It can go both ways.
You can buy a stock premarket and it can EXPLODE after the open.
Or you can buy a stock premarket that eventually it drops lower and you can say to yourself.
" I should've waited to buy it lower"
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One of the biggest day trading decisions to make EVERYDAY is do you buy a stock you like premarket or do you wait to see if after the open it opens lower.
This can make or break a trade.

