Sei Investments Co (SEIC) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

617,535Shares held by institutions

$47,704,579Value of institutional holdings

68.00%Institutional ownership %

-4.76%Shares Changed QoQ

560No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Sei Investments Co (NASDAQ:SEIC) appears in 546 institutional 13F filings for the quarter ending December 2025.

They owned 70.0% of outstanding stock in December 2025, down from 73.1% the prior quarter.
They decreased total shares held in SEIC by -2.02% quarter over quarter, and investors in Sei Investments increased 2.44% from a year ago.
Activity in SEIC broke down as 271 buyers, 191 sellers, and 84 unchanged among 546 total holders.
Altogether, these fund groups held 88.38Mn shares in SEIC by December 2025, down by 1.83Mn shares quarter on quarter, and down 10.04Mn shares year over year.
VANGUARD GROUP INC holds the largest position in SEIC at 11.07Mn shares as of December 31, 2025, or 8.76% of shares outstanding.
Leading buyers of Sei Investments shares for the quarter ending December 2025 were NORGES BANK (652.87K), Clark Capital Management Group, Inc. (619.32K), PFA Pension, Forsikringsaktieselskab (519.31K), BlackRock, Inc. (375.24K), LORD, ABBETT & CO. LLC (308.99K).
The largest sales of SEIC for the quarter ending December 2025 came from Bank Of America Corp /De/ (3.32Mn), Morgan Stanley (518.56K), UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC (429.62K), Royal Bank Of Canada (339.91K), Jpmorgan Chase & Co (328.8K).
Business Quant data shows the 10 biggest positions in Sei Investments as of December 2025 are held by VANGUARD GROUP INC (11.07Mn), BlackRock, Inc. (9.64Mn), LOOMIS SAYLES & CO L P (8.74Mn), Morgan Stanley (5.08Mn), State Street Corp (4.28Mn), Bank Of America Corp /De/ (2.92Mn), GEODE CAPITAL MANAGEMENT, LLC (2.89Mn), LORD, ABBETT & CO. LLC (1.92Mn), Beutel, Goodman & Co Ltd. (1.88Mn), DIMENSIONAL FUND ADVISORS LP (1.85Mn).

546 Institutional Holders

617,535 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	375,238	4.05%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	-189,226	-1.68%	$0.00
Prana Capital Management, LP	31 Dec, 2025	-60,145	-8.46%	$0.00
HSBC HOLDINGS PLC	31 Dec, 2025	298,116	470.84%	$0.00
LOOMIS SAYLES & CO L P	31 Dec, 2025	-231,415	-2.58%	$0.00
UBS Group AG	31 Dec, 2025	192,470	43.38%	$0.00
Barclays Plc	31 Dec, 2025	-9,612	-2.99%	$0.00
Morgan Stanley	31 Dec, 2025	-518,564	-9.27%	$0.00
Qube Research & Technologies Ltd	31 Dec, 2025	-203,563	-26.55%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	180,132	150.25%	$0.00
State Street Corp	31 Dec, 2025	-253,517	-5.59%	$0.00
PFA Pension, Forsikringsaktieselskab	31 Dec, 2025	519,312	0.00%	$0.00
World Investment Advisors	31 Dec, 2025	6,754	0.00%	$0.00
Bank Of America Corp /De/	31 Dec, 2025	-3,319,811	-53.18%	$0.00
Man Group plc	31 Dec, 2025	19,374	6.17%	$0.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	109,974	3.95%	$0.00
Arbejdsmarkedets Tillaegspension	31 Dec, 2025	285,176	0.00%	$0.00
LORD, ABBETT & CO. LLC	31 Dec, 2025	308,988	19.21%	$0.00
Azora Capital LP	31 Dec, 2025	216,465	0.00%	$0.00
Beutel, Goodman & Co Ltd.	31 Dec, 2025	-140,523	-6.95%	$0.00

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