Blackrock
BLK
2,281 hedge funds and large institutions have $135B invested in Blackrock in 2025 Q3 according to their latest regulatory filings, with 192 funds opening new positions, 876 increasing their positions, 832 reducing their positions, and 101 closing their positions.
90% more first-time investments, than exits
New positions opened: 192 | Existing positions closed: 101
9% more capital invested
Capital invested by funds: $124B → $135B (+$10.6B)
5% more funds holding in top 10
Funds holding in top 10: 43 → 45 (+2)
3% more funds holding
Funds holding: 2,225 → 2,281 (+56)
5% more repeat investments, than reductions
Existing positions increased: 876 | Existing positions reduced: 832
1.76% less ownership
Funds ownership: 76.63% → 74.87% (-1.8%)
51% less call options, than puts
Call options by funds: $988M | Put options by funds: $2.04B
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Viking Global Investors
Stamford,
Connecticut
|
+$474M |
| 2 |
DZ Bank
Frankfurt Am Main,
Germany
|
+$377M |
| 3 |
Millennium Management
New York
|
+$368M |
| 4 |
PFBT
Parkside Financial Bank & Trust
Saint Louis,
Missouri
|
+$273M |
| 5 |
Bank of America
Charlotte,
North Carolina
|
+$254M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citigroup
New York
|
-$427M |
| 2 |
UBS AM
Chicago,
Illinois
|
-$319M |
| 3 |
First Trust Advisors
Wheaton,
Illinois
|
-$281M |
| 4 |
Ameriprise
Minneapolis,
Minnesota
|
-$234M |
| 5 |
Deutsche Bank
Frankfurt Am Main Ge,
Germany
|
-$227M |
BLK Hedge Fund Activity: Q3 2025 in Review
2,281 of the 7,640 institutional investors tracked by Wall St. Rank reported a position in Blackrock (BLK) for Q3 2025, worth a combined $135B — up 8.5% from $124B a quarter earlier.
Buyers outnumbered sellers: 192 funds opened new BLK positions and 101 closed out — a net gain of 91 holders — while 876 added to existing stakes and 832 trimmed.
The largest buyer was Viking Global Investors, adding an estimated $474M. The largest seller was Citigroup, cutting an estimated $427M.
- 2,281 institutional investors held Blackrock (BLK) as of Q3 2025, up from 2,225 in Q2 2025.
- Funds reported $135B of Blackrock stock for Q3 2025, up 8.5% quarter-over-quarter.
- 192 funds opened new Blackrock positions in Q3 2025 and 101 closed out, a net change of +91 holders.
- The largest Blackrock buyer in Q3 2025 was Viking Global Investors, an estimated $474M added.
- The largest Blackrock seller in Q3 2025 was Citigroup, an estimated $427M sold.
Based on aggregated 13F filings for Q3 2025.