Check your input of 1099-B
Column (c)—Date Sold or Disposed Of
Enter in this column the date you sold or disposed of the property. Use the trade date for stocks and bonds traded on an exchange or over-the-counter market. For a short sale, enter the date you delivered the property to the broker or lender to close the short sale.
If you received a Form 1099-B (or substitute statement), box 1c may help you determine when you sold or disposed of the property.
