Yes. You can enter a stock transaction summary. However, it's not advisable for dividends and interest.
You've probably explored imported from your broker to avoid the data input. Please feel free to post any additional details or questions in the comment section.
https://ttlc.intuit.com/replies/4926553
Here's a little instruct on handling a 1099 composite:
https://ttlc.intuit.com/replies/6660730
