Hacker News Reader

If there are multiple orders at the same price on the same side, how should we determine which ones are filled first?

Or put another way, how should we determine which orders are least likely to get filled?

Well either volume weighted or randomised then

HFT is still a massive thing in volume weighted (we call them pro-rata) markets, and it's even more toxic for retail as lots of people submit large orders that are unlikely to get filled immediately (which retail doesn't have the $ to do) to secure a bigger share of the pie

Reply on news.ycombinator.com