Kalshi KXNPBRFI — First Inning Run Data
Every Kalshi “First Inning Run” contract of the day — every trade print and the complete Level-2 book, captured co-located with nanosecond venue and receive timestamps. 102 trading days as day bundles, €1 per day, bought as a guest with instant download. First Inning Run is a season market — days exist when NPB plays, and coverage continues when the league trades again.
First Inning Run on Kalshi — activity
Trades and USD turnover summed over every contract of the series across 13 captured days to 2026-10-28, from the recorded tick data — the per-day averages divide by the captured days. Buy share, quoted spread (in contract price cents, 0..1 = 100 ¢), best-bid/ask depth and Level-2 update counts are turnover-weighted over the same window.
One purchase, the whole series for a day
A series-day bundle contains every First Inning Run contract that was listed on Kalshi on that UTC day — traded or not — 1 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 July 2026 – present — 102 trading days, 244 MB compressed in total. A day typically holds 15 contract files (up to 25 on the busiest day, 16.1 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.
First Inning Run — development since capture
9,264 trades and $120.1K of USD turnover over 34 captured days since 2026-09-22 — record day 2026-09-22 with $12.1K, biggest single contract KXNPBRFI-26OCT020500FUKCHI-Y (FUKCHI · 2026-10-02 09:00 UTC · Y) (2026-10-02, $6.4K).
| Month | Days | Trades | Turnover (USD) | Avg / day | Contracts traded | L2 updates | vs previous month |
|---|---|---|---|---|---|---|---|
| Oct 2026 | 25 | 4,605 | $61.5K | $2.5K | 45 | 709.1K | +5.0 % |
| Sep 2026 | 9 | 4,659 | $58.6K | $6.5K | 47 | 497.9K | — |
Kalshi First Inning Run — trades and USD turnover summed per calendar month (UTC) over every contract, from our own daily statistics of the recorded tick data. Days = captured UTC days; a partial month shows no month-over-month change. Contracts traded and L2 (order-book) updates exist for days captured with the extended statistics.
NPB markets on other prediction venues
Polymarket also lists NPB event markets — the same 30-day statistics side by side, each a day bundle of its own.
| Venue · series | Trades (30d) | Turnover (30d) | Avg spread | Top-1 depth | L2 updates / trade | Days archived | Price / day |
|---|---|---|---|---|---|---|---|
| Kalshi · First Inning Run (this page) | 1,945 | $20.5K | 14.8 ¢ | $355.01 | 116.0 | 102 | €1 |
| Polymarket · NPB Baseball (games & props) | 1,210 | $80.2K | 10.9 ¢ | $1.2K | 4849.0 | 127 | €1 |
30-day window of the statistics table, per venue's own series; spread in contract-price cents and best-bid/ask depth are turnover-weighted, L2 updates per trade = recorded order-book level updates ÷ trades. "—" = no statistics row in the window. Each venue settles its own contracts on its own rules — the series are comparable in subject, not interchangeable.
First Inning Run — activity by weekday
Fridays carry the most turnover, about $3.1K per day.
| Weekday (UTC) | Avg turnover / day | USD | Avg trades | Days |
|---|---|---|---|---|
| Monday | $0 | 0 | 1 | |
| Tuesday | $129.82 | 50.5 | 2 | |
| Wednesday | $2.2K | 175.33 | 3 | |
| Thursday | $974.61 | 114 | 2 | |
| Friday | $3.1K | 250 | 2 | |
| Saturday | $2.3K | 178 | 2 | |
| Sunday | $988.23 | 234 | 1 |
Kalshi First Inning Run — average USD turnover and trades per weekday over the captured days of the last 30, from our own daily statistics; weekdays without a captured day show —.
