Who Owns S E I INVESTMENTS CO (SEIC)? -- Institutional Holders (2026-06-30)

634 institutions reported holding $8.03B of S E I INVESTMENTS CO (SEIC) in SEC 13F filings for 2026-06-30. Largest institutional holders: VANGUARD GROUP INC ($1.02B), BlackRock, Inc. ($870.7M), LOOMIS SAYLES & CO L P ($744.0M), STATE STREET CORP ($372.9M), MORGAN STANLEY ($361.3M). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1VANGUARD GROUP INC$1.02B11.6MTrimmed
2BlackRock, Inc.$870.7M9.9MTrimmed
3LOOMIS SAYLES & CO L P$744.0M8.5MTrimmed
4STATE STREET CORP$372.9M4.3MAdded
5MORGAN STANLEY$361.3M4.1MTrimmed
6Boston Partners$271.4M3.1MAdded
7GEODE CAPITAL MANAGEMENT, LLC$259.1M3.0MAdded
8BANK OF AMERICA CORP /DE/$255.1M2.9MTrimmed
9FMR LLC$220.2M2.5MAdded
10LORD, ABBETT & CO. LLC$202.5M2.3MAdded
11DIMENSIONAL FUND ADVISORS LP$172.1M2.0MAdded
12FIRST TRUST ADVISORS LP$131.7M1.5MTrimmed
13Beutel, Goodman & Co Ltd.$131.1M1.5MTrimmed
14Invesco Ltd.$97.4M1.1MTrimmed
15ROYCE & ASSOCIATES LP$92.1M1.1MAdded
16Caisse de depot et placement du Quebec$87.9M1.0MTrimmed
17Boston Trust Walden Corp$86.9M991,300Trimmed
18NORTHERN TRUST CORP$80.2M914,907Added
19Bank of New York Mellon Corp$78.4M894,194Trimmed
20NORGES BANK$77.8M887,116Added
21BARCLAYS PLC$72.4M825,215Added
22AMERICAN CAPITAL MANAGEMENT INC$65.4M745,323Trimmed
23Sixth Street Partners Management Company, L.P.$61.0M695,446New
24CHARLES SCHWAB INVESTMENT MANAGEMENT INC$61.0M695,446Trimmed
25ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$57.9M660,498Added

Source: SEC Form 13F filings · as of 2026-06-30