SSGA Funds Management, Inc. (the "Adviser" or "SSGA FM") manages the Target Retirement 2055 Fund using a proprietary asset allocation strategy. The fund is a "fund of funds" that invests in a combination of mutual funds and ETFs sponsored by the Adviser or its affiliates ("underlying funds"). It is intended for investors expecting to retire around the year 2055 and who are likely to stop making new investments in the fund at that time.