Event Contract UpDown Event Settlement Rule Update
Dear OKX Users,To further improve settlement stability and the trading experience for Event Contracts, OKX will adjust the settlement windows for 5-minute and 15-minute Up/Down events. Details are as follows:
I. Effective Time
16:00 on August 17, 2026 (UTC+8)
From the effective time above, the relevant Up/Down events will be settled under the updated rules.
II. Settlement Rule Changes
Event Type | Current Settlement Window | Updated Settlement Window |
5-Minute Up/Down events | 5 seconds (5 data points) | 30 seconds (30 data points) |
15-Minute Up/Down events | 15 seconds (15 data points) | 1 minute (60 data points) |
The settlement price will continue to be calculated as the arithmetic average of the closing prices of the second-level index candles within the settlement window.All other settlement mechanics, including the index source, outcome determination, and dispute review process, remain unchanged. This update will not affect users’ P&L settlement amounts or fees. Existing positions can continue to be held and traded, and no action is required.For details, please refer to How to Trade Event Contracts and Settlement Logic.