Nasdaq
PTGX
Protagonist Therapeutics, Inc.
- Health Care
- Listed 2016
- 1 day
- +6.5%
- 1 month
- +3.8%
- 1 year
- +171%
$146.18 · Mkt cap $9.40B
At the 6 Aug 2026 close
Nasdaq
Protagonist Therapeutics, Inc.
$146.18 · Mkt cap $9.40B
At the 6 Aug 2026 close
Protagonist Therapeutics, Inc. trades under the ticker PTGX on Nasdaq, in the Health Care sector (Biotechnology: Pharmaceutical Preparations). It has been listed since 2016. Its market capitalisation is $9.40B. The last closing price was $146.18, on 6 Aug 2026. No price-to-earnings ratio is shown, because it did not report positive earnings in its last annual filing. Over the past year the share price is +171%, and +3.8% over the past month. Returns are price returns and exclude dividends.
This page exists because PTGX is one of the shares What A Share can show you. It is not a recommendation, and its appearance here says nothing about whether the company is worth owning.