If I DCA $100 a day for a year, and then sell everything at the end, do I have to account for all 365 purchases if they all made a profit?

Or do I only have to fill out the net total of my gains?

I'm asking because I heard someone say “every time you sell a stock,” you'll have to report it on your taxes.

Another example is if I buy 100 times, and sell 100 times within a year, do I only have to fill out the yearly TOTAL net gain on my tax form, or do I have to individually track and fill out each transaction (100 total)?

If the latter is true, then this seems like a huge hassle.