OKX settlement update: 5-minute window grows sixfold to curb flash swings
OKX is changing how quickly two of its most popular Event Contracts settle, giving traders a longer window before a price is locked in. The exchange confirmed that this OKX settlement update will apply specifically to 5-minute and 15-minute Up/Down events, two of the shorter-duration contracts on its Event Contracts platform, and the change is designed to make outcomes more resistant to sudden, short-lived price swings.
Key takeaways
- The updated settlement windows take effect at 16:00 on August 17, 2026 (UTC+8).
- 5-minute Up/Down events move from a 5-second settlement window (5 data points) to 30 seconds (30 data points).
- 15-minute Up/Down events move from a 15-second window (15 data points) to a full minute (60 data points).
- The settlement price is still the arithmetic average of second-level index candle closing prices inside that window.
- Fees, P&L calculations, and existing open positions are not affected, so users don’t need to do anything.
OKX updates settlement windows for 5-minute and 15-minute Up/Down Event Contracts
OKX says the goal behind this OKX settlement update is straightforward: improve settlement stability and smooth out the trading experience for Event Contracts. Up/Down events ask traders to bet on whether a price will finish higher or lower than it started, and until now, the final outcome for the shortest contracts was decided using only a handful of seconds of price data. That narrow window left results more exposed to brief spikes or flash moves that don’t necessarily reflect the broader market direction.
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