Protagonist Therapeutics Inc. drawdown: 18.8% below the all-time high (price)
Protagonist Therapeutics Inc. is 18.8% below its all-time high, set Aug 17, 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
- −18.8%
- 81.2% of ATH
- All-time high
- $158.62
- Aug 17, 2026
- Time below the high
- 2 mo
- since Aug 17, 2026
- Worst-ever drawdown
- −85.8%
- Jun 13, 2022
- Longest underwater
- 4.2 yrs
- between all-time highs
- Today's level first reached
- Jul 2, 2026
- 3 mo ago
- Last time this deep
- May 30, 2025
- in a previous episode
% of all-time high since 2016: 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 |
|---|---|---|---|---|---|
| Sep 1, 2021 | Jun 13, 2022 | −85.8% | 9 mo | Mar 10, 2025 | 3.5 yrs |
| Dec 5, 2016 | Dec 3, 2019 | −82.1% | 3.0 yrs | Feb 16, 2021 | 4.2 yrs |
| Mar 11, 2025 | Apr 10, 2025 | −31.6% | 30 days | Aug 27, 2025 | 6 mo |
| Oct 17, 2016 | Nov 1, 2016 | −20.3% | 15 days | Nov 10, 2016 | 24 days |
| Mar 19, 2021 | Mar 29, 2021 | −19.0% | 10 days | May 18, 2021 | 2 mo |
| Aug 17, 2026 | Oct 16, 2026 | −18.8% | 2 mo | not yet | 2 mo+ |
| Dec 12, 2025 | Jan 29, 2026 | −16.4% | 48 days | Mar 9, 2026 | 3 mo |
| Oct 10, 2025 | Oct 22, 2025 | −15.5% | 12 days | Nov 24, 2025 | 45 days |
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 2016: how far Protagonist Therapeutics 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 Protagonist Therapeutics Inc. from its all-time high?
- Protagonist Therapeutics Inc. is currently 18.8% below its all-time high, set Aug 17, 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 Protagonist Therapeutics Inc. drawdown ever?
- The deepest decline on record in our data (since 2016) took Protagonist Therapeutics Inc. 85.8% below its prior high, bottoming Jun 13, 2022. The table on this page lists every major episode with its peak, trough and recovery date.
Methodology & related#
Daily data since -1 from PTGX; no free deep history exists for Protagonist Therapeutics 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.