You can do it either way. A third option may be to import the information if your financial information is a TurboTax Import Partner. That way you don't have to type in all the trades.
If you want to enter a summary, see How do I enter a large number of stock transactions in TurboTax Online? and scroll down to How to enter a summary in lieu of individual transactions? You'll need to mail in your financial detail along with form 8453 within three days of e-filing your return.
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