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

The order-book and trade history of Kalshi's NPB Champion series (new markets on an irregular schedule, one event per game, match or release): 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.

27 days2026-09-27 → 2026-10-23 · every day since its first · ~2 MB per day · 59 MB on disk · 12 open markets
pull KXNPB days →schemapricing

What a KXNPB day contains

Four parquet files per day, every market of the series in each. Sizes are this series' own averages over its 27 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.

~162 kB per KXNPB 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.

~2 MB per KXNPB day
Tradeskalshi_trades

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

~12 kB per KXNPB 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.

~130 kB per KXNPB day

KXNPB 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 Chiba Lotte Marines win the Japan NPB?: Chiba Lotte MarinesKXNPB-26-CHIcloses 2026-12-15 15:00 UTC
Will Chunichi Dragons win the Japan NPB?: Chunichi DragonsKXNPB-26-CHUcloses 2026-12-15 15:00 UTC
Will Fukuoka Hawks win the Japan NPB?: Fukuoka HawksKXNPB-26-FUKcloses 2026-12-15 15:00 UTC
Will Hanshin Tigers win the Japan NPB?: Hanshin TigersKXNPB-26-HANcloses 2026-12-15 15:00 UTC
Will Hiroshima Toyo Carp win the Japan NPB?: Hiroshima Toyo CarpKXNPB-26-HIRcloses 2026-12-15 15:00 UTC
Will Hokkaido Nippon-Ham Fighters win the Japan NPB?: Hokkaido Nippon-Ham FightersKXNPB-26-HOKcloses 2026-12-15 15:00 UTC
Will Orix Buffaloes win the Japan NPB?: Orix BuffaloesKXNPB-26-ORIcloses 2026-12-15 15:00 UTC
Will Saitama Seibu Lions win the Japan NPB?: Saitama Seibu LionsKXNPB-26-SAIcloses 2026-12-15 15:00 UTC
Will Tohoku Rakuten Golden Eagles win the Japan NPB?: Tohoku Rakuten Golden EaglesKXNPB-26-TOHcloses 2026-12-15 15:00 UTC
Will Tokyo Yakult Swallows win the Japan NPB?: Tokyo Yakult SwallowsKXNPB-26-YAKcloses 2026-12-15 15:00 UTC
Will Yokohama DeNA BayStars win the Japan NPB?: Yokohama DeNA BayStarsKXNPB-26-YOKcloses 2026-12-15 15:00 UTC
Will Yomiuri Giants win the Japan NPB?: Yomiuri GiantsKXNPB-26-YOMcloses 2026-12-15 15:00 UTC

Coverage notes for KXNPB

  • 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 KXNPB 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 KXNPB-.
  • 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 KXNPB, every table, is about 65 MB. Bought for Kalshi, Starter ($29/mo) carries top of book, trades and the ticker for every series plus one series of your choice, KXNPB 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: KXNPB at full depth →L10: every series at 10 levelsL25: every series, 25 levelsfree sample day

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