假設股票A,有以下操作:
day 1: buy 100 shares at 10
day 2: sell 100 shares at 15 (no loss)
day 3: buy 100 shares at 20
day 4: sell 100 shares at 15 (with loss)
按照定義,在day 4的loss sale之前30內之內有過buy,應該是wash sale。 但這個時候我已經沒有day 1買的股票了,已經沒法調整cost basis了。如果是wash sale的話,這個loss是不是就永遠失去了?
按照IRS的算法,這4次操作gain是0,還是500?