Data catalog
Polymarket historical data catalog
Marketlens records full L2 order books for every recurring Polymarket market: every price change with millisecond timestamps, anchored by periodic snapshots, plus trades, candles, and resolution outcomes. This catalog covers the actively collected series, grouped by category.
Data as of 2026-08-05
Categories
Most active series
The ten series with the highest traded volume in the archive.
FIFA World Cup
daily · 14,077 markets · $1.5B
FOMC
monthly · 18 markets · $748.5M
Bitcoin Hit Price Monthly
monthly · 155 markets · $244.8M
Crude Oil (CL) hit
monthly · 191 markets · $167.0M
MLB
daily · 15,780 markets · $97.1M
BTC Multi Strikes Weekly
daily · 1,698 markets · $91.9M
Ethereum Hit Price Monthly
monthly · 139 markets · $55.9M
ATP
daily · 20,820 markets · $45.6M
WTA
daily · 10,973 markets · $23.9M
Bitcoin Hit Price Weekly
weekly · 341 markets · $23.3M
How the data is collected
Each market gets a dedicated WebSocket connection to Polymarket's CLOB. Full book snapshots anchor a stream of price change deltas, so the book at any millisecond reconstructs exactly. The format, fields, and replay endpoints are documented in the order book docs, and full markets download as Parquet via exports.
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$ pip install marketlens