Now if you are trading $TSLA?
There are traders with big accounts that Trade Millions of $'s and they are just scalping small moves long and short all day.
You need a lot of money to do that.
Unless you are just buying at what you think is a good price for a long term trade.
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I sell covered calls. Usually for a hour or two, starting within the first trading hour.
With that money: in IRA acct I'll buy more shares; in regular acct I pay down margin.
Works for me )