Stock Ownership/BLK

BLACKROCK INC COM (BLK): Ownership & Insider Activity

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

Reported Holders
40
13F filers
Aggregate Value
$6.7B
Across holders
Last Price
$1172.61
2026-08-24
Sector
Financials
GICS
Quarterly fund activity26 increased11 reduced1 exited
Full exits: CAXTON ASSOCIATES LLP
Institutional Holders of BLK
↗
40 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
Fisher Asset Management, LLC
CIK 0000850529
Institutional Manager1.40M$1.3B20.0%0.4%Reduced$-363.2MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund1.10M$1.1B15.7%0.1%Added+$860.9MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund657K$632.0M9.4%0.2%Added+$616.2MQ2 2026
ValueAct Holdings, L.P.
CIK 0001418814
Hedge Fund582K$559.3M8.3%9.9%Added+$34.2MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund495K$476.2M7.1%0.2%Reduced+$359.6MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund485K$466.7M6.9%0.3%Added+$281.1MQ2 2026
BALYASNY ASSET MANAGEMENT LLC
CIK 0001218710
Hedge Fund335K$322.1M4.8%0.4%Added+$319.4MQ2 2026
Rockefeller Capital Management L.P.
CIK 0001739439
Hedge Fund236K$226.6M3.4%0.3%Added$-1.2BQ2 2026
MARKEL CORP (MKL)
CIK 0001096343
Hedge Fund220K$211.7M3.1%1.6%Unchanged$-188.7MQ2 2026
Point72 Asset Management, L.P.
CIK 0001603466
Hedge Fund179K$172.6M2.6%0.2%Added+$166.0MQ2 2026
Fisher Asset Management, LLCReduced
Institutional Manager
$1.3B· 20.0% of total· 0.4% port· 1.40M sh· $-363.2M QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$1.1B· 15.7% of total· 0.1% port· 1.10M sh· +$860.9M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$632.0M· 9.4% of total· 0.2% port· 657K sh· +$616.2M QoQ· Q2 2026
ValueAct Holdings, L.P.Added
Hedge Fund
$559.3M· 8.3% of total· 9.9% port· 582K sh· +$34.2M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$476.2M· 7.1% of total· 0.2% port· 495K sh· +$359.6M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$466.7M· 6.9% of total· 0.3% port· 485K sh· +$281.1M QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$322.1M· 4.8% of total· 0.4% port· 335K sh· +$319.4M QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$226.6M· 3.4% of total· 0.3% port· 236K sh· $-1.2B QoQ· Q2 2026
MARKEL CORP (MKL)Unchanged
Hedge Fund
$211.7M· 3.1% of total· 1.6% port· 220K sh· $-188.7M QoQ· Q2 2026
Point72 Asset Management, L.P.Added
Hedge Fund
$172.6M· 2.6% of total· 0.2% port· 179K sh· +$166.0M QoQ· Q2 2026
Qube Research & Technologies LtdAdded
Hedge Fund
$128.6M· 1.9% of total· 0.1% port· 134K sh· +$122.8M QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$123.1M· 1.8% of total· 0.1% port· 128K sh· — QoQ· Q2 2026
SHAW D E & CO INCReduced
Hedge Fund
$121.2M· 1.8% of total· 0.1% port· 126K sh· +$54.5M QoQ· Q2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.Added
Hedge Fund
$116.0M· 1.7% of total· 0.2% port· 121K sh· +$9.3M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCAdded
Hedge Fund
$114.2M· 1.7% of total· 0.2% port· 119K sh· — QoQ· Q2 2026
VOLORIDGE INVESTMENT MANAGEMENT, LLCAdded
Hedge Fund
$105.9M· 1.6% of total· 0.5% port· 110K sh· +$35.8M QoQ· Q2 2026
Woodline Partners LPAdded
Hedge Fund
$86.6M· 1.3% of total· 0.3% port· 90K sh· +$31.5M QoQ· Q2 2026
Hudson Bay Capital Management LPAdded
Hedge Fund
$74.7M· 1.1% of total· 0.2% port· 78K sh· +$59.5M QoQ· Q2 2026
Squarepoint Ops LLCReduced
Hedge Fund
$64.1M· 1.0% of total· 0.1% port· 67K sh· +$34.5M QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded
Hedge Fund
$60.6M· 0.9% of total· 0.0% port· 63K sh· +$25.1M QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$58.1M· 0.9% of total· 0.1% port· 60K sh· +$55.3M QoQ· Q2 2026
Clearbridge Investments, LLCAdded
Hedge Fund
$45.3M· 0.7% of total· 0.0% port· 47K sh· +$7.5M QoQ· Q2 2026
HARRIS ASSOCIATES L PReduced
Institutional Manager
$42.9M· 0.6% of total· 0.1% port· 45K sh· $-9.6M QoQ· Q2 2026
Schonfeld Strategic Advisors LLCAdded
Hedge Fund
$33.9M· 0.5% of total· 0.1% port· 35K sh· +$28.6M QoQ· Q2 2026
Gotham Asset Management, LLCReduced
Hedge Fund
$19.3M· 0.3% of total· 0.0% port· 20K sh· $-237K QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$16.3M· 0.2% of total· 0.0% port· 17K sh· +$12.8M QoQ· Q2 2026
FRED ALGER MANAGEMENT, LLCAdded
Hedge Fund
$11.2M· 0.2% of total· 0.0% port· 12K sh· +$737K QoQ· Q2 2026
Walleye Capital LLCAdded
Hedge Fund
$6.7M· 0.1% of total· 0.0% port· 7K sh· +$3.0M QoQ· Q2 2026
Holocene Advisors, LPReduced
Hedge Fund
$5.9M· 0.1% of total· 0.0% port· 6K sh· $-24.3M QoQ· Q2 2026
Fulcrum Asset Management LLPAdded
Hedge Fund
$4.8M· 0.1% of total· 0.5% port· 5K sh· — QoQ· Q2 2026
Bridgewater Associates, LPAdded
Hedge Fund
$4.5M· 0.1% of total· 0.0% port· 5K sh· — QoQ· Q2 2026
GAMCO INVESTORS, INC. ET ALReduced
Institutional Manager
$4.4M· 0.1% of total· 0.0% port· 5K sh· $-58K QoQ· Q2 2026
PineBridge Investments, L.P.Reduced
Hedge Fund
$3.7M· 0.1% of total· 0.0% port· 3K sh· $-4.1M QoQ· Q3 2025
CAPSTONE INVESTMENT ADVISORS, LLCAdded
Hedge Fund
$3.1M· 0.0% of total· 0.0% port· 3K sh· $-16.0M QoQ· Q2 2026
TCW GROUP INCAdded
Hedge Fund
$2.2M· 0.0% of total· 0.0% port· 2K sh· +$39K QoQ· Q2 2026
Verition Fund Management LLCReduced
Hedge Fund
$1.0M· 0.0% of total· 0.0% port· 1K sh· +$54K QoQ· Q2 2026
Brevan Howard Capital Management LPReduced
Hedge Fund
$836K· 0.0% of total· 0.0% port· 869 sh· $-3.8M QoQ· Q2 2026
DODGE & COXUnchanged
Institutional Manager
$684K· 0.0% of total· 0.0% port· 711 sh· +$0 QoQ· Q2 2026
ArrowMark Colorado Holdings LLCUnchanged
Hedge Fund
$673K· 0.0% of total· 0.0% port· 700 sh· +$0 QoQ· Q2 2026
Rokos Capital Management LLPAdded
Hedge Fund
$413K· 0.0% of total· 0.0% port· 430 sh· — QoQ· Q2 2026
1–10 of 40
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