How order editing affects order book?

Does changing size of order without changing price affect its place in order book?

For example:

  • I am first to place limit order at price x
  • Others also places limit order at price x

As far as I understand Coinbase use FIFO, so my order will be matched/filled first. What happens if I change size? Will my order still be matched/filled first or my order gets moved to the end as if I would have placed new order?

We follow Coinbase Exchange here:

If you increase the quantity, or modify the price (up or down) you lose your place and move to the back of the queue. If you decrease the quantity you keep your place in the queue.


Thanks! Please add that info to Edit Order endpoint description.

1 Like