DPUMA8:I am studying for my CPA licensing and I do taxes for a CPA. Pretty much your schedule D on your tax return is extremely hard for the IRS to verify things. All they get is a dollar amount of your total sales for the year. The IRS doesn't get the symbols of what you bought, how many shares, your buying price, or your selling price. All they get is a total number.
To help you with your studying for CPA, I will give you a hint: Schedule D-1. If you just do schedule D without schedule D1, you will get a nice letter from the IRS asking for explaination of your stock sell transactions. Btw, there are two forms for Schedule D-1: the short form and the continuous form.
PS: I'm not a tax professional. I'm just someone who have been doing my own taxes all my life. My answer is based on my life experience. Yes, I did get a letter from the IRS three years ago, becuase I was too lazy to do the Schedule D1. I usually have at least 700 stock transactions per year. Nowadays, thanks to Quicken software, my Schedule D1 takes only few minutes to complete.