BIIB drawdown: 57.5% below the all-time high
Biogen Inc. (BIIB) is 57.5% below its all-time high, set Mar 20, 2015 (as of market close, Jul 24, 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 (1991).
- Below all-time high
- −57.5%
- 42.5% of ATH
- All-time high
- $476.0
- Mar 20, 2015
- Time below the high
- 11.3 yrs
- since Mar 20, 2015
- Worst-ever drawdown
- −90.0%
- Dec 16, 1994
- Longest underwater
- 11.3 yrs
- between all-time highs
- Today's level first reached
- Apr 12, 2013
- 13.3 yrs ago
- Last time this deep
- Aug 6, 2003
- in a previous episode
% of all-time high since 1991#
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 BIIB, 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 16, 1991 | Dec 16, 1994 | −90.0% | 3.2 yrs | Dec 26, 1995 | 4.2 yrs |
| Mar 20, 2015 | Apr 10, 2025 | −76.2% | 10.1 yrs | not yet | 11.3 yrs+ |
| Mar 6, 2000 | Apr 24, 2000 | −66.5% | 49 days | Sep 27, 2000 | 7 mo |
| Dec 18, 2000 | Mar 11, 2003 | −62.6% | 2.2 yrs | Oct 15, 2007 | 6.8 yrs |
| Oct 7, 1997 | Sep 1, 1998 | −62.0% | 11 mo | Dec 18, 1998 | 14 mo |
| Oct 15, 2007 | Dec 1, 2008 | −52.7% | 14 mo | Apr 15, 2011 | 3.5 yrs |
| May 20, 1996 | Jul 24, 1996 | −51.5% | 2 mo | Mar 11, 1997 | 10 mo |
| Mar 11, 1997 | Apr 17, 1997 | −46.1% | 37 days | Aug 29, 1997 | 6 mo |
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 1991: how far BIIB 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: BIIB 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 BIIB from its all-time high?
- BIIB is currently 57.5% below its all-time high, set Mar 20, 2015 (as of market close, Jul 24, 2026). Prices only, the convention headlines use; with dividends reinvested the gap is usually smaller.
- What was the biggest BIIB drawdown ever?
- The deepest decline on record in our data (since 1991) took the stock 90.0% below its prior high, bottoming Dec 16, 1994. The table on this page lists every major episode with its peak, trough and recovery date.
Methodology & related#
Daily closing prices since 1991 (split-adjusted). "All-time" means since our price data begins — BIIB 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.