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Alnylam Pharmaceuticals ALNY · USD

Health Care · Biotechnology · US listing · 🇺🇸 United States

Nasdaq-100

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156.61

+0.43%

Close of 9 Nov 2026, in USD

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Reference data, closing prices and charts across 45,000 companies, plus crypto, commodities and currencies.

Largest shareholders

As filed, so dates differ, and a group and its funds can both appear.

HolderSharesStakeChangeFiled
FMR LLC14.6m11.04%−1.3m31 Mar 2026
CAPITAL WORLD INVESTORS10.8m8.18%−5.5m31 Mar 2026
BLACKROCK, INC.10.4m7.91%+44k31 Mar 2026
CAPITAL RESEARCH GLOBAL INVESTORS9.5m7.17%+2.7m31 Mar 2026
VANGUARD PORTFOLIO MANAGEMENT LLC6.5m4.91%+6.5m31 Mar 2026
JPMORGAN CHASE & CO6.3m4.79%+1.6m31 Mar 2026
VANGUARD CAPITAL MANAGEMENT LLC5.9m4.50%+5.9m31 Mar 2026
T. ROWE PRICE INVESTMENT MANAGEMENT, INC.5.2m3.93%+3.4m31 Mar 2026
STATE STREET CORP3.3m2.52%+93.7k31 Mar 2026
INVESCO LTD.2.8m2.11%−184.7k31 Mar 2026
GEODE CAPITAL MANAGEMENT, LLC2.7m2.01%+9.7k31 Mar 2026
BAILLIE GIFFORD & CO2.5m1.89%−107.1k31 Mar 2026
TWO SIGMA INVESTMENTS, LP2m1.51%+1.4m31 Mar 2026
WELLINGTON MANAGEMENT GROUP LLP1.9m1.47%+307k31 Mar 2026
DODGE & COX1.9m1.46%−35.2k31 Mar 2026

Insider trades

Purchases and sales by directors and officers, as filed with the regulator

DateWhoTypeSharesPriceValue
5 Mar 2026 ↗Fitzgerald Kevin JosephCSO & EVP, Head of ResearchSale658323.98$213,177
5 Mar 2026 ↗Garg PushkalEVP Chief R&DSale2.4k323.96$778,812
4 Mar 2026 ↗Tanguler TolgaEVP, Chief Commercial OfficerSale2.3k323.08$745,984
4 Mar 2026 ↗Greenstreet YvonneChief Executive OfficerSale2.9k323.08$947,581
4 Mar 2026 ↗Poulton Jeffrey V.EVP, Chief Financial OfficerSale2.5k323.08$797,351
4 Mar 2026 ↗Fitzgerald Kevin JosephCSO & EVP, Head of ResearchSale633323.08$204,508
4 Mar 2026 ↗Garg PushkalEVP Chief R&DSale2.3k323.08$745,984
3 Mar 2026 ↗Fitzgerald Kevin JosephCSO & EVP, Head of ResearchSale282318.62$89,851
3 Mar 2026 ↗Garg PushkalEVP Chief R&DSale317319.06$101,142

Short interest

Shares sold short, 15 Oct 2026. US exchange data.

6.6m

-14.8% on the period before. 5.1 days to cover.

Short volume

Share of the day's trading sold short, 4 Nov 2026

25.2%

Last 60 trading days.

Failed deliveries

Shares not delivered on settlement, from the SEC

  • 24 Sept 20261,112 shares
  • 23 Sept 20261,116 shares
  • 22 Sept 20261,379 shares
  • 21 Sept 2026100 shares
  • 15 Sept 2026159 shares

Sources and methodology

Data on this tab
Our data supplier
Chart on the Overview
TradingView

Nothing here is investment advice. Prices can be delayed or wrong, so check with the exchange before relying on them. Data for this page. How we cover markets.