Kalshi March Madness 1 Seeds Historical Data
Every Kalshi “March Madness 1 Seeds” contract of the day — every trade print and the complete Level-2 book, captured co-located with nanosecond venue and receive timestamps. 183 trading days as day bundles, €1 per day, bought as a guest with instant download.
March Madness 1 Seeds on Kalshi — activity
Trades and USD turnover summed over every contract of the series across 30 captured days to 2026-10-15, 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 March Madness 1 Seeds contract that was listed on Kalshi on that UTC day — traded or not — 71 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 March 2026 – present — 183 trading days, 57.7 MB compressed in total. A day typically holds 67 contract files (up to 71 on the busiest day, 1.76 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.
March Madness 1 Seeds — development since capture
69 trades and $2.2K of USD turnover over 90 captured days since 2026-07-18 — record day 2026-09-30 with $1.5K, biggest single contract KXMARMAD1SEED-27-FLA (2026-09-30, $1.5K).
| Month | Days | Trades | Turnover (USD) | Avg / day | Contracts traded | L2 updates | vs previous month |
|---|---|---|---|---|---|---|---|
| Oct 2026 (month to date) | 15 | 6 | $223.9 | $14.93 | 5 | 249.4K | — |
| Sep 2026 | 30 | 25 | $1.5K | $50.04 | 15 | 426.8K | +257.6 % |
| Aug 2026 | 31 | 34 | $419.73 | $13.54 | 17 | 122.5K | +1744.2 % |
| Jul 2026 | 14 | 4 | $22.76 | $1.63 | — | — | — |
Kalshi March Madness 1 Seeds — 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.
March Madness 1 Seeds — activity by weekday
Wednesdays carry the most turnover, about $302.3 per day.
| Weekday (UTC) | Avg turnover / day | USD | Avg trades | Days |
|---|---|---|---|---|
| Monday | $1.88 | 1 | 4 | |
| Tuesday | $5.96 | 0.5 | 4 | |
| Wednesday | $302.3 | 2.2 | 5 | |
| Thursday | $0 | 0 | 5 | |
| Friday | $42.56 | 1 | 4 | |
| Saturday | $0.14 | 0.25 | 4 | |
| Sunday | $0 | 0 | 4 |
Kalshi March Madness 1 Seeds — 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 —.
March Madness 1 Seeds — 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-10-15 | 71 | 399 KB | 0 | 0 | $0 | — | — | — | 6.5K | Buy day → | |
| 2026-10-14 | 71 | 485 KB | 2 | 2 | $53.36 | 100 % | 1.00 ¢ | $470.91 | 10.7K | Buy day → | |
| 2026-10-13 | 71 | 439 KB | 0 | 0 | $0 | — | — | — | 9.3K | Buy day → | |
| 2026-10-12 | 71 | 445 KB | 0 | 0 | $0 | — | — | — | 9.4K | Buy day → | |
| 2026-10-11 | 71 | 384 KB | 0 | 0 | $0 | — | — | — | 6.7K | Buy day → | |
| 2026-10-10 | 71 | 304 KB | 1 | 1 | $0.55 | 0 % | 15.0 ¢ | $7.06 | 4.5K | Buy day → | |
| 2026-10-09 | 71 | 462 KB | 2 | 3 | $169.99 | 100 % | 1.03 ¢ | $250.51 | 9.7K | Buy day → | |
| 2026-10-08 | 71 | 473 KB | 0 | 0 | $0 | — | — | — | 10.1K | Buy day → | |
| 2026-10-07 | 71 | 532 KB | 0 | 0 | $0 | — | — | — | 11.9K | Buy day → | |
| 2026-10-06 | 71 | 498 KB | 0 | 0 | $0 | — | — | — | 10.5K | Buy day → | |
| 2026-10-05 | 71 | 1.76 MB | 0 | 0 | $0 | — | — | — | 62.9K | Buy day → | |
| 2026-10-04 | 71 | 546 KB | 0 | 0 | $0 | — | — | — | 13.3K | Buy day → | |
| 2026-10-03 | 71 | 714 KB | 0 | 0 | $0 | — | — | — | 17.3K | Buy day → | |
| 2026-10-02 | 71 | 1.10 MB | 0 | 0 | $0 | — | — | — | 34.3K | Buy day → | |
| 2026-10-01 | 71 | 1.05 MB | 0 | 0 | $0 | — | — | — | 32.4K | Buy day → | |
| 2026-09-30 | 71 | 1.38 MB | 1 | 9 | $1.5K | 100 % | 1.05 ¢ | $452.82 | 46.6K | Buy day → | |
| 2026-09-29 | 71 | 470 KB | 0 | 0 | $0 | — | — | — | 9.7K | Buy day → | |
| 2026-09-28 | 71 | 825 KB | 4 | 4 | $7.52 | 100 % | 9.10 ¢ | $144.63 | 21.8K | Buy day → | |
| 2026-09-27 | 71 | 595 KB | 0 | 0 | $0 | — | — | — | 13.3K | Buy day → | |
| 2026-09-26 | 71 | 598 KB | 0 | 0 | $0 | — | — | — | 13.3K | Buy day → | |
| 2026-09-25 | 71 | 656 KB | 1 | 1 | $0.25 | 0 % | 29.7 ¢ | $32.23 | 13.1K | Buy day → | |
| 2026-09-24 | 71 | 607 KB | 0 | 0 | $0 | — | — | — | 12.5K | Buy day → | |
| 2026-09-23 | 71 | 1.22 MB | 0 | 0 | $0 | — | — | — | 38.8K | Buy day → | |
| 2026-09-22 | 71 | 950 KB | 1 | 2 | $23.85 | 100 % | 14.2 ¢ | $26.78 | 25.6K | Buy day → | |
