Bybit Introduces Changes to Maximum Order Size for Limit and Market Orders
This article provides an easy-to-read summary and insights based on the latest Bybit announcement.
Bybit is set to update the rules for maximum order sizes on Spot and Margin trades. Currently, both limit and market orders have the same limits. However, from October 16, 2025, new rules will be introduced to enhance trading efficiency and offer more flexible strategies to traders.
Key Changes
- Maximum order value limit will be removed.
- Maximum order size for limit and market orders will be separated.
Limit and market orders within the same Spot and Margin pair will now have independent maximum sizes. The maximum size for limit orders will remain as it is, which aligns with the current maximum order size. However, the maximum size for market orders will be set at half of the limit order size.
For post-only and retail price improvement (RPI) orders, the maximum size will be increased to 5 times the limit order size.
API Updates
Orders that exceed the new maximum size will return new error codes “170381” and “170382”. The previous error code “kEcSpotQtyTooHigh = 170135” will no longer be applicable.
To check the order limits, users can use get/v5/market/instruments info and set “Spot” as the category. The fields that will be affected by this change are maxOrderQty and maxOrderAmt. For detailed parameters of each trading pair, please refer to the Spot trading rules.
What You Can Do
To avoid potential issues with placing or executing orders under the updated rules, all users are advised to review these changes and adjust their trading strategies before October 16, 2025.
Insights
These changes by Bybit demonstrate their commitment to improving the trading experience for their users. By separating the maximum order size for limit and market orders, and removing the maximum order value limit, Bybit is providing its users with more flexibility in their trading strategies.
The increase in the maximum size for post-only and RPI orders to 5 times the limit order size also gives traders more options, potentially leading to increased trading activity on the platform.
It’s important for users to be aware of these changes and to adjust their trading strategies accordingly to avoid any potential issues. As always, staying informed and planning ahead will be key to making the most of these new rules.
