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re: Nasdaq has submitted a request to the SEC for 23/5 stock trading

Posted on 12/16/25 at 4:04 pm to
Posted by Triple Bogey
19th Green
Member since May 2017
6571 posts
Posted on 12/16/25 at 4:04 pm to
It would be nice to be able to sell an option after close. I've watched a contract go from up 80% AH to 0 by the time the market opened the following morning.
Posted by Tiger4life306
Member since Apr 2016
650 posts
Posted on 12/16/25 at 4:14 pm to
These “80%” you see is due to the low trading volume and wide bid-ask spreads that happen during after market hours. Once liquidity returns during normal market hours the bid-asks tighten and the large swings one way or another generally dissipate.
Posted by lsuconnman
Baton rouge
Member since Feb 2007
4477 posts
Posted on 12/16/25 at 4:22 pm to
It has to be more than a nominal impact considering there’s an entire cottage industry of 0DTE ETFs trying to game it.
Posted by lynxcat
Member since Jan 2008
25018 posts
Posted on 12/16/25 at 4:44 pm to
If you are this sensitive to the positions then you need to close out of whatever you don’t want to monitor by the hour.
Posted by Tiger4life306
Member since Apr 2016
650 posts
Posted on 12/16/25 at 5:25 pm to
Lol that is an absurd, overly simplistic and draconian take. I would absolutely never do that. Not everything is black and white.
I just don’t think these trading hour changes are generally beneficial. The trading hours seem pretty sufficient as they are right now.
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