SEI INVESTMENTS CO - Common Stock (SEIC)

CUSIP: 784117103

Q3 2025 13F Holders as of 30 Sep 2025

Holder snapshot 7 signals
Share change
-1,464,042
Put/Call ratio
17%
SEC-reported price per share
$84.85
Number of holders
543
Value change
-$142,914,171
Number of buys
264
Open additional details 1 more signal available
Number of sells
239
Security identity Names, identifiers, and filing context for this profile. 1 source field
Shares outstanding
122,303,095

Security key

784117103

Report period

Q3 2025

Institutions

543

Top holders

10

Ownership snapshot

Top reported holders of SEIC - SEI INVESTMENTS CO - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
BlackRock, Inc.
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
15/15
Latest evidence
30 Jun 2025
13F 13D/G Lead comparable stake: 6.8% 13D/G row: BlackRock, Inc. Showing 1-6 of 15 holder rows.

Quick read

BlackRock, Inc. leads the comparable SEC ownership view at 6.8%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership Top 5
BlackRock, Inc. 6.8%
VANGUARD GROUP INC 9.2%
LOOMIS SAYLES & CO L P 7.2%
MORGAN STANLEY 4.6%
STATE STREET CORP 3.9%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
BlackRock, Inc.
13F 13D/G
Company
6.8%
from 13D/G
$826,893,562
9,202,020 shares
30 Jun 2025
VANGUARD GROUP INC
13F
Company
13F
9.2%
$1,009,093,744
11,229,621 shares
30 Jun 2025
LOOMIS SAYLES & CO L P
13F
Company
13F
7.2%
$794,474,637
8,841,249 shares
30 Jun 2025
MORGAN STANLEY
13F
Company
13F
4.6%
$506,300,914
5,634,328 shares
30 Jun 2025
STATE STREET CORP
13F
Company
13F
3.9%
$426,429,282
4,745,485 shares
30 Jun 2025
BANK OF AMERICA CORP /DE/
13F
Company
13F
2.6%
$284,014,716
3,160,636 shares
30 Jun 2025
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
543
Shares
88,500,358
Rows available
543
Investor Option Weight % Change % SEC-reported value * Price Shares Share Change Activity Report Period

* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2025 vs Q2 2025 Across Filers

Q2 2025 holders
560
Q3 2025 holders
543
Holder diff
-17
Investor Q2 2025 Shares Q3 2025 Shares Share Diff Share Chg % Q2 2025 value Q3 2025 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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