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Who owns Alnylam Pharmaceuticals (ALNY) stock

749 funds reported Alnylam Pharmaceuticals (ALNY) shares in their latest 13F filings, worth $43.4B in all. The largest holder is Vanguard Group ($5.4B). Last quarter 362 funds added to their stakes and 334 cut them. Members of Congress and other officials disclosed 1 trade (0 buys, 1 sales).

Largest holders of ALNY (13F)Largest holders of ALNY (13F)Vanguard Group$5.4BFMR LLC$4.5BCapital World Investors$3.4BBlackRock$3.3BCapital Research Global Investors$2.9BVanguard Portfolio Management LLC$2.0BVanguard Capital Management LLC$1.8BT. Rowe Price Investment Manageme…$1.7BInvesco$1.1BState Street$1.1B

Largest holders (13F)

FundSharesValueChangeQuarter
Vanguard Group13,553,932$5.4Bdecrease2025-12-31
FMR LLC15,023,962$4.5Bincrease2026-06-30
Capital World Investors11,144,846$3.4Bincrease2026-06-30
BlackRock10,907,675$3.3Bincrease2026-06-30
Capital Research Global Investors9,750,699$2.9Bincrease2026-06-30
Vanguard Portfolio Management LLC6,538,390$2.0Bincrease2026-06-30
Vanguard Capital Management LLC6,029,478$1.8Bincrease2026-06-30
T. Rowe Price Investment Management5,642,173$1.7Bincrease2026-06-30
Invesco3,754,318$1.1Bdecrease2026-06-30
State Street3,555,689$1.1Bincrease2026-06-30
Geode Capital Management, LLC2,635,840$791Mdecrease2026-06-30
Baillie Gifford2,439,889$734Mdecrease2026-06-30
Wellington Management Group LLP2,110,407$635Mincrease2026-06-30
Orbis Allan Gray1,987,407$598Mincrease2026-06-30
Dodge & COX1,955,393$589Mincrease2026-06-30

Trades by Congress and other officials

DateWhoTradeAmount
2026-08-11Cory A Bookersale$1K–$15K

Alnylam Pharmaceuticals' latest quarter

Alnylam Pharmaceuticals, Q3 2026: revenue $1.5B (+17% year over year), operating margin 23.7%, net earnings $2.2B, operating cash flow $341M. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most ALNY stock?

By the latest 13F filings: Vanguard Group ($5.4B); FMR LLC ($4.5B); Capital World Investors ($3.4B); BlackRock ($3.3B); Capital Research Global Investors ($2.9B).

Has Congress traded ALNY stock?

Officials disclosed 1 trade on file: 0 buys and 1 sales. The latest: Cory A Booker, sale on 2026-08-11.

What is the short interest in ALNY?

6,568,786 shares were sold short at the 2026-10-15 settlement, -14.82% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.