SEI Institutional Managed Trust Mid-Cap Portfolio Fund Class F (SEMCX) is an open-end mutual fund that seeks long-term capital appreciation by investing at least 80% of its net assets in equity securities of medium-sized companies, focusing on those with low price-earnings and price-book ratios, high sustainable growth levels, and potential for positive earnings revisions; it employs a multi-manager approach under the supervision of SEI Investments Management Corporation (SIMC), with assets allocated among sub-advisers such as Leeward Investments, LLC. The fund, part of the SEI Institutional Managed Trust domiciled in the United States and launched on February 16, 1993, targets the mid-cap blend segment and is available primarily to institutional investors with a minimum initial investment of $100,000; its Class F shares carry a net expense ratio of 0.98% and trade daily in USD, with total net assets of approximately $51.93 million. Headquartered through its adviser SEI Investments Company, founded in 1968 in Oaks, Pennsylvania, the fund operates within SEI's broader platform serving financial institutions, advisors, and high-net-worth clients across North America, Europe, Asia, and other regions. Recent changes include portfolio management updates in 2024, such as the confirmation of Leeward Investments, LLC as a sub-adviser for a portion of the Mid-Cap Fund's assets, alongside adjustments in personnel like the removal of certain managers (e.g., Stephen C. Dolce) across SEI Institutional Managed Trust funds; additionally, SEI Investments Company announced the launch of SEI Strategies with Capital Group in March 2025 and completed the first stage of a strategic investment in Stratos Wealth Holdings in December 2025, enhancing its wealth management ecosystem.