What if you'd held ALNY?
A $1,000 investment in Alnylam Pharmaceuticals, Inc. (ALNY) at the month-end close of 2004-06 would be worth $32,091 at the close of 2026-08 — +3109.1% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $6,756.
Your scenario
Result
If you'd bought $1,000 at the start of each year
Value of $1,000 invested on January 1 of each year, held to 2026-08, dividends included.
Every year, $1,000 from 2004
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2004 | $1,000 | — |
| 2005 | $1,783 | +78.3% |
| 2006 | $2,865 | +60.7% |
| 2007 | $3,893 | +35.9% |
| 2008 | $3,311 | -15.0% |
| 2009 | $2,359 | -28.8% |
| 2010 | $1,320 | -44.0% |
| 2011 | $1,091 | -17.3% |
| 2012 | $2,443 | +123.9% |
| 2013 | $8,608 | +252.3% |
| 2014 | $12,985 | +50.9% |
| 2015 | $12,602 | -2.9% |
| 2016 | $5,012 | -60.2% |
| 2017 | $17,008 | +239.3% |
| 2018 | $9,760 | -42.6% |
| 2019 | $15,418 | +58.0% |
| 2020 | $17,399 | +12.9% |
| 2021 | $22,701 | +30.5% |
| 2022 | $31,814 | +40.1% |
| 2023 | $25,624 | -19.5% |
| 2024 | $31,501 | +22.9% |
| 2025 | $53,233 | +69.0% |
| 2026 | $32,478 | -39.0% |
Best and worst month-end to buy
The best single month-end close to have bought ALNY was 2004-07 ($5.15): $1,000 then is $47,109 today. The worst was 2025-10 ($456): $1,000 then is $532.
FAQ
What would $1,000 in ALNY be worth today?
A $1,000 investment in Alnylam Pharmaceuticals, Inc. (ALNY) at the start of 2004 would be worth about $32,091 today, a total return of +3109.1%. Dividends are reinvested in these figures.
What were the best and worst years for ALNY?
Alnylam Pharmaceuticals, Inc. (ALNY)'s strongest calendar year since 2004 was 2013, a +252.3% return — $1,000 held through that year became about $3,523 by year-end. Its weakest year was 2016, at -60.2%.
Does the calculator include dividends and splits?
Yes where available. Prices are adjusted for both stock splits and reinvested dividends (total return), the same measure brokerages use.
How much would $100 per month in ALNY have grown?
Investing $100 at the end of every month since 2004-06 would have grown to about $235,063 on $26,700 invested.
Did ALNY beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $6,756. ALNY beat the S&P 500 by +375.0% in total return.
Is this investment advice?
No. Wall Street Regrets is an entertainment and education tool. Every number is a historical calculation, not a prediction, and past performance never guarantees future results.
Methodology
Alnylam Pharmaceuticals, Inc. (ALNY) historical total-return data from 2004-06 to 2026-08, reduced to month-end closes for the tables above.
Returns use adjusted close prices from Yahoo Finance historical data — adjusted for stock splits and reinvested dividends — the same convention used by major brokerages. A "year" scenario invests $1,000 at the prior December's month-end close and values it at the latest available month-end close. Non-USD amounts are converted at historical month-end exchange rates (Yahoo Finance): to USD on the buy date and back to your currency at the latest rate, so the return reflects the currency move as well as the asset.
Month-end resolution means intra-month extremes are not captured in tables; the calculator uses exact trading-day closes where daily data is available. Figures ignore taxes, fees, and the currency effects of non-USD listings. History is not a forecast. Wall Street Regrets is entertainment, not investment advice.
What if you'd held…
Data: adjusted close prices via Yahoo Finance. As of 2026-08. Not financial advice.