ALNY drawdown: 53.8% below the all-time high
Alnylam Pharmaceuticals Inc. (ALNY) is 53.8% below its all-time high, set Oct 20, 2025 (as of market close, Aug 13, 2026). The chart shows every day as a percentage of the highest level reached up to that point: 100% means a fresh record, everything below is a drawdown. "All-time" means since our price data begins (2004).
- Below all-time high
- −53.8%
- 46.2% of ATH
- All-time high
- $491.2
- Oct 20, 2025
- Time below the high
- 10 mo
- since Oct 20, 2025
- Worst-ever drawdown
- −83.6%
- Oct 3, 2011
- Longest underwater
- 5.7 yrs
- between all-time highs
- Today's level first reached
- Aug 8, 2022
- 4.0 yrs ago
- Last time this deep
- Jun 3, 2019
- in a previous episode
% of all-time high since 2004#
The classic underwater chart (drawdown curve), drawn as % of the all-time high — 100% is a fresh record, everything below it is time spent underwater.
% of all-time high on the price basis — the all-time high considers the full history of ALNY, including years before the visible window. Dividends are excluded on this basis (the convention headlines use).
The deepest drawdowns on record#
Every decline of 15% or more from an all-time high (price basis), deepest first.
| Peak | Trough | Depth | Peak → trough | Recovered by | Underwater |
|---|---|---|---|---|---|
| Oct 9, 2007 | Oct 3, 2011 | −83.6% | 4.0 yrs | Jul 3, 2013 | 5.7 yrs |
| Jun 22, 2015 | Nov 3, 2016 | −77.4% | 16 mo | Nov 10, 2017 | 2.4 yrs |
| Oct 20, 2025 | Jul 30, 2026 | −58.2% | 9 mo | not yet | 10 mo+ |
| Mar 20, 2018 | Dec 24, 2018 | −57.8% | 9 mo | Jun 19, 2020 | 2.3 yrs |
| Jun 9, 2004 | Aug 16, 2004 | −52.2% | 2 mo | Jan 6, 2005 | 7 mo |
| Jan 13, 2014 | Apr 28, 2014 | −47.6% | 3 mo | Oct 24, 2014 | 9 mo |
| Oct 14, 2021 | May 11, 2022 | −42.5% | 7 mo | Aug 3, 2022 | 10 mo |
| Dec 21, 2022 | Apr 26, 2024 | −40.6% | 16 mo | Jun 26, 2024 | 1.5 yrs |
Price basis (no dividends) — the convention crash histories use. With dividends reinvested, recoveries arrive years earlier; switch the basis on the chart above to see it.
Drawdown vs what came next#
One dot per month since 2004: how far ALNY stood below its all-time high, and the total return over the following 1, 5 and 10 years.
Read this with survivorship bias in mind: ALNY is on this chart precisely because it survived — the many stocks that fell this far and never recovered (or were delisted) aren't on anyone's chart, so past recoveries here say little about the odds ahead. Monthly windows also overlap heavily (they are not independent samples). Not investment advice.
FAQ#
- How far is ALNY from its all-time high?
- ALNY is currently 53.8% below its all-time high, set Oct 20, 2025 (as of market close, Aug 13, 2026). Prices only, the convention headlines use; with dividends reinvested the gap is usually smaller.
- What was the biggest ALNY drawdown ever?
- The deepest decline on record in our data (since 2004) took the stock 83.6% below its prior high, bottoming Oct 3, 2011. The table on this page lists every major episode with its peak, trough and recovery date.
Methodology & related#
Daily closing prices since 2004 (split-adjusted). "All-time" means since our price data begins — ALNY may have traded earlier. For a 150-year index drawdown record see the S&P 500 drawdown page. The price basis excludes dividends; the total-return basis reinvests them; the real basis additionally deflates by CPI. See also returns by year, 150 years of returns and the rolling-returns explorer. Past performance does not predict future returns; not investment advice.