MFS InterMarket Income Trust I (the Fund) is a closed-end fund. The fund's investment objective is to seek high current income, but may also consider capital appreciation Massachusetts Financial Services Company (MFS) is the Fund's investment advisor. MFS may invest the Fund's assets in other types of debt instruments. MFS may invest up to 100% of the Fund's assets in lower quality debt instruments. MFS may invest the Fund's assets in the United States and foreign securities, including emerging market securities. MFS may invest the Fund's assets in instruments of issuers in a single country, a small number of countries, or a particular geographic region. MFS may use derivatives for any investment purpose. MFS uses a bottom-up investment approach to buying and selling investments for the fund.