Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.
ALNY
ALNYLAM PHARMACEUTICALS INCData as of 2026 Q1 (03-31) · 13F snapshot
Summary
ALNYLAM PHARMACEUTICALS INC (ALNY) is held by 9 tracked hedge-fund managers, a combined reported value of ~$285.22M; the largest are Izzy Englander, Ray Dalio, Stanley Druckenmiller. This quarter: 3 added, 1 trimmed. 13 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 · Heating up
Gurus holding9
Congress trades13
Price$282.85vs quarter-end-14.51%
Sectors1
This quarter's moves
Top holderIzzy EnglanderNew0
Added3
Trimmed / sold1
Value $21.13M1.1% of portfolio88,9102022 Q4
Value $16.74M— of portfolio50,6002026 Q1
Value $12.31M— of portfolio37,2002026 Q1
Value $7.54M— of portfolio22,8002026 Q1
Value $7.41M— of portfolio22,4002026 Q1
Value $1.85M— of portfolio5,6002026 Q1
Value $231.6K— of portfolio7002026 Q1
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| Stanley Druckenmiller | $21.13M | 1.1% | Hold |
| Ken GriffinCALL | $16.74M | — | — |
| Ken GriffinPUT | $12.31M | — | — |
| Izzy EnglanderPUT | $7.54M | — | — |
| Izzy EnglanderCALL | $7.41M | — | — |
| Steven CohenCALL | $1.85M | — | — |
| Steven CohenPUT | $231.6K | — | — |