Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.
BX
BLACKSTONE INCData as of 2026 Q1 (03-31) · 13F snapshot
Summary
BLACKSTONE INC (BX) is held by 11 tracked hedge-fund managers, a combined reported value of ~$1.48B; the largest are Stephen Mandel, Ken Griffin, Ken Griffin. This quarter: 2 new, 2 added, 2 trimmed, 1 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 · HighThis quarter · Mixed
Gurus holding11
Congress trades20
Price$122.79vs quarter-end+6.78%
Sectors1
This quarter's moves
Top holderStephen MandelNew2
Added2
Trimmed / sold3
Stephen MandelNew large stake
Value $290.51M2.5% of portfolio2,219,0232023 Q4
Value $255.46M— of portfolio2,221,6002026 Q1
Value $166.18M— of portfolio1,445,2002026 Q1
Value $130.64M— of portfolio1,136,1002026 Q1
Value $61.97M— of portfolio538,9002026 Q1
Value $24.94M— of portfolio216,9002026 Q1
Value $22.16M— of portfolio192,7002026 Q1
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| Stephen Mandel | $290.51M | 2.5% | New large stake |
| Ken GriffinPUT | $255.46M | — | — |
| Ken GriffinCALL | $166.18M | — | — |
| Izzy EnglanderPUT | $130.64M | — | — |
| Izzy EnglanderCALL | $61.97M | — | — |
| Steven CohenPUT | $24.94M | — | — |
| Steven CohenCALL | $22.16M | — | — |