Alnylam Pharmaceuticals, Inc. (ALNY) Stock Price History
Historical prices from 2004 to 2026
- 1M
- -17.8%
- 3M
- -29.8%
- YTD
- -45.1%
- 1Y
- -52.3%
- 3Y
- +7.1%
- 5Y
- +2.4%
Loading 10-year price history...
ALNY Historical Performance
ALNY Annual Returns
Year-by-year price performance · 2004–2026
- 2004 annual price return
- +24.3%
- 2005 annual price return
- +76.3%
- 2006 annual price return
- +65.1%
- 2007 annual price return
- +34.8%
- 2008 annual price return
- -14.5%
- 2009 annual price return
- -29.9%
- 2010 annual price return
- -45.6%
- 2011 annual price return
- -18.6%
- 2012 annual price return
- +110.7%
- 2013 annual price return
- +235.4%
- 2014 annual price return
- +51.9%
- 2015 annual price return
- -3.7%
- 2016 annual price return
- -59.8%
- 2017 annual price return
- +228.8%
- 2018 annual price return
- -44.7%
- 2019 annual price return
- +58.3%
- 2020 annual price return
- +12.4%
- 2021 annual price return
- +32.4%
- 2022 annual price return
- +36.7%
- 2023 annual price return
- -18.1%
- 2024 annual price return
- +20.7%
- 2025 annual price return
- +70.2%
- 2026 annual price return
- -48.6%
ALNY Stock Price Trajectory (2004–2026)
As of October 3, 2026, Alnylam Pharmaceuticals, Inc. (ALNY) trades at $219.72, representing a -52.3% return over the past year. The stock has delivered a +12.7% total return over five years (+2.4% CAGR), reflecting significant long-term value creation.
The stock reached its all-time high of $495.55 on October 20, 2025. From this peak, ALNY has corrected -55.7%, currently trading 27% below its 200-day moving average, suggesting potential weakness.
When compared to Healthcare sector peers IONS (-36.3% 1Y), ARWR (+85.5% 1Y), and NTLA (-40.0% 1Y), ALNY has underperformed the peer group average. Compare ALNY vs IONS →
ALNY Historical Price Data · from 2004
Rows 1–50 of 5,622| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-10-02 | 231.31 | 231.36 | 219.45 | 219.72 | 1.66M | -4.96% |
| 2026-10-01 | 248.21 | 251.71 | 230.19 | 231.18 | 2.01M | -6.31% |
| 2026-09-30 | 253.68 | 254.44 | 246.66 | 246.74 | 1.03M | -2.89% |
| 2026-09-29 | 254.86 | 257.27 | 251.02 | 254.07 | 754K | -0.51% |
| 2026-09-28 | 256.10 | 256.34 | 248.12 | 255.36 | 1.11M | -0.23% |
| 2026-09-25 | 249.05 | 256.66 | 247.51 | 255.96 | 1.08M | +2.55% |
| 2026-09-24 | 246.90 | 251.75 | 245.52 | 249.59 | 920K | +1.25% |
| 2026-09-23 | 251.59 | 253.81 | 245.34 | 246.51 | 1.27M | -2.04% |
| 2026-09-22 | 247.00 | 255.37 | 244.24 | 251.65 | 1.13M | +3.00% |
| 2026-09-21 | 243.94 | 247.06 | 241.94 | 244.32 | 1.13M | +1.99% |
| 2026-09-18 | 246.49 | 246.49 | 238.51 | 239.56 | 2.73M | -2.42% |
| 2026-09-17 | 243.81 | 245.61 | 239.68 | 245.51 | 954K | +2.57% |
| 2026-09-16 | 239.50 | 242.24 | 236.27 | 239.36 | 814K | +0.46% |
| 2026-09-15 | 246.99 | 247.43 | 237.52 | 238.27 | 1.87M | -4.69% |
| 2026-09-14 | 250.16 | 252.79 | 244.18 | 249.99 | 912K | +0.53% |
| 2026-09-11 | 248.05 | 254.08 | 246.01 | 248.67 | 1.16M | +0.47% |
| 2026-09-10 | 256.68 | 256.68 | 246.42 | 247.51 | 1.54M | -4.07% |
| 2026-09-09 | 256.48 | 261.98 | 253.28 | 258.00 | 1.40M | -0.81% |
| 2026-09-08 | 259.73 | 272.00 | 254.68 | 260.10 | 2.00M | -2.26% |
