Alnylam Pharmaceuticals - 21 Year Stock Price History | ALNY

The latest closing stock price for Alnylam Pharmaceuticals as of June 27, 2025 is 322.83.

  • An investor who bought $1,000 worth of Alnylam Pharmaceuticals stock at the IPO in 2004 would have $52,715 today, roughly 53 times their original investment - a 20.89% compound annual growth rate over 21 years.
  • The all-time high Alnylam Pharmaceuticals stock closing price was 325.00 on June 24, 2025.
  • The Alnylam Pharmaceuticals 52-week high stock price is 326.03, which is 1% above the current share price.
  • The Alnylam Pharmaceuticals 52-week low stock price is 205.87, which is 36.2% below the current share price.
  • The average Alnylam Pharmaceuticals stock price for the last 52 weeks is 264.03.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.

Alnylam Pharmaceuticals - 21 Year Stock Price History | ALNY

  • An investor who bought $1,000 worth of Alnylam Pharmaceuticals stock at the IPO in 2004 would have $52,715 today, roughly 53 times their original investment - a 20.89% compound annual growth rate over 21 years.
  • The all-time high Alnylam Pharmaceuticals stock closing price was 325.00 on June 24, 2025.
  • The Alnylam Pharmaceuticals 52-week high stock price is 326.03, which is 1% above the current share price.
  • The Alnylam Pharmaceuticals 52-week low stock price is 205.87, which is 36.2% below the current share price.
  • The average Alnylam Pharmaceuticals stock price for the last 52 weeks is 264.03.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.