First Inning Run — last 30 days in the archive
Files, size, contracts traded, trades, USD turnover, buy share, quoted spread, top-of-book depth and order-book updates per UTC day, from the recorded tick data.
| UTC day | Files | Size | Traded | Trades | Turnover | Buy share | Avg spread | Top-1 depth | L2 updates | Notes | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-10-28 | 1 | 1.08 MB | 1 | 260 | $3.1K | 31 % | 35.8 ¢ | $174.28 | 43.6K | Buy day → | |
| 2026-10-27 | 2 | 350 KB | 1 | 98 | $256.5 | 27 % | 61.2 ¢ | $47.27 | 14.5K | Buy day → | |
| 2026-10-26 | 2 | 2.34 KB | 0 | 0 | $0 | — | — | — | 5 | Buy day → | |
| 2026-10-25 | 3 | 664 KB | 1 | 234 | $988.23 | 53 % | 34.9 ¢ | $38.5 | 25.9K | Buy day → | |
| 2026-10-24 | 3 | 403 KB | 1 | 233 | $1.9K | 61 % | 12.7 ¢ | $89.92 | 15.5K | Buy day → | |
| 2026-10-23 | 2 | 3.86 KB | 0 | 0 | $0 | — | — | — | 27 | Buy day → | |
| 2026-10-22 | 2 | 2.39 KB | 0 | 0 | $0 | — | — | — | 4 | Buy day → | |
| 2026-10-21 | 1 | 1.46 KB | 0 | 0 | $0 | — | — | — | 4 | Buy day → | |
| 2026-10-17 | 1 | 313 KB | 1 | 123 | $2.8K | 74 % | 6.81 ¢ | $409.65 | 12.1K | Buy day → | |
| 2026-10-16 | 3 | 1.46 MB | 2 | 500 | $6.2K | 51 % | 9.34 ¢ | $508.47 | 60.5K | Buy day → | |
| 2026-10-15 | 5 | 244 KB | 2 | 228 | $1.9K | 37 % | 9.84 ¢ | $343.85 | 8.5K | Buy day → | |
| 2026-10-14 | 7 | 420 KB | 4 | 266 | $3.4K | 56 % | 6.95 ¢ | $457.71 | 15.6K | Buy day → | |
| 2026-10-13 | 6 | 710 KB | 2 | 3 | $3.14 | 92 % | 72.4 ¢ | $19.57 | 29.3K | Buy day → | |
| 2026-10-12 | 5 | 1.69 MB | 1 | 171 | $3.7K | 10 % | 7.73 ¢ | $224.7 | 74.7K | Buy day → | |
| 2026-10-11 | 4 | 441 KB | 3 | 215 | $2.5K | 90 % | 6.19 ¢ | $102.93 | 17.2K | Buy day → | |
| 2026-10-10 | 4 | 355 KB | 2 | 212 | $3.0K | 72 % | 12.9 ¢ | $325.99 | 13.3K | Buy day → | |
| 2026-10-09 | 4 | 590 KB | 1 | 2 | $11.87 | 0 % | 40.2 ¢ | $35.08 | 23.5K | Buy day → | |
| 2026-10-08 | 4 | 3.66 KB | 0 | 0 | $0 | — | — | — | 0 | Buy day → | |
| 2026-10-07 | 3 | 1.79 MB | 1 | 163 | $2.3K | 38 % | 7.46 ¢ | $121.08 | 79.3K | Buy day → | |
| 2026-10-06 | 3 | 2.15 MB | 2 | 196 | $4.3K | 55 % | 8.18 ¢ | $269.38 | 94.7K | Buy day → | |
| 2026-10-05 | 5 | 430 KB | 3 | 258 | $2.3K | 59 % | 7.93 ¢ | $326.68 | 15.8K | Buy day → | |
| 2026-10-04 | 8 | 1.29 MB | 4 | 281 | $5.4K | 45 % | 9.69 ¢ | $410.23 | 55.6K | Buy day → | |
| 2026-10-03 | 11 | 973 KB | 5 | 391 | $6.5K | 46 % | 6.69 ¢ | $158.38 | 37.8K | Buy day → | |
