What is the difference between the investment gain (loss) and the annual change in account value?
The investment gain (loss) is the earnings that your account accrued or lost based on the performance of the investment funds in your account. The annual change in account value is the difference between your January 1 opening balance and your December 31 closing balance for the year covered by the statement. It includes all transactions, e.g., contributions, loans, and withdrawals made on your account during the calendar year as well the investment gain or loss on your account.