How many institutional investors hold BLK?

5 tracked institutional investors disclosed a position in BLK (BLACKROCK INC) in their most recent 13F filing.

Who is the largest institutional holder of BLK?

Ken Griffin, Citadel Advisors, holds the largest disclosed position in BLK, valued at $1.5B.

What sector is BLK in?

BLACKROCK INC is classified in the Financial Services GICS sector, Asset Management industry.

Where does this BLK ownership data come from?

SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.

BLK — BLACKROCK INC

Name: BLACKROCK INC (BLK) — Institutional Ownership
Creator: InvestorLens
License: https://www.sec.gov/about/website-policies

Financial Services · Asset Management

For educational research only.InvestorLens analyzes public regulatory filings (SEC EDGAR, STOCK Act PTRs) that may be delayed by 45 days or more. Information shown is historical and is not financial, legal, or tax advice, nor a recommendation or solicitation to buy or sell any security. Always do your own research.

InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.

Sourced from SEC EDGAR public filings

Why are billionaires buying BLK?

Built from public SEC filings and public economic data. Not a recommendation.

Confidence

Institutional Conviction

Mixed · 3 buying vs 2 selling last quarter

Macro Tailwind

Macro conditions are mixed for this sector

Congressional Activity

0 congressional purchases, 2 sales disclosed in the last 6 months

Why? — Evidence & Confidence ▾

Of 5 tracked investors who changed their BLK position last quarter, 3 bought and 2 sold (60% buy-side). Macro conditions are mixed for this sector (Macro Tailwind 56/100 in a Overheat regime). 0 congressional purchases, 2 sales disclosed in the last 6 months.

Supporting evidence

+3 tracked investors added or increased positions last quarter (Ray Dalio, Steve Cohen, Paul Tudor Jones)
+5 tracked investors reported holding BLK at their latest filing
+Macro Health is 56/100 in a Overheat regime — historically acceptable for Financial Servicessource

Contradicting evidence — always shown

−2 tracked investors reduced or exited last quarter (2 reduced, 0 sold out)
−Congressional disclosures lean toward selling (2 sales vs 0 purchases, 6 months)
−13F data is disclosed up to 45 days after quarter end — positions may have changed since

Know the limits

· 13F disclosure lag (up to 45 days)
· Tracked investors are a sample, not the whole market
· Sector regime fit is a historical average, not a guarantee

Every InvestorLens score shows its evidence — including what argues against it. Model conviction-v1 · generated 9/18/2026.

About BLACKROCK INC (BLK)

BLACKROCK INC (BLK) appears in the most recent 13F filings of 5 tracked institutional investors. BLACKROCK INC is classified in the Financial Services sector (Asset Management industry). The largest disclosed position is held by Ken Griffin (Citadel Advisors), valued at $1.5B. Across recent filings, tracked investors recorded 8 new positions, 17 increased, 10 reduced, and 4 exited. All data sourced from SEC 13F filings.

Smart Money Consensus™

Based on recent institutional activity in BLK

/100

Institutional Accumulation

Added / Increased25

Reduced10

Exited4

BearishBullish

Crowded Trade Score™

How many top investors track BLK

/100

Emerging Interest

5investors

A small number of top investors own this.

UndiscoveredCrowded

151015+

BLK Ownership Composition

How BLACKROCK INC is held across tracked investor types, based on reported 13F positions.

Dominant Type

Multi-Strategy / Quant

99% of tracked value

Institutions

tracked investors

Total Reported

$2.3B

combined 13F value

Multi-Strategy / Quant98.8%
Macro1.2%

Multi-Strategy / Quant(3)

98.8%

Macro(2)

1.2%

Tracked investors currently reporting BLK

1 tracked investor has since exited this position — listed separately below.

