Hello, I wonder whether I lose my order position in queue (for example e-mini futures NQ) at the exchange as soon as I modify the order size. I understand it uses the FIFO logic. Let's say I have LMT 1@10. There are other 100 contracts so overall size is 101 at 10. What happens when I modify to 2 contracts? Is my size moved behind those 100 contracts so I lose my position in the queue? Thanks for help
if increased, yes https://www.cmegroup.com/confluence/display/EPICSANDBOX/Matching+Algorithms#MatchingAlgorithms-FIFO