InvestorLens

BLK — BLACKROCK INC

Financial Services · Asset Management

Sign in to save4 tracked investors reported this
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
80
Institutional Conviction
Net accumulation · 4 buying vs 1 selling last quarter
64
Macro Tailwind
Macro conditions are mixed for this sector
52
Congressional Activity
0 congressional purchases, 3 sales disclosed in the last 6 months
Why? — Evidence & Confidence ▾

Of 5 tracked investors who changed their BLK position last quarter, 4 bought and 1 sold (80% buy-side). Macro conditions are mixed for this sector (Macro Tailwind 52/100 in a Squeeze regime). 0 congressional purchases, 3 sales disclosed in the last 6 months.

Supporting evidence
  • +4 tracked investors added or increased positions last quarter (Paul Tudor Jones, Izzy Englander, Ken Griffin, …)
  • +4 tracked investors reported holding BLK at their latest filing
Contradicting evidence — always shown
  • −1 tracked investor reduced or exited last quarter (0 reduced, 1 sold out)
  • −Congressional disclosures lean toward selling (3 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 8/4/2026.

About BLACKROCK INC (BLK)

BLACKROCK INC (BLK) appears in the most recent 13F filings of 4 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 $923M. Across recent filings, tracked investors recorded 28 new positions, 1 increased, 0 reduced, and 1 exited. All data sourced from SEC 13F filings.

Smart Money Consensus™

Based on recent institutional activity in BLK

97
/100
Strong Institutional Accumulation
Added / Increased29
Reduced0
Exited1
BearishBullish
Crowded Trade Score™

How many top investors track BLK

27
/100
Emerging Interest
4investors

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
Other
96% of tracked value
Institutions
4
tracked investors
Total Reported
$1.8B
combined 13F value
Sectors2
  • Other96.1%
  • Hedge Funds3.9%
Other(3)
96.1%
Hedge Funds(1)
3.9%

Tracked investors reporting BLK

  • Ken GriffinMar 31, 2026
    Citadel Advisors
    Shares
    959.8K
    Value
    $923.1M
    % Portfolio
    0.15%
  • Izzy EnglanderMar 31, 2026
    Millennium Management
    Shares
    801K
    Value
    $770.3M
    % Portfolio
    0.32%
  • Steve CohenMar 31, 2026
    Point72 Asset Management
    Shares
    72.1K
    Value
    $69.3M
    % Portfolio
    0.09%
  • Paul Tudor JonesMar 31, 2026
    Tudor Investment Corp
    Shares
    4.8K
    Value
    $4.6M
    % Portfolio
    0.01%

Recent activity

Frequently asked questions

How many institutional investors hold BLK?
4 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 $923M.
Did institutional ownership of BLK increase or decrease?
Across recent 13F filings, tracked investors recorded 28 new positions, 1 increased, 0 reduced, and 1 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.
BLK (BLACKROCK INC) — Institutional Holders & 13F History — InvestorLens