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Total Active Markets

Count of all non-resolved markets currently tracked across Polymarket, Kalshi, and Limitless.

131,422

Total Volume

Lifetime trading volume across all platforms. Polymarket and Kalshi report volume directly; Limitless volume is cumulative USDC traded.

$5,969,183,657

24h Volume

24-hour trading volume. Polymarket and Kalshi report this directly. Limitless does not break out 24h volume separately, so it is not included.

$651,640,349

Total Open Interest

Polymarket: sum of pool liquidity. Kalshi: open interest (contracts outstanding). Limitless: uses total volume as a proxy — no separate OI metric is available.

$3,721,886,052

Polymarket$3.29BOIOpen interest: sum of pool liquidity across all active markets, reported by the Polymarket API.

Kalshi$404.59MOIOpen interest: total contracts outstanding across all active markets, reported by the Kalshi API.

Limitless$27.64MOIOpen interest: estimated from total volume traded (USDC). Limitless does not report a separate OI metric.