Who owns BLK? 13F holders and whale ownership
BLK is tracked across public portfolios in Whale Analyzer. This page answers who owns BLK, which top funds are buying BLK, aggregate disclosed value, and recent position changes based on public data. Capital Group is the largest reported holder at $4.43B; the top five funds control 100.0% of reported ownership; institutions were net buying last quarter (2 increased, 1 reduced); the stock trades above the aggregate whale cost basis of $622.57. Top tracked holders include Capital Group, ValueAct Capital, NPS Korea, and Tom Gayner.
Continue to the live BLK dashboardTop holders
| Investor | Reported value | Shares | Change |
|---|---|---|---|
| Capital Group 13F portfolio Capital Research Global Investors holdings | $4.43B | 4.6M | Increased |
| ValueAct Capital 13F portfolio ValueAct Capital Management holdings | $525.2M | 546.1K | Reduced |
| NPS Korea 13F portfolio National Pension Service holdings | $308.8M | 321.1K | Increased |
| Tom Gayner 13F portfolio Markel Group holdings | $211.8M | 220.2K | Held |
Ownership concentration
Reported ownership of BLK is highly concentrated across tracked institutions.
- Single largest holder: 80.9% of reported ownership
- Top 5 holders: 100.0%
- Top 10 holders: 100.0%
Whale activity this quarter
Across 4 tracked institutions, 2 increased, 1 reduced, 1 held. Net positioning is net buying.
- Capital Group — Capital Research Global Investors ($4.43B) (▲ 20.1% qoq shares) · avg cost $589.22
- ValueAct Capital — ValueAct Capital Management ($525.2M) (▼ 21.4% qoq shares) · avg cost $1027.77
- NPS Korea — National Pension Service ($308.8M) (▲ 0.9% qoq shares) · avg cost $587.97
- Tom Gayner — Markel Group ($211.8M) (→ 0.0% qoq shares) · avg cost $366.49
Whale cost basis vs current price
The aggregate tracked cost basis is $622.57 versus a current price of $964.71, so BLK trades above its cost basis (+55.0%). Average unrealized P&L across tracked holders: 87%.
Sector positioning — Financials
BLK sits within the Financials sector alongside 84 other tracked names. Compare whale ownership across peers:
How to use this page
Values are reported public positions from tracked 13F filers and disclosures — not real-time ownership totals. Open the live BLK dashboard for price charts and cross-investor scans, or read the SEC 13F guide.
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Learn more in Whale Analyzer Academy
Deepen your read on BLK with these Whale Analyzer Academy guides:
Frequently asked questions
Who owns BLK stock?
Whale Analyzer tracks 4 public institutional holders of BLK with a combined reported value of $5.48B. See the holder table above for the largest tracked positions.
Which top funds are buying BLK?
Tracked institutions were net buying last quarter — 2 increased, 1 reduced, 1 held. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.
How concentrated is BLK ownership?
The top five tracked holders report 100.0% of aggregate ownership.
Is BLK above or below the whale cost basis?
The aggregate tracked cost basis is $622.57 versus a current price of $964.71 (+55.0%).
What does 13F ownership mean for BLK?
Use the interactive BLK dashboard on Whale Analyzer for real-time holder analysis, or read our 13F Alpha Signals Guide.