| 2026-10-02 | 11 | 1.42 MB | 3 | 454 | $7.9K | 69 % | 6.05 ¢ | $286.81 | 58.0K | Buy day → | |
| 2026-10-01 | 16 | 400 KB | 5 | 317 | $3.1K | 70 % | 8.50 ¢ | $185.81 | 13.7K | Buy day → | |
| 2026-09-30 | 15 | 1.16 MB | 3 | 232 | $1.3K | 29 % | 6.78 ¢ | $214.01 | 46.4K | Buy day → | |
| 2026-09-29 | 14 | 1.15 MB | 5 | 319 | $4.7K | 63 % | 10.6 ¢ | $225.07 | 45.7K | Buy day → | |
| 2026-09-28 | 15 | 1.82 MB | 3 | 329 | $4.8K | 69 % | 7.63 ¢ | $279.59 | 75.0K | Buy day → | |
| 2026-09-27 | 16 | 1.37 MB | 7 | 604 | $8.9K | 51 % | 29.5 ¢ | $1.2K | 52.4K | Buy day → | |
| 2026-09-26 | 19 | 884 KB | 5 | 556 | $8.3K | 31 % | 17.6 ¢ | $712.49 | 30.2K | Buy day → |
Traded = contracts with at least one trade that day. Buy share = taker-buy side of USD turnover. Avg spread = quoted bid-ask spread in contract price cents (0..1 = 100 ¢), weighted by turnover across the day’s contracts. Top-1 depth = mean of the best bid and best ask notional in USD, weighted by turnover. L2 updates = order-book level updates recorded across all contracts of the day. Days captured before the extended statistics show —.
Most traded First Inning Run contracts by day
The ten contracts with the most USD turnover per UTC day — open, high, low, close, VWAP and the outcome implied by the last print; the six previous days fold out below.
The 1 most traded First Inning Run contracts on 2026-10-28 — 1 closed Yes (≥ 0.97), 0 closed No (≤ 0.03): 260 trades, $3.1K USD turnover. The busiest contract was KXNPBRFI-26OCT280500YOKFUK-Y with $3.1K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXNPBRFI-26OCT280500YOKFUK-Y Y vs OKFUK · 2026-10-28 09:00 UTC · Y | 2026-10-28 09:26 | 0.370 | 0.990 | 0.260 | 0.990 | 0.402 | Yes | 260 | $3.1K | 31 % | 35.8 ¢ | $174.28 | 43.6K | buy file → |
Prices quote 0..1 (probability of Yes). Open/high/low/close/VWAP are that UTC day’s trade prints per contract; the implied outcome reads the last print — ≥ 0.97 as Yes, ≤ 0.03 as No, anything between as still open — venues publish the official result. Buy share = taker-buy side of turnover; spread = the contract's turnover-weighted quoted bid-ask spread in cents, top-1 depth = mean best-bid/ask notional per side, L2 updates = order-book level updates recorded for the contract that day. “Settles” is the venue-listed close time of the contract where the venue publishes one (UTC).
