Polymarket Sports Order-Book Archive (Mar–Oct 2026)

Historical Polymarket sports quotes and L2 depth for every captured sport, Mar–Oct 2026. Dated Parquet with coverage map.

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Full schema & known gaps →· Sold as-is — but if a file is broken or won't open, email [email protected] and we'll send a fixed file or refund you. No hassle.

Inspect the free sample rows and schemas before buying.

Artifact vintage: the product page and shipped documentation state the exact coverage, row counts and known limitations. A purchase delivers the advertised frozen artifact; no future refresh is promised unless the checkout terms explicitly say so.

College football 2026; Copa Libertadores 2026; MLB 2026; MLS 2026; NFL 2026; Tennis 2026; WNBA 2026 Observed partial coverage

Declared season scope; individual event-to-season mapping is unverified. This is not a complete-season archive.

College football 2026 · Phase coverage not specified

Copa Libertadores 2026 · Phase coverage not specified

MLB 2026 · Phase coverage not specified

MLS 2026 · Phase coverage not specified

NFL 2026 · Phase coverage not specified

Tennis 2026 · Phase coverage not specified

WNBA 2026 · Phase coverage not specified

Book samples:: 2026-03-28T17:36:32Z → 2026-10-03T23:59:21Z
Artifact vintage:: 2026-03-28 → 2026-10-03

UTC timestamps retain their recorded precision; dates alone identify UTC days. Vintage, observation and sports event times are separate. Capture time does not establish exchange quote freshness.

Sports event starts: start unknown → end unknown. Event dates are not inferred from these quote capture windows.

Coverage qualifications

Collection tags describe the declared product scope; exact fixture-season assignment is unverified.
Coverage of other competitions or editions is unassigned; this filter does not partition or verify individual rows.
Declared season scope; individual event-to-season mapping is unverified
Season phase coverage has not been declared
Complete-season fixture denominator has not been verified

Why the capture contract matters

Venue APIs expose useful live books, trades and price history, but they do not serve the same historical snapshot and game-context archive packaged here. Data that was not recorded during the live window cannot be recreated from a current-book endpoint later. The exact fields, cadence, venue coverage and limitations vary by product, so this page and the shipped documentation state the contract explicitly instead of calling every file complete or tick-level.

What's in the dataset

Dated snapshot: 587,197,084 depth rows · 1,628,787,386 total rows · book samples 2026-03-28T17:36:32Z through 2026-10-03T23:59:21Z · artifact vintage 2026-10-03; separate from observation times

✓ Dated snapshot: 587,197,084 depth rows · 1,628,787,386 total rows · book samples 2026-03-28T17:36:32Z through 2026-10-03T23:59:21Z · artifact vintage 2026-10-03; separate from observation times
✓ Every sport label ZenHodl's Polymarket recorders captured: top-of-book quotes about every 30 s plus per-level L2 depth from Jun 16. Quotes and book levels only, no trade prints; not a census. COVERAGE.md derives every capture gap, missing day-file and capture era.
✓ Version-specific observation gaps are documented in the delivered archive; missing observations are not proof a market was closed. Displayed quotes are observations, not proof of executable fills.

Research uses for this dataset

Cross-sport microstructure

Compare spreads, depth and repricing speed across every sport label in one consistent schema.

Backtest data hygiene

Use COVERAGE.md and days.csv to exclude dark windows and thin days before any backtest.

See the real rows before you buy

We publish real sample rows — not a marketing mockup. Load them in DuckDB, inspect the schema and coverage contract, then decide.

Get the full archive — $149 → ↓ Free sample first

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