Alnylam Pharmaceuticals (ALNY) Historical Monthly & Quarterly Returns
Dividend-adjusted returns by month and quarter. Compare performance across years.
Alnylam Pharmaceuticals
ALNY
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -15.0% | -1.5% | -4.2% | — | — | — | — | — | — | — | — | — |
| 2025 | +15.3% | -9.1% | +9.4% | -2.5% | +15.7% | +7.1% | +20.3% | +13.8% | +2.1% | +0.0% | -1.1% | -11.9% |
| 2024 | -9.7% | -12.6% | -1.1% | -3.7% | +3.1% | +63.7% | -2.3% | +10.6% | +4.7% | -3.1% | -5.1% | -7.0% |
| 2023 | -4.7% | -15.4% | +4.6% | -0.6% | -7.1% | +2.7% | +2.9% | +1.2% | -10.5% | -14.3% | +10.8% | +13.8% |
| 2022 | -18.9% | +14.7% | +3.4% | -18.3% | -5.7% | +15.9% | -2.6% | +45.5% | -3.1% | +3.5% | +6.4% | +7.7% |
| 2021 | +15.8% | -1.6% | -4.7% | -0.4% | +1.0% | +19.4% | +5.6% | +12.6% | -6.3% | -15.5% | +15.2% | -7.7% |
| 2020 | -0.3% | +2.5% | -7.5% | +21.0% | +2.7% | +9.5% | -1.6% | -9.0% | +9.8% | -15.5% | +5.6% | +0.0% |
| 2019 | +14.6% | +1.8% | +9.9% | -4.4% | -24.4% | +7.5% | +6.9% | +4.0% | -0.3% | +7.9% | +35.0% | -1.7% |
| 2018 | +2.3% | -7.6% | -0.9% | -20.6% | +5.2% | -1.0% | -3.5% | +29.1% | -28.7% | -8.1% | +0.9% | -10.2% |
| 2017 | +6.8% | +29.1% | -0.8% | +4.6% | +22.1% | +21.8% | +3.7% | +3.6% | +37.0% | +3.7% | +10.4% | -5.6% |
| 2016 | -26.8% | -15.0% | +7.2% | +6.8% | +7.0% | -22.6% | +22.7% | +2.6% | -3.0% | -47.5% | +23.2% | -14.7% |
| 2015 | -3.3% | +8.2% | +2.8% | -2.4% | +28.7% | -8.6% | +6.3% | -19.2% | -21.9% | +7.0% | +21.1% | -9.5% |
| 2014 | +30.1% | -2.9% | -17.4% | -26.2% | +19.7% | +6.5% | -14.3% | +28.7% | +12.1% | +18.7% | +8.4% | -3.5% |
| 2013 | +32.2% | -1.8% | +2.9% | -1.7% | +27.9% | +1.2% | +48.9% | +12.2% | +23.6% | -10.0% | +6.2% | +5.1% |
| 2012 | +41.8% | +15.4% | -17.0% | +2.9% | -10.1% | +13.8% | +60.4% | -2.1% | +2.7% | -13.9% | +4.9% | +7.5% |
| 2011 | +4.8% | +6.3% | -12.9% | +7.3% | +2.0% | -10.5% | +0.1% | -25.6% | -5.9% | +23.6% | -12.6% | +14.8% |
| 2010 | -4.1% | +3.1% | -2.3% | -0.4% | -6.8% | -4.9% | +2.2% | -10.9% | -10.2% | +7.1% | -30.4% | +7.8% |
| 2009 | -14.7% | -12.6% | +3.3% | -3.7% | +11.0% | +9.4% | +4.5% | -4.2% | +1.7% | -24.9% | -1.3% | +4.8% |
| 2008 | +3.3% | -5.5% | -14.1% | +2.8% | +15.2% | -7.4% | +30.1% | -14.7% | -2.4% | -20.6% | -20.7% | +35.7% |
| 2007 | -0.7% | -11.5% | -4.3% | +4.3% | -12.6% | -7.6% | +59.0% | -3.1% | +40.2% | -3.6% | +3.3% | -10.9% |
| 2006 | +0.6% | +19.6% | +9.4% | -12.6% | -3.8% | +2.0% | -15.3% | +2.0% | +10.7% | +36.8% | +8.9% | -0.3% |
| 2005 | -6.3% | +2.1% | +2.5% | +6.1% | -4.1% | -2.1% | +33.6% | -2.6% | +18.9% | -15.0% | +30.7% | +6.4% |
| 2004 | — | — | — | — | — | +8.0% | -31.9% | +6.8% | +4.7% | -8.9% | +52.4% | -6.6% |
| Avg | +2.9% | +0.3% | -1.4% | -2.0% | +4.1% | +5.6% | +10.7% | +3.7% | +3.5% | -4.2% | +7.8% | +0.6% |
| Median | +0.1% | -1.6% | -0.8% | -0.6% | +2.7% | +4.6% | +4.1% | +2.3% | +1.9% | -5.9% | +6.3% | -1.0% |
| Win % | 50% | 45% | 45% | 38% | 62% | 64% | 68% | 59% | 55% | 41% | 73% | 45% |
