Polymarket price repricing takes 80 minutes despite instant blockchain rails

Blockchain settlement is supposed to be instant. Yet new research into Polymarket, the world’s largest prediction market, shows that speed and accuracy are not the same thing. Despite running on infrastructure that can settle trades in seconds, Polymarket price repricing after major breaking news actually takes far longer than most traders assume — closer to an hour and a half than a heartbeat.

Key takeaways

• Polymarket prices take roughly 80 minutes to fully reprice after major news events, according to research on the platform’s high-frequency trading behavior.
• Prediction markets initially move only about 64% of the way toward the corrected price when news breaks, with most of the retracement happening within a 1-to-30-minute window.
• This underreaction shows up across multiple prediction market platforms, not just Polymarket, suggesting a structural pattern rather than a platform-specific flaw.
• Thin liquidity makes the lag worse, stretching out the time needed for prices to fully catch up to new information.
• Separately, Polymarket faced scrutiny in early 2026 over trades tied to Iranian geopolitical developments, and a Stanford and Singapore Management University study found 821 accounts earned $8.2 million by manipulating five-minute bitcoin settlement windows.

Polymarket Price Repricing and the 80-Minute Lag

Full price adjustment on Polymarket after a major news event takes about 80 minutes, far longer than the near-instant settlement its blockchain rails are technically capable of. That gap between infrastructure speed and market speed is the core finding driving renewed scrutiny of how prediction markets actually process information.

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