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ALNY
Alnylam Pharmaceuticals Inc.Stock · Health Care · Nasdaq-100 0.2%
$227.00+$3.05 (+1.36%)as of market close, Aug 13, 2026
☾ After hours:$227.12+0.00%3:59 PM ET
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If you invested $1,000 in ALNY — what it would be worth today

If you invested in ALNY

A $1,000 investment in Alnylam Pharmaceuticals Inc. (ALNY) in January 2016 would be worth $3,293 as of August 2026 with dividends reinvested12.0% a year. Use the dropdowns above to try any amount, ticker, or starting month back to June 2004.

Over the same period, the same $1,000 would be worth $4,747 in the S&P 500 (SPY) and $7,578 in the Nasdaq-100 (QQQ). ALNY trailed both the S&P 500 and the Nasdaq-100 over that period.

Worth today
$3,293
Multiple
3.3×
Annualized
12.0%/yr
Max drawdown
-54.9%
10/31/2025 – 7/31/2026
Same $ in SPY
$4,747

Growth of $1,000 in ALNY since January 2016#

monthly
$2,000$4,000$6,000
201620182020202220242026
SPY$4,747ALNY$3,293

Alnylam Pharmaceuticals Inc. (ALNY). Total return approximated via dividend- and split-adjusted closes (no taxes or fees). Not investment advice.

Growth of $1,000 in ALNY by starting month#

$2K$4K$6K
201620182020202220242026

$1,000 invested in ALNY, by starting year#

Invested inWorth todaySame in QQQMultipleAnnualized
2016$3,293$7,5783.3×12.0%
2017$5,676$6,2655.7×20.0%
2018$1,746$4,5651.7×6.8%
2019$2,718$4,5612.7×14.2%
2020$1,978$3,4722.0×11.0%
2021$1,509$2,4011.5×7.7%
2022$1,650$2,0701.6×11.7%
2023$1,003$2,5331.0×0.1%
2024$1,313$1,7771.3×11.3%
2025$837$1,4110.8×-11.0%

Methodology#

Investments are assumed made at the first trading day's close of the chosen year. "Dividends reinvested" uses split- and dividend-adjusted closes (a standard total-return approximation; taxes and fees excluded). "Price-only" uses split-adjusted closes. ALNY data begins June 2004; values as of August 2026 and refresh daily. Past performance does not predict future returns; not investment advice.

See the live ALNY chart and fundamentals on the ALNY quote page or compare with the same investment in SPY.

FAQ

How much would $1,000 invested in ALNY be worth today?
A $1,000 investment in Alnylam Pharmaceuticals Inc. (ALNY) in January 2016 would be worth about $3,293 as of August 2026, with dividends reinvested. That works out to about 12.0% a year.
How far back does the ALNY calculation go?
ALNY data begins June 2004. You can pick any starting month from then to the present and see what your investment would be worth today.
Does this include dividends?
Yes. The default "dividends reinvested" view uses split- and dividend-adjusted closing prices — a standard total-return approximation that excludes taxes and fees. A price-only view (split-adjusted, no dividends) is also available.