Historical Stock Price
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Video: Compound Annual Growth Rate (CAGR) Definition
Date Open High Low Close Volume
07/02/2026 $303.87 $317.17 $303.00 $312.78 1.09M
07/06/2026 $319.34 $319.34 $307.13 $313.04 891.80K
07/07/2026 $317.07 $321.98 $315.35 $321.59 980.40K
07/08/2026 $318.50 $325.37 $316.78 $323.50 897.70K
07/09/2026 $378.49 $380.00 $311.10 $312.79 5.86M
Alnylam Pharmaceuticals, Inc. is a biopharmaceutical company focused on RNA interference (RNAi) therapeutics. Its marketed products include AMVUTTRA for hereditary transthyretin-mediated amyloidosis with polyneuropathy, ONPATTRO for polyneuropathy of hATTR amyloidosis, GIVLAARI for acute hepatic porphyria, OXLUMO for primary hyperoxaluria type 1, and Leqvio, developed with Novartis, for hypercholesterolemia or mixed dyslipidemia. The company also develops treatments for complement-mediated diseases, alpha-1 liver disease, and other conditions, including Cemdisiran, Belcesiran, Elebsiran, Zilebesiran, ALN-APP, ALN-HSD, and Fitusiran.
ALNY historical stock prices picture
Alnylam Pharmaceuticals (ALNY) has the following price history information. Looking back at ALNY historical stock prices for the last five trading days, on July 02, 2026, ALNY opened at $303.87, traded as high as $317.17 and as low as $303.00, and closed at $312.78. Trading volume was a total of 1.09M shares. On July 06, 2026, ALNY opened at $319.34, traded as high as $319.34 and as low as $307.13, and closed at $313.04. Trading volume was a total of 891.80K shares. On July 07, 2026, ALNY opened at $317.07, traded as high as $321.98 and as low as $315.35, and closed at $321.59. Trading volume was a total of 980.40K shares. On July 08, 2026, ALNY opened at $318.50, traded as high as $325.37 and as low as $316.78, and closed at $323.50. Trading volume was a total of 897.70K shares. On July 09, 2026, ALNY opened at $378.49, traded as high as $380.00 and as low as $311.10, and closed at $312.79. Trading volume was a total of 5.86M shares.

ALNY Historical Stock Prices By Date:

ALNY historical cagr picture

Below, we examine the compound annual growth rate — CAGR for short — of an investment into Alnylam Pharmaceuticals shares, starting with a $10,000 purchase of ALNY, and working forward through the historical stock price information to today.

Growth of $10,000.00
Without Dividends Reinvested

Start date: 07/12/2016
End date: 07/09/2026
Start price/share: $64.00
End price/share: $312.79
Dividends collected/share: $0.00
Total return: 388.73%
Average Annual Total Return: 17.20%
Starting investment: $10,000.00
Ending investment: $48,875.06
Years: 10.00
Date Close
07/02/2026$312.78
07/06/2026$313.04
07/07/2026$321.59
07/08/2026$323.50
07/09/2026$312.79
ALNY is categorized under the Healthcare sector; below are some other companies in the same sector:

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Also explore: ALNY shares outstanding history

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