Stock Ownership/SEIC

SEI INVTS CO (SEIC): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in SEIC · Financials. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
20
13F filers
Aggregate Value
$307.9M
Across holders
Last Price
$110.75
2026-08-24
Sector
Financials
GICS
Quarterly fund activity13 increased6 reduced5 exited
Full exits: Verition Fund Management LLC, Point72 Asset Management, L.P., Qube Research & Technologies Ltd, CAPSTONE INVESTMENT ADVISORS, LLC, Ancora Advisors, LLC
Institutional Holders of SEIC
↗
20 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund660K$57.9M18.8%0.0%Added+$8.1MQ2 2026
VOLORIDGE INVESTMENT MANAGEMENT, LLC
CIK 0001556921
Hedge Fund518K$45.5M14.8%0.2%Added+$9.3MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund334K$29.3M9.5%0.0%Reduced$-226.4MQ2 2026
BALYASNY ASSET MANAGEMENT LLC
CIK 0001218710
Hedge Fund308K$27.0M8.8%0.0%Added+$7.2MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund285K$25.0M8.1%0.0%Reduced$-10.1MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund266K$23.3M7.6%0.0%Added+$12.9MQ2 2026
Rockefeller Capital Management L.P.
CIK 0001739439
Hedge Fund228K$20.0M6.5%0.0%Added+$19.0MQ2 2026
MARKEL CORP (MKL)
CIK 0001096343
Hedge Fund173K$15.2M4.9%0.1%Unchanged+$4.8MQ2 2026
Bridgewater Associates, LP
CIK 0001350694
Hedge Fund144K$12.7M4.1%0.1%Reduced$-7.7MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund119K$10.4M3.4%0.0%Added+$8.7MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded
Hedge Fund
$57.9M· 18.8% of total· 0.0% port· 660K sh· +$8.1M QoQ· Q2 2026
VOLORIDGE INVESTMENT MANAGEMENT, LLCAdded
Hedge Fund
$45.5M· 14.8% of total· 0.2% port· 518K sh· +$9.3M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$29.3M· 9.5% of total· 0.0% port· 334K sh· $-226.4M QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$27.0M· 8.8% of total· 0.0% port· 308K sh· +$7.2M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$25.0M· 8.1% of total· 0.0% port· 285K sh· $-10.1M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$23.3M· 7.6% of total· 0.0% port· 266K sh· +$12.9M QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$20.0M· 6.5% of total· 0.0% port· 228K sh· +$19.0M QoQ· Q2 2026
MARKEL CORP (MKL)Unchanged
Hedge Fund
$15.2M· 4.9% of total· 0.1% port· 173K sh· +$4.8M QoQ· Q2 2026
Bridgewater Associates, LPReduced
Hedge Fund
$12.7M· 4.1% of total· 0.1% port· 144K sh· $-7.7M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$10.4M· 3.4% of total· 0.0% port· 119K sh· +$8.7M QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$8.1M· 2.6% of total· 0.0% port· 92K sh· +$8.1M QoQ· Q2 2026
Schonfeld Strategic Advisors LLCAdded
Hedge Fund
$7.9M· 2.6% of total· 0.0% port· 90K sh· +$2.8M QoQ· Q2 2026
Man Group plcReduced
Hedge Fund
$7.7M· 2.5% of total· 0.0% port· 88K sh· $-9.7M QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$5.8M· 1.9% of total· 0.0% port· 66K sh· — QoQ· Q2 2026
Holocene Advisors, LPAdded
Hedge Fund
$4.6M· 1.5% of total· 0.0% port· 52K sh· +$896K QoQ· Q2 2026
PineBridge Investments, L.P.Reduced
Hedge Fund
$4.1M· 1.3% of total· 0.0% port· 48K sh· $-1.4M QoQ· Q3 2025
Gotham Asset Management, LLCReduced
Hedge Fund
$1.3M· 0.4% of total· 0.0% port· 14K sh· $-18K QoQ· Q2 2026
ExodusPoint Capital Management, LPAdded
Hedge Fund
$981K· 0.3% of total· 0.0% port· 11K sh· — QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$727K· 0.2% of total· 0.0% port· 8K sh· — QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$392K· 0.1% of total· 0.0% port· 4K sh· — QoQ· Q2 2026
1–10 of 20
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