| 2026-09-21 | 71 | 1.36 MB | 0 | 0 | $0 | — | — | — | 42.1K | Buy day → | |
| 2026-09-20 | 71 | 394 KB | 0 | 0 | $0 | — | — | — | 8.2K | Buy day → | |
| 2026-09-19 | 71 | 637 KB | 0 | 0 | $0 | — | — | — | 11.9K | Buy day → | |
| 2026-09-18 | 71 | 988 KB | 0 | 0 | $0 | — | — | — | 18.5K | Buy day → | |
| 2026-09-17 | 71 | 503 KB | 0 | 0 | $0 | — | — | — | 9.1K | Buy day → | |
| 2026-09-16 | 71 | 438 KB | 0 | 0 | $0 | — | — | — | 7.2K | 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 March Madness 1 Seeds 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 2 most traded March Madness 1 Seeds contracts on 2026-10-14 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 2 still open at the last print: 2 trades, $53.36 USD turnover. The busiest contract was KXMARMAD1SEED-27-FLA with $48.64 turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXMARMAD1SEED-27-FLA | 0.600 | 0.600 | 0.600 | 0.600 | 0.600 | open | 1 | $48.64 | 100 % | buy file → |
| KXMARMAD1SEED-27-UNC | 0.150 | 0.150 | 0.150 | 0.150 | 0.150 | open | 1 | $4.72 | 100 % | 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.
2026-10-10 — 1 contract, 1 trades, $0.55 turnover
The 1 most traded March Madness 1 Seeds contracts on 2026-10-10 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 1 still open at the last print: 1 trades, $0.55 USD turnover. The busiest contract was KXMARMAD1SEED-27-LOU with $0.55 turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXMARMAD1SEED-27-LOU | 0.110 | 0.110 | 0.110 | 0.110 | 0.110 | open | 1 | $0.55 | 0 % | buy file → |
2026-10-09 — 2 contracts, 3 trades, $169.99 turnover
The 2 most traded March Madness 1 Seeds contracts on 2026-10-09 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 2 still open at the last print: 3 trades, $169.99 USD turnover. The busiest contract was KXMARMAD1SEED-27-DUKE with $169.54 turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXMARMAD1SEED-27-DUKE | 0.540 | 0.540 | 0.540 | 0.540 | 0.540 | open | 2 | $169.54 | 100 % | buy file → |
| KXMARMAD1SEED-27-MICH | 0.090 | 0.090 | 0.090 | 0.090 | 0.090 | open | 1 | $0.45 | 0 % | buy file → |
2026-09-30 — 1 contract, 9 trades, $1.5K turnover
The 1 most traded March Madness 1 Seeds contracts on 2026-09-30 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 1 still open at the last print: 9 trades, $1.5K USD turnover. The busiest contract was KXMARMAD1SEED-27-FLA with $1.5K turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXMARMAD1SEED-27-FLA | 0.530 | 0.760 | 0.530 | 0.760 | 0.582 | open | 9 | $1.5K | 100 % | buy file → |
2026-09-28 — 4 contracts, 4 trades, $7.52 turnover
The 4 most traded March Madness 1 Seeds contracts on 2026-09-28 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 4 still open at the last print: 4 trades, $7.52 USD turnover. The busiest contract was KXMARMAD1SEED-27-DUKE with $2.16 turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXMARMAD1SEED-27-DUKE | 0.540 | 0.540 | 0.540 | 0.540 | 0.540 | open | 1 | $2.16 | 100 % | buy file → |
| KXMARMAD1SEED-27-FLA | 0.530 | 0.530 | 0.530 | 0.530 | 0.530 | open | 1 | $2.12 | 100 % | buy file → |
| KXMARMAD1SEED-27-ILL | 0.200 | 0.470 | 0.200 | 0.470 | 0.470 | open | 1 | $1.88 | 100 % | buy file → |
| KXMARMAD1SEED-27-CONN | 0.350 | 0.350 | 0.340 | 0.340 | 0.340 | open | 1 | $1.36 | 100 % | buy file → |
2026-09-25 — 1 contract, 1 trades, $0.25 turnover
The 1 most traded March Madness 1 Seeds contracts on 2026-09-25 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 1 still open at the last print: 1 trades, $0.25 USD turnover. The busiest contract was KXMARMAD1SEED-27-ILL with $0.25 turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXMARMAD1SEED-27-ILL | 0.200 | 0.200 | 0.200 | 0.200 | 0.200 | open | 1 | $0.25 | 0 % | buy file → |
2026-09-22 — 1 contract, 2 trades, $23.85 turnover
The 1 most traded March Madness 1 Seeds contracts on 2026-09-22 — 0 closed Yes (≥ 0.97), 0 closed No (≤ 0.03), 1 still open at the last print: 2 trades, $23.85 USD turnover. The busiest contract was KXMARMAD1SEED-27-CONN with $23.85 turnover.