| 2026-09-04 | 258.02 | 266.85 | 258.02 | 266.11 | 1.42M | +0.61% |
| 2026-09-03 | 267.40 | 271.12 | 261.54 | 264.50 | 1.64M | -1.08% |
| 2026-09-02 | 246.48 | 269.94 | 246.48 | 267.40 | 3.27M | +8.65% |
| 2026-09-01 | 242.40 | 248.19 | 238.02 | 246.11 | 1.90M | +2.25% |
| 2026-08-31 | 233.88 | 243.02 | 233.33 | 240.69 | 1.63M | +1.51% |
| 2026-08-28 | 224.47 | 238.95 | 223.61 | 237.10 | 1.84M | +0.23% |
| 2026-08-27 | 236.56 | 238.00 | 230.46 | 236.56 | 1.28M | -1.02% |
| 2026-08-26 | 240.57 | 242.89 | 236.60 | 239.00 | 1.11M | -0.45% |
| 2026-08-25 | 236.56 | 240.67 | 235.41 | 240.08 | 1.58M | +1.72% |
| 2026-08-24 | 235.83 | 237.91 | 228.59 | 236.01 | 2.14M | -0.09% |
| 2026-08-21 | 228.88 | 238.97 | 228.34 | 236.22 | 1.91M | +3.02% |
| 2026-08-20 | 239.00 | 240.88 | 228.74 | 229.30 | 1.70M | -5.49% |
| 2026-08-19 | 234.36 | 244.03 | 233.40 | 242.61 | 1.88M | +6.12% |
| 2026-08-18 | 226.27 | 230.91 | 222.01 | 228.61 | 1.60M | +1.79% |
| 2026-08-17 | 225.76 | 227.99 | 222.12 | 224.60 | 1.54M | -1.77% |
| 2026-08-14 | 223.52 | 228.98 | 220.23 | 228.65 | 1.53M | +0.67% |
| 2026-08-13 | 225.95 | 227.54 | 222.70 | 227.12 | 1.45M | +1.42% |
| 2026-08-12 | 219.00 | 224.66 | 219.00 | 223.95 | 1.62M | +1.24% |
| 2026-08-11 | 217.41 | 223.44 | 216.50 | 221.20 | 1.44M | +1.94% |
| 2026-08-10 | 218.00 | 223.50 | 215.61 | 216.98 | 1.40M | -1.01% |
| 2026-08-07 | 217.31 | 219.64 | 210.49 | 219.20 | 1.74M | +1.43% |
| 2026-08-06 | 228.58 | 234.00 | 212.98 | 216.12 | 2.27M | -5.51% |
| 2026-08-05 | 221.74 | 229.65 | 221.50 | 228.72 | 2.73M | +4.44% |
| 2026-08-04 | 220.33 | 222.59 | 215.07 | 219.00 | 3.11M | -0.60% |
| 2026-08-03 | 208.04 | 220.49 | 208.04 | 220.33 | 3.40M | +7.21% |
| 2026-07-31 | 205.46 | 207.99 | 200.11 | 205.52 | 4.48M | +0.02% |
| 2026-07-30 | 225.02 | 230.00 | 197.81 | 205.48 | 9.84M | -28.31% |
| 2026-07-29 | 288.09 | 290.60 | 284.15 | 286.62 | 1.30M | -0.62% |
| 2026-07-28 | 282.79 | 290.47 | 281.23 | 288.41 | 1.44M | +3.60% |
| 2026-07-27 | 272.66 | 284.68 | 272.66 | 278.40 | 1.41M | +2.44% |
| 2026-07-24 | 268.74 | 275.58 | 265.64 | 271.77 | 1.15M | +1.13% |
ALNY Chart Terminal
Live VCP patterns, Cup & Handle overlays, support/resistance, and AI trade plans.
Live Breakouts Feed
High-probability breakout stocks crossing their pivot across 5 pattern engines.
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
10-year return with dividends reinvested.
Peer Comparison
Compare growth, multiples, and margins vs sector.
ALNY — Frequently Asked Questions
Quick answers to the most common questions about buying ALNY stock.
How has ALNY stock performed recently?
ALNY declined -52.3% over the past year, below its 5-year annualized CAGR of +2.4%. The stock trades below its 200-day moving average, reflecting the downtrend.
What is ALNY's all-time high price?
Alnylam Pharmaceuticals, Inc. reached $495.55 on 2025-10-20. The 52-week high is $495.55. Current 1-year return of -52.3% places the stock further from historical peaks.
Where can I download ALNY historical price data?
This page provides ALNY daily OHLCV data with 50-day MA, 200-day MA, and RSI indicators. Data spans 2004-2026, downloadable in CSV format.