Polymarket CLOB Raises Crypto Taker Delay to 150ms, Adds Volume-Tier Rate Limits

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Polymarket's central limit order book introduced a 150ms taker delay for crypto orders on September 4 at 14:00 UTC, up from the previous 50ms, alongside volume-based rate-tier limits that have been active since around August 6. The taker delay includes a cancel-lock mechanism, meaning orders already in the delay window cannot be freely withdrawn, increasing the cost of rapid enter-and-cancel strategies. These changes particularly affect high-frequency tactics that rely on immediate order placement and quick cancellation in response to price ticks. Slower, clip-based trading approaches tied to a 60-second Chainlink TWAP remain viable but must account for the added latency and stricter cancellation rules. Traders are advised to re-measure fill quality, treat rate-limit signals as primary inputs, and recalibrate entry thresholds using only post-September 4 execution data.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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