2026
Jan-15.0%
Feb-1.5%
Mar-4.2%
Apr—
May—
Jun—
Jul—
Aug—
Sep—
Oct—
Nov—
Dec—
2025
Jan+15.3%
Feb-9.1%
Mar+9.4%
Apr-2.5%
May+15.7%
Jun+7.1%
Jul+20.3%
Aug+13.8%
Sep+2.1%
Oct+0.0%
Nov-1.1%
Dec-11.9%
2024
Jan-9.7%
Feb-12.6%
Mar-1.1%
Apr-3.7%
May+3.1%
Jun+63.7%
Jul-2.3%
Aug+10.6%
Sep+4.7%
Oct-3.1%
Nov-5.1%
Dec-7.0%
2023
Jan-4.7%
Feb-15.4%
Mar+4.6%
Apr-0.6%
May-7.1%
Jun+2.7%
Jul+2.9%
Aug+1.2%
Sep-10.5%
Oct-14.3%
Nov+10.8%
Dec+13.8%
2022
Jan-18.9%
Feb+14.7%
Mar+3.4%
Apr-18.3%
May-5.7%
Jun+15.9%
Jul-2.6%
Aug+45.5%
Sep-3.1%
Oct+3.5%
Nov+6.4%
Dec+7.7%
2021
Jan+15.8%
Feb-1.6%
Mar-4.7%
Apr-0.4%
May+1.0%
Jun+19.4%
Jul+5.6%
Aug+12.6%
Sep-6.3%
Oct-15.5%
Nov+15.2%
Dec-7.7%
2020
Jan-0.3%
Feb+2.5%
Mar-7.5%
Apr+21.0%
May+2.7%
Jun+9.5%
Jul-1.6%
Aug-9.0%
Sep+9.8%
Oct-15.5%
Nov+5.6%
Dec+0.0%
2019
Jan+14.6%
Feb+1.8%
Mar+9.9%
Apr-4.4%
May-24.4%
Jun+7.5%
Jul+6.9%
Aug+4.0%
Sep-0.3%
Oct+7.9%
Nov+35.0%
Dec-1.7%
2018
Jan+2.3%
Feb-7.6%
Mar-0.9%
Apr-20.6%
May+5.2%
Jun-1.0%
Jul-3.5%
Aug+29.1%
Sep-28.7%
Oct-8.1%
Nov+0.9%
Dec-10.2%
2017
Jan+6.8%
Feb+29.1%
Mar-0.8%
Apr+4.6%
May+22.1%
Jun+21.8%
Jul+3.7%
Aug+3.6%
Sep+37.0%
Oct+3.7%
Nov+10.4%
Dec-5.6%
2016
Jan-26.8%
Feb-15.0%
Mar+7.2%
Apr+6.8%
May+7.0%
Jun-22.6%
Jul+22.7%
Aug+2.6%
Sep-3.0%
Oct-47.5%
Nov+23.2%
Dec-14.7%
2015
Jan-3.3%
Feb+8.2%
Mar+2.8%
Apr-2.4%
May+28.7%
Jun-8.6%
Jul+6.3%
Aug-19.2%
Sep-21.9%
Oct+7.0%
Nov+21.1%
Dec-9.5%
2014
Jan+30.1%
Feb-2.9%
Mar-17.4%
Apr-26.2%
May+19.7%
Jun+6.5%
Jul-14.3%
Aug+28.7%
Sep+12.1%
Oct+18.7%
Nov+8.4%
Dec-3.5%
2013
Jan+32.2%
Feb-1.8%
Mar+2.9%
Apr-1.7%
May+27.9%
Jun+1.2%
Jul+48.9%
Aug+12.2%
Sep+23.6%
Oct-10.0%
Nov+6.2%
Dec+5.1%
2012
Jan+41.8%
Feb+15.4%
Mar-17.0%
Apr+2.9%
May-10.1%
Jun+13.8%
Jul+60.4%
Aug-2.1%
Sep+2.7%
Oct-13.9%
Nov+4.9%
Dec+7.5%
2011
Jan+4.8%
Feb+6.3%
Mar-12.9%
Apr+7.3%
May+2.0%
Jun-10.5%
Jul+0.1%
Aug-25.6%
Sep-5.9%
Oct+23.6%
Nov-12.6%
Dec+14.8%
2010
Jan-4.1%
Feb+3.1%
Mar-2.3%
Apr-0.4%
May-6.8%
Jun-4.9%
Jul+2.2%
Aug-10.9%
Sep-10.2%
Oct+7.1%
Nov-30.4%
Dec+7.8%
2009
Jan-14.7%
Feb-12.6%
Mar+3.3%
Apr-3.7%
May+11.0%
Jun+9.4%
Jul+4.5%
Aug-4.2%
Sep+1.7%
Oct-24.9%
Nov-1.3%
Dec+4.8%
2008
Jan+3.3%
Feb-5.5%
Mar-14.1%
Apr+2.8%
May+15.2%
Jun-7.4%
Jul+30.1%
Aug-14.7%
Sep-2.4%
Oct-20.6%
Nov-20.7%
Dec+35.7%
2007
Jan-0.7%
Feb-11.5%
Mar-4.3%
Apr+4.3%
May-12.6%
Jun-7.6%
Jul+59.0%
Aug-3.1%
Sep+40.2%
Oct-3.6%
Nov+3.3%
Dec-10.9%
2006
Jan+0.6%
Feb+19.6%
Mar+9.4%
Apr-12.6%
May-3.8%
Jun+2.0%
Jul-15.3%
Aug+2.0%
Sep+10.7%
Oct+36.8%
Nov+8.9%
Dec-0.3%
2005
Jan-6.3%
Feb+2.1%
Mar+2.5%
Apr+6.1%
May-4.1%
Jun-2.1%
Jul+33.6%
Aug-2.6%
Sep+18.9%
Oct-15.0%
Nov+30.7%
Dec+6.4%
2004
Jan—
Feb—
Mar—
Apr—
May—
Jun+8.0%
Jul-31.9%
Aug+6.8%
Sep+4.7%
Oct-8.9%
Nov+52.4%
Dec-6.6%
Avg
Jan+2.9%
Feb+0.3%
Mar-1.4%
Apr-2.0%
May+4.1%
Jun+5.6%
Jul+10.7%
Aug+3.7%
Sep+3.5%
Oct-4.2%
Nov+7.8%
Dec+0.6%
Median
Jan+0.1%
Feb-1.6%
Mar-0.8%
Apr-0.6%
May+2.7%
Jun+4.6%
Jul+4.1%
Aug+2.3%
Sep+1.9%
Oct-5.9%
Nov+6.3%
Dec-1.0%
Win %
Jan50%
Feb45%
Mar45%
Apr38%
May62%
