How do you sell shares in a stock in my portfolio?

Forget that way. Just use a pen and paper to write it down along with other stock action.

troll. if you have a stock portfolio, you would already know the answer.

Ask your broker to sell or buy stocks.

through your broker

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I do not sell shares in YOUR portfolio.

If you could figure out how to buy them, the process is pretty similar for selling them.

If you need help, call your broker/brokerage.