Quote from m22au:
What time does the NYSE print the closing price for stocks?
Is it 4.15pm ET?
If so, is there a reason why my requests to cancel NYSE orders are not being accepted now?
Quote from speculatus:
The specialist closes a stock when it prints imbalance/close trades. It can be any time after 4:00pm. I saw some close prints well after 4:15pm
NYSE will reject any FIX messages that comes after 4:00pm with 58=REJ - MARKET CLOSED