Ionis Pharmaceuticals Inc. drawdown: 50.4% below the all-time high (price)
Ionis Pharmaceuticals Inc. is 50.4% below its all-time high, set Feb 6, 2026 (as of market close, Oct 16, 2026), measured on price alone — dividends are not included, the convention headlines and crash histories use. 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.
- Below all-time high
- −50.4%
- 49.6% of ATH
- All-time high
- $86.5
- Feb 6, 2026
- Time below the high
- 8 mo
- since Feb 6, 2026
- Worst-ever drawdown
- −91.7%
- Mar 18, 2003
- Longest underwater
- 13.5 yrs
- between all-time highs
- Today's level first reached
- Jan 9, 2014
- 12.8 yrs ago
- Last time this deep
- Aug 29, 2025
- in a previous episode
% of all-time high since 1991: price#
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. Basis and range are in the URL, so a particular view is a link.
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 |
|---|---|---|---|---|---|
| Mar 6, 2000 | Mar 18, 2003 | −91.7% | 3.0 yrs | Sep 19, 2013 | 13.5 yrs |
| Nov 4, 1991 | Nov 4, 1994 | −84.1% | 3.0 yrs | Jun 10, 1996 | 4.6 yrs |
| Jun 10, 1996 | Dec 22, 1999 | −78.7% | 3.5 yrs | Mar 3, 2000 | 3.7 yrs |
| Mar 19, 2015 | Jun 27, 2016 | −73.2% | 15 mo | Mar 14, 2019 | 4.0 yrs |
| Apr 8, 2019 | Apr 8, 2025 | −70.4% | 6.0 yrs | Feb 6, 2026 | 6.8 yrs |
| Feb 21, 2014 | May 8, 2014 | −61.1% | 2 mo | Dec 10, 2014 | 10 mo |
| Feb 6, 2026 | Oct 13, 2026 | −51.0% | 8 mo | not yet | 8 mo+ |
| Sep 23, 2013 | Nov 18, 2013 | −20.9% | 56 days | Nov 27, 2013 | 2 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 Ionis Pharmaceuticals Inc. 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: a single asset's history is one surviving sample, 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 Ionis Pharmaceuticals Inc. from its all-time high?
- Ionis Pharmaceuticals Inc. is currently 50.4% below its all-time high, set Feb 6, 2026 (as of market close, Oct 16, 2026). Prices only, the convention headlines use; with dividends reinvested the gap is usually smaller.
- What was the biggest Ionis Pharmaceuticals Inc. drawdown ever?
- The deepest decline on record in our data (since 1991) took Ionis Pharmaceuticals Inc. 91.7% below its prior high, bottoming Mar 18, 2003. The table on this page lists every major episode with its peak, trough and recovery date.
Methodology & related#
Daily data since -1 from IONS; no free deep history exists for Ionis Pharmaceuticals Inc. — for a 150-year 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. Past performance does not predict future returns; not investment advice.