2026-10-27 — 1 contract, 98 trades, $256.5 turnover
The 1 most traded First Inning Run contracts on 2026-10-27 — 0 closed Yes (≥ 0.97), 1 closed No (≤ 0.03): 98 trades, $256.5 USD turnover. The busiest contract was KXNPBRFI-26OCT270500YOKFUK-Y with $256.5 turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXNPBRFI-26OCT270500YOKFUK-Y Y vs OKFUK · 2026-10-27 09:00 UTC · Y | 2026-10-27 09:26 | 0.950 | 0.950 | 0.010 | 0.010 | 0.257 | No | 98 | $256.5 | 27 % | 61.2 ¢ | $47.27 | 14.5K | buy file → |
2026-10-25 — 1 contract, 234 trades, $988.23 turnover
The 1 most traded First Inning Run contracts on 2026-10-25 — 0 closed Yes (≥ 0.97), 1 closed No (≤ 0.03): 234 trades, $988.23 USD turnover. The busiest contract was KXNPBRFI-26OCT250500FUKYOK-Y with $988.23 turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXNPBRFI-26OCT250500FUKYOK-Y FUKYOK · 2026-10-25 09:00 UTC · Y | 2026-10-25 09:21 | 0.350 | 0.940 | 0.010 | 0.010 | 0.387 | No | 234 | $988.23 | 53 % | 34.9 ¢ | $38.5 | 25.9K | buy file → |
2026-10-24 — 1 contract, 233 trades, $1.9K turnover
The 1 most traded First Inning Run contracts on 2026-10-24 — 0 closed Yes (≥ 0.97), 1 closed No (≤ 0.03): 233 trades, $1.9K USD turnover. The busiest contract was KXNPBRFI-26OCT240530FUKYOK-Y with $1.9K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXNPBRFI-26OCT240530FUKYOK-Y FUKYOK · 2026-10-24 09:30 UTC · Y | 2026-10-24 10:10 | 0.450 | 0.720 | 0.010 | 0.010 | 0.409 | No | 233 | $1.9K | 61 % | 12.7 ¢ | $89.92 | 15.5K | buy file → |
2026-10-17 — 1 contract, 123 trades, $2.8K turnover
The 1 most traded First Inning Run contracts on 2026-10-17 — 1 closed Yes (≥ 0.97), 0 closed No (≤ 0.03): 123 trades, $2.8K USD turnover. The busiest contract was KXNPBRFI-26OCT170100YOKHAN-Y with $2.8K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXNPBRFI-26OCT170100YOKHAN-Y Y vs OKHAN · 2026-10-17 05:00 UTC · Y | 2026-10-17 05:26 | 0.320 | 0.990 | 0.260 | 0.990 | 0.645 | Yes | 123 | $2.8K | 74 % | 6.81 ¢ | $409.65 | 12.1K | buy file → |
2026-10-16 — 2 contracts, 500 trades, $6.2K turnover
The 2 most traded First Inning Run contracts on 2026-10-16 — 1 closed Yes (≥ 0.97), 1 closed No (≤ 0.03): 500 trades, $6.2K USD turnover. The busiest contract was KXNPBRFI-26OCT160500HOKFUK-Y with $4.9K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXNPBRFI-26OCT160500HOKFUK-Y HOKFUK · 2026-10-16 09:00 UTC · Y | 2026-10-16 09:21 | 0.470 | 0.990 | 0.280 | 0.990 | 0.552 | Yes | 275 | $4.9K | 50 % | 9.33 ¢ | $629.41 | 8.7K | buy file → |
| KXNPBRFI-26OCT160500YOKHAN-Y Y vs OKHAN · 2026-10-16 09:00 UTC · Y | 2026-10-16 09:25 | 0.460 | 0.750 | 0.010 | 0.010 | 0.305 | No | 225 | $1.3K | 52 % | 9.38 ¢ | $71.55 | 51.3K | buy file → |
2026-10-15 — 2 contracts, 228 trades, $1.9K turnover
The 2 most traded First Inning Run contracts on 2026-10-15 — 1 closed Yes (≥ 0.97), 1 closed No (≤ 0.03): 228 trades, $1.9K USD turnover. The busiest contract was KXNPBRFI-26OCT150500HOKFUK-Y with $1.3K turnover.
| Contract | Settles (UTC) | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | Spread | Top-1 depth | L2 updates | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KXNPBRFI-26OCT150500HOKFUK-Y HOKFUK · 2026-10-15 09:00 UTC · Y | 2026-10-15 09:35 | 0.420 | 0.990 | 0.250 | 0.990 | 0.564 | Yes | 108 | $1.3K | 49 % | 9.84 ¢ | $442.17 | 1.3K | buy file → |
| KXNPBRFI-26OCT150500YOKHAN-Y Y vs OKHAN · 2026-10-15 09:00 UTC · Y | 2026-10-15 09:25 | 0.470 | 0.740 | 0.010 | 0.010 | 0.293 | No | 120 | $681.94 | 17 % | 9.83 ¢ | $161.14 | 4.8K | buy file → |
NPB on Kalshi — market types across the series
Across 5 NPB series on Kalshi, 5,314 contracts have been listed as of 2026-11-11: moneyline / winner 1,810 · spread / handicap 1,552 · total / over-under 1,552 · other 400. Counted from every contract file of the family, not from the traded top-10.
