OKX to adjust tick size for some spot trading pairs

In order to increase market liquidity and improve your trading experience, OKX will adjust the tick sizes of certain spot trading pairs at 6:00 am – 6:30 am (UTC) on March 31, 2023.

Specific adjustment details are as follows:
Note: If the trading pair is available for spot and margin markets, the adjustment will apply to both.

Risk warning
During the tick size adjustment period, trading will be temporarily suspended for 2 minutes for the affected trading pair, you will not be able to transfer funds, place orders, amend orders, and cancel orders for the affected trading pair. Other trading pairs will not be affected. Please adjust your trading strategies accordingly to avoid any unnecessary impact.

A. For existing orders

1. If the tick size is adjusted to a smaller decimal value (0.0001 to 0.01)
   a. Limit orders: If your existing order has a larger decimal place than the adjusted tick size, your existing order will be canceled. If your existing order has a smaller or equal decimal place than the adjusted tick size, your existing order will not be canceled. For example, if tick size is adjusted from 0.0001 to 0.01, Existing Order 130.2442 will be canceled and Existing Order 130.24 will not be canceled.
   b. Trading bots: If your existing order has a larger decimal place than the adjusted tick size, your existing order will be canceled. If your existing order has a smaller or equal decimal place than the adjusted tick size, your existing order will not be canceled. For example, if the tick size is adjusted from 0.0001 to 0.01, limit order 130.2442 will be canceled and limit order 130.24 will not be canceled.

   • For grid and DCA bots, any open orders you already placed with a trading bot will be canceled first (including spot grid, futures grid, moon grid, spot DCA), then the bots will be stopped.
   • For all other bots and order types (including recurring buy, TWAP, iceberg, smart portfolio, arbitrage, stop, trailing stop, trigger), your open orders will be canceled first, but the bots will not be affected. Your bots will resume trading with the new tick size after trading resumes.

2. If the tick size is adjusted to a larger decimal value (0.01 to 0.0001)
   a. After the adjustment, existing orders, will be filled according to the adjusted tick size.
   
   Note: The above rules are also applicable to orders placed using API.

After the tick size is adjusted (for example, from 0.0001 to 0.01), if you place an order with the previous tick size (0.0001) via API, the system will automatically round down buy orders and round up sell orders so that the order can be successfully placed. However, you will not be able to place orders using the pre-adjusted tick size on the normal web and mobile interface.

B. Open orders and the display of historical orders

1. If the tick size is adjusted to smaller decimal places (0.0001 to 0.01): For non-API users, open orders and historical orders will be displayed with the adjusted tick size by rounding down the buy orders and rounding up the sell orders. For API users, open orders and historical orders will be displayed as the pre-adjustment tick size.

2. If the tick size is adjusted to larger decimal places (0.01 to 0.0001): Open orders and historical orders will be displayed with the original tick size.

You are encouraged to adjust your trading strategies based on the above changes.

For any inquiries regarding this adjustment, please feel free to contact us in the official OKX Telegram group or via the Support Center.

OKX
March 28, 2023