State of the System
As of the latest frozen record
Trends — frozen 00:00 UTC series
Daily Records
| Date | Active Markets | Open Interest | Top Domain | Kalshi / Polymarket |
|---|
Domains Tracked
Twelve venue-agnostic domains, classified from Kalshi series prefixes and Polymarket title keywords. A residual Other bucket is reported honestly rather than forced to zero. Per-domain pages are forthcoming.
About & Citation
Each record is the fixed-hour (00:00 UTC) state of every active market on Kalshi and Polymarket. The live Observatory shows the current diurnal value; this archive holds the canonical fixed-hour value used for the historical series, so days are comparable to one another. Open interest combines Kalshi open interest with Polymarket USD liquidity as comparable USD magnitudes. Sources: Kalshi, Polymarket.
“VolRoc Prediction Market Archive.” volroc.ai/prediction-markets/archive/
Get the daily statistics
A short daily read on the prediction-market universe across Kalshi and Polymarket. No spam.