| Contract | Open | High | Low | Close | VWAP | Implied outcome | Trades | Turnover | Buy share | |
|---|---|---|---|---|---|---|---|---|---|---|
| KXMARMAD1SEED-27-CONN | 0.360 | 0.360 | 0.350 | 0.350 | 0.356 | open | 2 | $23.85 | 100 % | buy file → |
How a March Madness 1 Seeds contract trades
On Kalshi, a March Madness 1 Seeds contract trades until its event settles, is listed roughly 1.7 h before it opens, and quotes in 1 ¢ price steps (0..1). Measured on the 2 contracts captured on 2026-10-14.
Try a March Madness 1 Seeds contract file for free
The busiest contract of a settled day, byte-identical to the files in the paid bundle — download the native tick file, a CSV/Parquet export, or replay its order book in the browser.
KXMARMAD1SEED-27-DUKE minute by minute — 2026-10-09
One-minute open/high/low/close, trades, USD turnover, quoted spread and top-of-book depth of the sample contract — the same 1-minute statistics every instrument’s analytics page offers.
KXMARMAD1SEED-27-DUKE traded in 2 of the day’s minutes (17:02–17:19 UTC): 2 trades, $169.54 turnover, opening at 0.540, ranging 0.540–0.540 and closing at 0.540.
| Minute (UTC) | Open | High | Low | Close | Trades | Turnover | Spread | Top-1 bid / ask |
|---|---|---|---|---|---|---|---|---|
| 17:02 | 0.540 | 0.540 | 0.540 | 0.540 | 1 | $24.22 | 1.00 ¢ | $0.02 / $542.27 |
| 17:19 | 0.540 | 0.540 | 0.540 | 0.540 | 1 | $145.32 | 1.00 ¢ | $0.02 / $485.61 |
1-minute statistics computed from the recorded ticks; minutes without a trade are omitted. Spread in contract price cents; top-1 depth = resting notional at the best bid / best ask. Every minute of every day is in the free analytics; the raw ticks are in the sample file above.
Why buy Kalshi March Madness 1 Seeds 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 every venue has free full-day samples to test against 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 March Madness 1 Seeds data — FAQ
What Kalshi March Madness 1 Seeds data can I download?
Tick-by-tick trades and Level-2 order-book depth for every contract of the March Madness 1 Seeds series on Kalshi (71 contract files on the latest day). One bundle = one UTC day of the whole series.
What is the Kalshi series ticker for March Madness 1 Seeds?
KXMARMAD1SEED — 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 KXMARMAD1SEED-* contract listed that UTC day.
How far back does the March Madness 1 Seeds data go?
Coverage runs March 2026 – present — 183 trading days in total.
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 March Madness 1 Seeds 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 March Madness 1 Seeds 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 March Madness 1 Seeds 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 March Madness 1 Seeds 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 March Madness 1 Seeds contracts trade per day on Kalshi?
On average 0 March Madness 1 Seeds contracts had at least one trade per UTC day over the last 30 captured days on Kalshi, with about 18.0K order-book level updates recorded per day. A day bundle contains every contract file of the series for that day.
How liquid are Kalshi March Madness 1 Seeds contracts?
Over the last 30 captured days, the turnover-weighted quoted bid-ask spread was 1.27 ¢ (contracts quote 0..1 = 100 ¢), the mean best-bid/best-ask notional was about $425.83 per side, 100 % 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 March Madness 1 Seeds contract on 2026-10-14?
KXMARMAD1SEED-27-FLA — $48.64 USD turnover over 1 trades on Kalshi. The 2 most traded contracts of the series did 2 trades and $53.36 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 March Madness 1 Seeds trading day on Kalshi?
2026-09-30, with $1.5K of USD turnover over 9 trades across every March Madness 1 Seeds contract of the day; the busiest full month was Sep 2026 at $1.5K. Since our statistics began on 2026-07-18 the series has recorded 69 trades and $2.2K over 90 captured days; the single biggest contract was KXMARMAD1SEED-27-FLA on 2026-09-30 with $1.5K. Any of these days is a downloadable bundle.