Today we introduce the new “Post Only” option for limit orders, also known as “Add Liquidity Only” orders.
Usually, traders use Post Only orders to avoid paying the Taker fee and prevent faults of entry, as incorrect orders would fail to be executed.
How it works:
- Upon arrival to the matching engine, a check will be performed to ensure that the Post Only order does not remove liquidity from the order book.
- In case any part of such order matches with a pre-existing order, it is immediately removed before executing.
- Post Only limit order resides in the order book until it is filled as a regular limit order.
In other words, this order type guarantees that the order only brings liquidity to the market, and never removes it.