BLK
BLACKROCK INCData as of 2026 Q1 (03-31) · 13F snapshot
Summary
BLACKROCK INC (BLK) is held by 7 tracked hedge-fund managers, a combined reported value of ~$2.51B; the largest are Andreas Halvorsen, Ken Griffin, Izzy Englander. This quarter: 2 added, 1 trimmed, 2 closed. 20 members of Congress have disclosed STOCK Act trades. Data as of 2026 Q1, from public SEC 13F filings, delayed up to ~45 days.
Attention · MediumThis quarter · Mixed
Gurus holding7
Congress trades20
Price$1062vs quarter-end+10.44%
Sectors1
This quarter's moves
Top holderAndreas HalvorsenNew0
Added2
Trimmed / sold3
Andreas HalvorsenBig add
Value $722.25M1.9% of portfolio619,4922025 Q3
Ken GriffinAdd
Value $676.19M0.5% of portfolio703,1072026 Q1
Value $616.99M0.5% of portfolio641,5582026 Q1
Value $137.72M— of portfolio143,2002026 Q1
Value $116.66M— of portfolio121,3002026 Q1
Value $109.15M— of portfolio113,5002026 Q1
Value $36.64M— of portfolio38,1002026 Q1
Joel GreenblattHold
Value $19.51M0.1% of portfolio20,2852026 Q1
Value $11.64M— of portfolio12,1002026 Q1
Value $6.54M— of portfolio6,8002026 Q1
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| Andreas Halvorsen | $722.25M | 1.9% | Big add |
| Ken Griffin | $676.19M | 0.5% | Add |
| Izzy Englander | $616.99M | 0.5% | Add |
| Ken GriffinCALL | $137.72M | — | — |
| Izzy EnglanderCALL | $116.66M | — | — |
| Ken GriffinPUT | $109.15M | — | — |
| Izzy EnglanderPUT | $36.64M | — | — |
| Joel Greenblatt | $19.51M | 0.1% | Hold |
| Steven CohenCALL | $11.64M | — | — |
| Steven CohenPUT | $6.54M | — | — |
Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.