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 $33.57M based on SEC Form 13F filings for the quarter ended June 30, 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.

Recent insider activity includes 18 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.