SEI INVESTMENTS COMPANY (SEIC) Institutional Ownership and Insiders Activity

SEI INVESTMENTS COMPANY (SEIC) is widely held by institutional investors, with 5 tracked firms reporting positions valued at approximately $33.66M based on SEC Form 13F filings for the quarter ended March 31, 2026.

Renaissance Technologies LLC is the largest disclosed holder, reporting approximately $31.37M in SEIC holdings in its latest filing.

Institutional ownership among tracked investors remains highly concentrated, with Renaissance Technologies LLC representing the majority of disclosed value.