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kalshi historical data / entertainment / KXHEADLINE
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who will headline event, tick by tick.
Kalshi series KXHEADLINE: order book and trades, 2026-09-27 → 2026-10-22.

The order-book and trade history of Kalshi's who will headline event 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.

26 days2026-09-27 → 2026-10-22 · every day since its first · ~6 MB per day · 149 MB on disk · 94 open markets
pull KXHEADLINE days →schemapricing

What a KXHEADLINE day contains

Four parquet files per day, every market of the series in each. Sizes are this series' own averages over its 26 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.

~1 MB per KXHEADLINE 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.

~4 MB per KXHEADLINE day
Tradeskalshi_trades

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

~15 kB per KXHEADLINE 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.

~891 kB per KXHEADLINE day

KXHEADLINE 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.

Will Billie Eilish be a headliner at Boston Calling Music Festival 2027?: Billie EilishKXHEADLINE-BOS27DEC31-BILcloses 2027-12-31 04:59 UTC
Will The Black Keys be a headliner at Boston Calling Music Festival 2027?: The Black KeysKXHEADLINE-BOS27DEC31-BLAcloses 2027-12-31 04:59 UTC
Will Blink-182 be a headliner at Boston Calling Music Festival 2027?: Blink-182KXHEADLINE-BOS27DEC31-BLIcloses 2027-12-31 04:59 UTC
Will Boygenius be a headliner at Boston Calling Music Festival 2027?: BoygeniusKXHEADLINE-BOS27DEC31-BOYcloses 2027-12-31 04:59 UTC
Will Cage the Elephant be a headliner at Boston Calling Music Festival 2027?: Cage the ElephantKXHEADLINE-BOS27DEC31-CAGcloses 2027-12-31 04:59 UTC
Will Chappell Roan be a headliner at Boston Calling Music Festival 2027?: Chappell RoanKXHEADLINE-BOS27DEC31-CHAcloses 2027-12-31 04:59 UTC
Will Dua Lipa be a headliner at Boston Calling Music Festival 2027?: Dua LipaKXHEADLINE-BOS27DEC31-DUAcloses 2027-12-31 04:59 UTC
Will Fall Out Boy be a headliner at Boston Calling Music Festival 2027?: Fall Out BoyKXHEADLINE-BOS27DEC31-FALcloses 2027-12-31 04:59 UTC
Will Glass Animals be a headliner at Boston Calling Music Festival 2027?: Glass AnimalsKXHEADLINE-BOS27DEC31-GLAcloses 2027-12-31 04:59 UTC
Will Green Day be a headliner at Boston Calling Music Festival 2027?: Green DayKXHEADLINE-BOS27DEC31-GREcloses 2027-12-31 04:59 UTC
Will Jack Harlow be a headliner at Boston Calling Music Festival 2027?: Jack HarlowKXHEADLINE-BOS27DEC31-JACcloses 2027-12-31 04:59 UTC
Will Kacey Musgraves be a headliner at Boston Calling Music Festival 2027?: Kacey MusgravesKXHEADLINE-BOS27DEC31-KACcloses 2027-12-31 04:59 UTC

Coverage notes for KXHEADLINE

  • 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 KXHEADLINE 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 KXHEADLINE-.
  • 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 KXHEADLINE, every table, is about 172 MB. Bought for Kalshi, Starter ($29/mo) carries top of book, trades and the ticker for every series plus one series of your choice, KXHEADLINE 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: KXHEADLINE at full depth →L10: every series at 10 levelsL25: every series, 25 levelsfree sample day

Other entertainment series on Kalshi

who will be featured on albumRotten Tomatoes ScoresHighest daily view count this weekWHO WILL RELEASE A NEW ALBUMHow many album equivalent will album sellWHO WILL BE PLAYING WHAT IN AVENGERS DOOMSDAYArtist Yearly Streamshow many weeks will album be number 1highest daily views in time periodWHO WILL HEADLINE COACHELLA?how many streams will album haveNetflix movie rankingWho will headline the Super Bowl halftime show?who will win VMA awardNext Bond actorWILL ARTIST HAVE A NUMBER ONE SONG ON BILLBOARD HOT 100 THIS YEAROscar nominations for Best PictureSexiest Man AliveCMA AwardBig Brother Rank… the whole venue