Answering OP and Temujin79:
I mis-spoke in my last msg. There were thousands of "lots" (not shares) displayed on both bid and ask. So there were hundreds of thousands shares displayed and in competition with OP's 3000 shares offered. So OP's 3K offered is really a very small percentage of liquidity provided. Unless OP knows for sure (s)he should have priority, then it seems rather normal that his/her offer was not lifted.
Temujin79: I have ActiveTick and Polygon as my main data sources. Not perfect, but OK for my needs (which is not HFT).
OP: I did not see millions of shares on the bid side. Only hundreds of thousands. (See attached.) Do you have a screenshot? Were you referring the top of the book or the entire order book?
Answering OP and Temujin79:
I mis-spoke in my last msg. There were thousands of "lots" (not shares) displayed on both bid and ask. So there were hundreds of thousands shares displayed and in competition with OP's 3000 shares offered. So OP's 3K offered is really a very small percentage of liquidity provided. Unless OP knows for sure (s)he should have priority, then it seems rather normal that his/her offer was not lifted.
Temujin79: I have ActiveTick and Polygon as my main data sources. Not perfect, but OK for my needs (which is not HFT).
OP: I did not see millions of shares on the bid side. Only hundreds of thousands. (See attached.) Do you have a screenshot? Were you referring the top of the book or the entire order book?