| Market type | Contracts listed (all time) | Listed last 30 days | Share |
|---|---|---|---|
| moneyline / winner | 1,810 | 24 | 34 % |
| spread / handicap | 1,552 | 48 | 29 % |
| total / over-under | 1,552 | 48 | 29 % |
| other | 400 | 24 | 8 % |
| Total | 5,314 | 144 | 100 % |
Kalshi NPB series— market type read from each contract's venue identifier (ticker suffix on Kalshi, slug suffix on Polymarket, market description on predict.fun and OG.com), counted over every contract listed in the family as of 2026-11-11; “listed last 30 days” counts contracts whose venue settlement time falls in that window. Every one of them is in the day bundle of its day.
How a First Inning Run contract trades
On Kalshi, a First Inning Run contract trades for about 3.2 days from open to close, is listed roughly 10 min before it opens, and quotes in 1 ¢ price steps (0..1). Measured on the 1 contracts captured on 2026-10-28.
Build a First Inning Run model on this data
Every settled First Inning Run contract is a labelled example: the winner, the line or the total that cleared is the label, and the day bundle holds each contract's full order-book path and trade tape, nanosecond-stamped, from the first quote days before the event to the last print — the features for that label. The statistics on this page cover the most traded contracts per day; the bundle holds every contract listed on Kalshi that day.
Split by season and match day, never at random — the contracts of one slate share injuries, weather and the same public money, and a random split leaks the slate's results into training; walk forward over game days and purge the days whose contracts were still open. The sports-model guide works the closing-line benchmark, the pre-game line path and that split through.
Purchased data is for your own use — backtesting, research, analytics and training your own models, in-house or in your own products; the trained models and derived data you build from it are yours. The raw files and tick streams themselves may not be redistributed, resold or published. The full terms are on the data license page.
Why buy Kalshi First Inning Run data here
Four things every page on this site is built on — and the reason the numbers above exist at all.
We record everything
The complete public feed of each venue as it was published: every Level-2 snapshot and update at the venue's full book depth, every trade with its aggressor side, every quote, funding, mark-price and liquidation event — for every instrument the venue lists, every UTC day since we added the venue. Nothing sampled, no top-N cut, no on-demand capture.
Institutional grade
Captured co-located at the venue with the exchange timestamp and our receive timestamp in integer nanoseconds, an event-id chain that makes any gap visible, and one normalized schema across 35+ venues — the same capture our own high-frequency trading engine and enterprise feeds run on.
€1 per instrument-day
Any instrument-day is €1, series-day bundles start at €1 — no subscription, no minimum order, no tiers to unlock. Credit packs lower the effective price and never expire, and free full-day samples from the major venues let you test first.
Self-service for everyone
Pick the days in the Data Shop, pay by card as a guest and download immediately — no sales call, no enterprise contract, no KYC. Coding agents buy the same files through the MCP server, and the free Agent Skill teaches them the format.
Agents: /llms.txt · MCP server /mcp · every page as markdown via Accept: text/markdown
Kalshi First Inning Run data — FAQ
What Kalshi First Inning Run data can I download?
Tick-by-tick trades and Level-2 order-book depth for every contract of the First Inning Run series on Kalshi (1 contract files on the latest day). One bundle = one UTC day of the whole series.
What is the Kalshi series ticker for First Inning Run?
KXNPBRFI — 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 KXNPBRFI-* contract listed that UTC day.
How far back does the First Inning Run data go?
Coverage runs July 2026 – present — 102 trading days in total. First Inning Run is a season market: days exist when NPB plays, and coverage continues when the league trades again.
What format are the Kalshi files in?
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.
