Senate margin be between 6 and 9 percentage points in the November 3, 2026 general election?: Acton by 6-9KXOHACTONBROWN-26DEC07-R6closes 2026-12-07 14:59 UTC

Coverage notes for KXOHACTONBROWN

  • First day on disk: 2026-10-01. The series' first book appeared then. New days are added daily.
  • Trades before 2026-09-27. Kalshi's historical API has no tick-level order book, so earlier KXOHACTONBROWN 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 KXOHACTONBROWN-.
  • 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 KXOHACTONBROWN, every table, is about 15 MB. Bought for Kalshi, Starter ($29/mo) carries top of book, trades and the ticker for every series plus one series of your choice, KXOHACTONBROWN 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: KXOHACTONBROWN at full depth →L10: every series at 10 levelsL25: every series, 25 levelsfree sample day

Other elections series on Kalshi

House Race Winner?Midterm margin of victoryVote percentages in US general electionsMichigan Senate-Governor ComboMidterm Voter TurnoutHow many seats will party win in state?2028 D runningWorld leaders out this year?Who will win the Vancouver mayoral election?State legislature winnersWhich state ballot measures will pass?Democratic Primary winner2028 R runningDemocratic VP nomCounty vote percentagesDemocratic House seatsGeneral election county winnersclosest governor's raceMinnesota GovernorRepublican house seats… the whole venue