Per IRS Instructions for Form 8949, "If you sold a block of stock (or similar property) that you acquired through several different purchases, you may report the sale on one row and enter “VARIOUS” in column (b). However, you still must report the short-term gain or (loss) on the sale on Part I and the long-term gain or (loss) on Part II."

You can enter Various as the date acquired on Form 1099-B. For more detailed information about entering Form 1099-B, see Form 1099-B - Entering into TaxAct.

Note that any link in the information above is updated each year automatically and will take you to the most recent version of the webpage or document at the time it is accessed.