Investor	Firm	Shares	Market value	% of portfolio	As of
Ken Griffin	Citadel Advisors	1.6M	$1.5B	0.17%	Jun 30, 2026
Izzy Englander	Millennium Management	619.4K	$595.6M	0.22%	Jun 30, 2026
Steve Cohen	Point72 Asset Management	194.1K	$186.6M	0.21%	Jun 30, 2026
Paul Tudor Jones	Tudor Investment Corp	24.4K	$23.5M	0.03%	Jun 30, 2026
Ray Dalio	Bridgewater Associates	4.7K	$4.5M	0.02%	Jun 30, 2026

Ken GriffinJun 30, 2026
Citadel Advisors
Shares
1.6M
Value
$1.5B
% Portfolio
0.17%
Izzy EnglanderJun 30, 2026
Millennium Management
Shares
619.4K
Value
$595.6M
% Portfolio
0.22%
Steve CohenJun 30, 2026
Point72 Asset Management
Shares
194.1K
Value
$186.6M
% Portfolio
0.21%
Paul Tudor JonesJun 30, 2026
Tudor Investment Corp
Shares
24.4K
Value
$23.5M
% Portfolio
0.03%
Ray DalioJun 30, 2026
Bridgewater Associates
Shares
4.7K
Value
$4.5M
% Portfolio
0.02%

Previously held BLK

These investors reported BLK in an earlier quarter but not in their most recent 13F. Figures below are their last reported position, not a current holding.

Investor	Firm	Last reported shares	Value then	Last held
Andreas Halvorsen	Viking Global Investors	619.5K	$722.2M	Sep 30, 2025

Recent activity

Investor	Action	Δ %	Current value	Filing date
Andreas Halvorsen	New	—	$204.7M	Aug 14, 2025
Andreas Halvorsen	Increased	217.52%	$722.2M	Nov 14, 2025
Andreas Halvorsen	Sold	-100.00%	$0	Feb 17, 2026
Izzy Englander	Increased	15.13%	$158.1K	Nov 14, 2024
Izzy Englander	Increased	29.85%	$209.6K	Feb 14, 2025
Izzy Englander	Reduced	-26.33%	$197.2K	May 15, 2025
Izzy Englander	Increased	53.17%	$227K	Aug 14, 2025
Izzy Englander	Increased	2918.27%	$710.7M	Feb 17, 2026
Izzy Englander	Increased	20.62%	$770.3M	May 15, 2026
Izzy Englander	Reduced	-96.01%	$959.9K	Aug 14, 2026
Ken Griffin	Reduced	-85.72%	$194.3K	Nov 14, 2024
Ken Griffin	Increased	175.44%	$203K	May 15, 2025
Ken Griffin	Reduced	-37.96%	$289.5K	Aug 14, 2025
Ken Griffin	Sold	-100.00%	$0	Nov 14, 2025
Ken Griffin	Reduced	-96.70%	$286.3K	Aug 14, 2026
Ray Dalio	New	—	$3.8K	Nov 13, 2025
Ray Dalio	Increased	39.84%	$4.9K	Feb 13, 2026
Ray Dalio	Sold	-100.00%	$0	May 15, 2026
Ray Dalio	New	—	$4.5M	Aug 14, 2026
Steve Cohen	Increased	38400.00%	$36.6M	Nov 14, 2024
Steve Cohen	Reduced	-58.70%	$16.3M	Feb 14, 2025
Steve Cohen	Increased	282.39%	$57.5M	Jul 21, 2025
Steve Cohen	Reduced	-98.68%	$839.4K	Aug 14, 2025
Steve Cohen	Increased	812.50%	$8.5M	Nov 14, 2025
Steve Cohen	Increased	2345.14%	$191.1M	Feb 17, 2026
Steve Cohen	Reduced	-59.63%	$69.3M	May 15, 2026
Steve Cohen	Increased	169.35%	$186.6M	Aug 14, 2026
Paul Tudor Jones	Increased	593.33%	$8.2M	Aug 14, 2024
Paul Tudor Jones	Sold	-100.00%	$0	Nov 14, 2024
Paul Tudor Jones	New	—	$10.6M	Feb 14, 2025
Paul Tudor Jones	Increased	167.96%	$26.1M	May 15, 2025
Paul Tudor Jones	Reduced	-9.78%	$26.1M	Aug 14, 2025
Paul Tudor Jones	Increased	137.75%	$69M	Dec 9, 2025
Paul Tudor Jones	Reduced	-95.61%	$4.6M	May 15, 2026
Paul Tudor Jones	Increased	408.33%	$23.5M	Aug 14, 2026
Steve Cohen	New	—	$78.7K	Sep 16, 2024
Ken Griffin	New	—	$1.4M	Aug 14, 2024
Izzy Englander	New	—	$211.8K	May 15, 2024
Paul Tudor Jones	New	—	$1.3M	May 15, 2024