Jun64%
Jul68%
Aug59%
Sep55%
Oct41%
Nov73%
Dec45%
Frequently asked questions
What is the best performing month for Alnylam Pharmaceuticals (ALNY) stock?
- Historically, July is the best performing month for Alnylam Pharmaceuticals (ALNY) stock with an average return of +10.71%.
What is the worst performing month for Alnylam Pharmaceuticals (ALNY) stock?
- Historically, October is the worst performing month for Alnylam Pharmaceuticals (ALNY) stock with an average return of -4.20%.
What is the best performing quarter for Alnylam Pharmaceuticals (ALNY) stock?
- Historically, Q3 is the best performing quarter for Alnylam Pharmaceuticals (ALNY) stock with an average return of +19.34%.
What is the worst performing quarter for Alnylam Pharmaceuticals (ALNY) stock?
- Historically, Q1 is the worst performing quarter for Alnylam Pharmaceuticals (ALNY) stock with an average return of +1.46%.
What is the best performing year for Alnylam Pharmaceuticals (ALNY) stock?
- Historically, 2013 is the best performing year for Alnylam Pharmaceuticals (ALNY) stock with a return of +252.33%.
What is the worst performing year for Alnylam Pharmaceuticals (ALNY) stock?
- Historically, 2016 is the worst performing year for Alnylam Pharmaceuticals (ALNY) stock with a return of -60.23%.
Which month has the highest win rate for Alnylam Pharmaceuticals (ALNY) stock?
- Historically, November has the highest win rate for Alnylam Pharmaceuticals (ALNY) stock — positive in 73% of years.
Which month has the lowest win rate for Alnylam Pharmaceuticals (ALNY) stock?
- Historically, April has the lowest win rate for Alnylam Pharmaceuticals (ALNY) stock — positive in 38% of years.
Which quarter has the highest win rate for Alnylam Pharmaceuticals (ALNY) stock?
- Historically, Q3 has the highest win rate for Alnylam Pharmaceuticals (ALNY) stock — positive in 64% of years.
Which quarter has the lowest win rate for Alnylam Pharmaceuticals (ALNY) stock?
- Historically, Q1 has the lowest win rate for Alnylam Pharmaceuticals (ALNY) stock — positive in 41% of years.
About this data
- How are returns calculated?
- We compare the closing price at the end of each period (month or quarter) with the closing price at the end of the previous period. The return is the percentage change. All prices are adjusted for dividends and stock splits. Data from FMP historical prices.
- What is average vs median?
- Average is the arithmetic mean of returns for each period across years. Median is the middle value. Both exclude empty cells. Use median to reduce impact of outliers.
- What does the heatmap show?
- Green cells indicate positive returns, red cells indicate negative returns. The darker the color, the stronger the move. Average and Median rows summarize each column across years.
- What is Win %?
- Percentage of years when the period had a positive return. For example, 80% for January means January was positive in 80% of the years in the selected range.