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Updated September 24, 2026 · refreshed twice a day · daily history kept since the first snapshot
As of September 24, 2026, the 2,100 most active open Polymarket events hold 45,599 markets, with $26.91M traded in the last 24 hours and $291.75M in open interest. The ten busiest events account for 24% of the day's volume; 529 events are recurring price, weather or up/down series and 452 are single games.
| Category | Open events | 24h volume | Share | Open interest |
|---|---|---|---|---|
| Politics & Elections | 695 | $9.16M | 34% | $200.55M |
| Sports | 625 | $9.06M | 34% | $19.37M |
| Crypto | 137 | $3.91M | 15% | $34.22M |
| Other markets | 167 | $1.62M | 6% | $2.47M |
| Economy & Fed | 187 | $1.21M | 5% | $14.13M |
| Geopolitics & World | 88 | $1.09M | 4% | $14.25M |
| Tech & AI | 108 | $445.3K | 2% | $3.82M |
| Culture & Entertainment | 93 | $418.9K | 2% | $2.94M |
| Date (UTC) | Open events | Markets | 24h volume | Open interest |
|---|---|---|---|---|
| 2026-09-24 | 2,100 | 45,599 | $26.91M | $291.75M |
Counts cover the open events the Gamma API returns when paged by 24-hour volume (2,100 this run), which include every event with meaningful daily trading. Categories follow Polymarket's tags as grouped on our odds index. Free JSON: /api/v1/stats.json (CC BY 4.0).
As of September 24, 2026, the 2,100 most active open Polymarket events hold 45,599 markets, with $26.91M traded in the last 24 hours and $291.75M in open interest. The ten busiest events account for 24% of the day's volume; 529 events are recurring price, weather or up/down series and 452 are single games.
See the category table: it splits the last 24 hours of volume across politics, geopolitics, economy, crypto, sports, tech and culture, as tagged by Polymarket.
From Polymarket's public Gamma API, reading the most active open events (the API returns events in pages ordered by 24-hour volume). Numbers are refreshed twice a day and one snapshot per day is kept in the history table.
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