Can I get Kalshi First Inning Run data as CSV or Parquet?
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.
How much does Kalshi First Inning Run historical data cost?
€1 per series-day bundle — every contract of the series for that day — no subscription, no minimum order; buy as a guest in the Data Shop and download immediately. Credit packs lower the effective price and never expire.
Do I need an account or a sales call?
No. Pick the First Inning Run series-days in the Data Shop, pay by card as a guest and download immediately — no subscription, no minimum order, no KYC, no enterprise contract, no sales call. Coding agents buy the same bundles through the MCP server.
How is the Kalshi First Inning Run data captured?
Co-located at the venue, message by message: every Level-2 update and every trade print carries the exchange timestamp and our receive timestamp in integer nanoseconds, an event-id chain makes any gap visible, and one normalized schema across 35+ venues means a parser written for Binance reads these files unchanged. It is the same capture our own high-frequency trading engine runs on — nothing sampled, no top-N cut.
How many First Inning Run contracts trade per day on Kalshi?
On average 1 First Inning Run contracts had at least one trade per UTC day over the last 13 captured days on Kalshi, with about 17.3K order-book level updates recorded per day. A day bundle contains every contract file of the series for that day.
How liquid are Kalshi First Inning Run contracts?
Over the last 13 captured days, the turnover-weighted quoted bid-ask spread was 14.8 ¢ (contracts quote 0..1 = 100 ¢), the mean best-bid/best-ask notional was about $355.01 per side, 51 % of USD turnover was taker-buy. These figures are computed from the recorded Level-2 order books and trade prints — the same data in the day bundles.
What was the most traded First Inning Run contract on 2026-10-28?
KXNPBRFI-26OCT280500YOKFUK-Y (Y vs OKFUK · 2026-10-28 09:00 UTC · Y) — $3.1K USD turnover over 260 trades on Kalshi. The 1 most traded contracts of the series did 260 trades and $3.1K that UTC day. Open, high, low, close and VWAP per contract are listed on this page; the tick-level data is in the day bundle.
What was the busiest First Inning Run trading day on Kalshi?
2026-09-22, with $12.1K of USD turnover over 820 trades across every First Inning Run contract of the day; the busiest full month was Oct 2026 at $61.5K. Since our statistics began on 2026-09-22 the series has recorded 9,264 trades and $120.1K over 34 captured days; the single biggest contract was KXNPBRFI-26OCT020500FUKCHI-Y (FUKCHI · 2026-10-02 09:00 UTC · Y) on 2026-10-02 with $6.4K. Any of these days is a downloadable bundle.
Which market types does Kalshi list for NPB?
Kalshi lists each market type as its own series — 5 NPB series with 5,314 contracts listed as of 2026-11-11: moneyline / winner 1,810 · spread / handicap 1,552 · total / over-under 1,552 · other 400. First Inning Run is one of them; a series-day bundle covers one series, so buy the same day across the sibling series you need in the shop.
Which weekday does Kalshi First Inning Run trade most?
Fridays — about $3.1K of USD turnover per Friday and 30 % of the series' turnover over the 13 captured days to 2026-10-28 on Kalshi, summed from every trade print of the series' contracts. The weekday profile on this page shows all seven days; the day bundles carry the full tape behind them.
How much of First Inning Run turnover trades on game day?
100 % — across 70 settled First Inning Run contracts between 2026-09-22 and 2026-10-28 on Kalshi, 100 % of their USD turnover printed on the UTC day the contract settled and 0 % on the days before, summed from every trade of the most traded contracts per day. The pre-event share is where line-movement features live; the day bundles hold both.
How long before an event do First Inning Run contracts trade?
A median of 1 captured trading day per contract, settlement day included — across 70 settled First Inning Run contracts to 2026-10-28 on Kalshi, counting the UTC days a contract ranked among the series' most traded. Buy those days as a range (/shop/bundles?bundle=kalshi-kxnpbrfi&d=<from>..<to>) to get the whole pre-event path of each contract.