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Total Active Markets

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

127,377

Total Volume

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

$5,730,792,477

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.

$561,247,558

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.

$3,243,297,991

Polymarket$2.87BOIOpen interest: sum of pool liquidity across all active markets, reported by the Polymarket API.

Kalshi$354.88MOIOpen interest: total contracts outstanding across all active markets, reported by the Kalshi API.

Limitless$23.03MOIOpen interest: estimated from total volume traded (USDC). Limitless does not report a separate OI metric.