Andreas Halvorsen
New
$204.7MAug 14, 2025
Andreas Halvorsen
Increased
$722.2M(217.52%)Nov 14, 2025
Andreas Halvorsen
Sold
$0(-100.00%)Feb 17, 2026
Izzy Englander
Increased
$158.1K(15.13%)Nov 14, 2024
Izzy Englander
Increased
$209.6K(29.85%)Feb 14, 2025
Izzy Englander
Reduced
$197.2K(-26.33%)May 15, 2025
Izzy Englander
Increased
$227K(53.17%)Aug 14, 2025
Izzy Englander
Increased
$710.7M(2918.27%)Feb 17, 2026
Izzy Englander
Increased
$770.3M(20.62%)May 15, 2026
Izzy Englander
Reduced
$959.9K(-96.01%)Aug 14, 2026
Ken Griffin
Reduced
$194.3K(-85.72%)Nov 14, 2024
Ken Griffin
Increased
$203K(175.44%)May 15, 2025
Ken Griffin
Reduced
$289.5K(-37.96%)Aug 14, 2025
Ken Griffin
Sold
$0(-100.00%)Nov 14, 2025
Ken Griffin
Reduced
$286.3K(-96.70%)Aug 14, 2026
Ray Dalio
New
$3.8KNov 13, 2025
Ray Dalio
Increased
$4.9K(39.84%)Feb 13, 2026
Ray Dalio
Sold
$0(-100.00%)May 15, 2026
Ray Dalio
New
$4.5MAug 14, 2026
Steve Cohen
Increased
$36.6M(38400.00%)Nov 14, 2024
Steve Cohen
Reduced
$16.3M(-58.70%)Feb 14, 2025
Steve Cohen
Increased
$57.5M(282.39%)Jul 21, 2025
Steve Cohen
Reduced
$839.4K(-98.68%)Aug 14, 2025
Steve Cohen
Increased
$8.5M(812.50%)Nov 14, 2025
Steve Cohen
Increased
$191.1M(2345.14%)Feb 17, 2026
Steve Cohen
Reduced
$69.3M(-59.63%)May 15, 2026
Steve Cohen
Increased
$186.6M(169.35%)Aug 14, 2026
Paul Tudor Jones
Increased
$8.2M(593.33%)Aug 14, 2024
Paul Tudor Jones
Sold
$0(-100.00%)Nov 14, 2024
Paul Tudor Jones
New
$10.6MFeb 14, 2025
Paul Tudor Jones
Increased
$26.1M(167.96%)May 15, 2025
Paul Tudor Jones
Reduced
$26.1M(-9.78%)Aug 14, 2025
Paul Tudor Jones
Increased
$69M(137.75%)Dec 9, 2025
Paul Tudor Jones
Reduced
$4.6M(-95.61%)May 15, 2026
Paul Tudor Jones
Increased
$23.5M(408.33%)Aug 14, 2026
Steve Cohen
New
$78.7KSep 16, 2024
Ken Griffin
New
$1.4MAug 14, 2024
Izzy Englander
New
$211.8KMay 15, 2024
Paul Tudor Jones
New
$1.3MMay 15, 2024

Frequently asked questions

How many institutional investors hold BLK?: 5 tracked institutional investors disclosed a position in BLK (BLACKROCK INC) in their most recent 13F filing.
Who is the largest institutional holder of BLK?: Ken Griffin, Citadel Advisors, holds the largest disclosed position in BLK, valued at $1.5B.
Did institutional ownership of BLK increase or decrease?: Across recent 13F filings, tracked investors recorded 8 new positions, 17 increased, 10 reduced, and 4 fully exited BLK.
What sector is BLK in?: BLACKROCK INC is classified in the Financial Services GICS sector, Asset Management industry.
Where does this BLK ownership data come from?: SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.