SEI INVESTMENTS COMPANY (SEIC) Institutional Ownership and Insiders Activity
SEI INVESTMENTS COMPANY (SEIC) is widely held by institutional investors, with 557 firms reporting positions valued at approximately $7.88B based on SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is the largest disclosed holder, reporting approximately $870.74M in SEIC holdings in its latest filing.
Recent insider activity includes 26 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.
Institutional Holders
557
Total Reported Value
$7.88B
Largest Holder
Blackrock, Inc.
Largest Position
$870.74M
Insider Transactions (90d)
26
Latest Filing Quarter
Q2 2026
New Institutional Positions
77
Funds Exiting Positions
87
Top Institutional Owners
View allInvestorReported Balance
- Blackrock, Inc.$870.74M
- Loomis Sayles & Co L P$743.96M
- Vanguard Portfolio Management Llc$538.61M
- Vanguard Capital Management Llc$411.03M
- State Street Corp$372.91M
Related SEIC Institutional Insights:
- SEIC 13F Institutional Holders
- SEIC Top Institutional Shareholders
- SEIC Institutional Ownership Changes
- Financial Services Sector Institutional Ownership
- Financial Services Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Financial Services Stocks By Institutional Investors
- Most Sold Financial Services Stocks By Institutional Investors
- SEIC Insider Trading & SEC Form 4 Activity
- SEIC Articles
- Top Institutional Investor Stock Rankings