So first time doing short-term stock trading this past year. Didn't really make much (<$50), but noticed a mistake after I submitted my federal return. Instead of having box A checked on Schedule D ("My brokerage submits trade records to the IRS"), in my ignorance I checked box C ("Brokerage DOES NOT submit trade records to IRS"). I found out after I looked more carefully at my 1099-B that i should have checked box A. I still reported my summary total proceeds, but not the line-by-line stock trades. Do I need to file Form 8949 or amend my return since my broker does submit the trades and I filled out the form properly given that information?
