On Sat, Jul 31, 2021 at 04:12 AM, Luke wrote:
It is also a bit strange to me, because it pretty much always fills at 100 and then the remainder. Ie if order is 130 shares, it would fill 100 and then 30.
From your above sentence I assume that you are talking about US shares? The default counter is one "lot", which consists of 100 shares. Often do institutional traders work with lots. So any multiple of a lot fills usually quickly. The remainder, less than 100 shares, is called an odd lot. It might take longer to get those filled. This might explain your observation.
As long as you don't modify the quantity of your order will you not be charged extra for getting your partial lots filled. Using AllOrNone will not influence the commission on the trade.
