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Protagonist Therapeutics (PTGX) Stock Chart & Stock Price History

Protagonist Therapeutics logo
$136.64 0.00 (0.00%)
Closing price 07/31/2026 04:00 PM Eastern
Extended Trading
$136.73 +0.09 (+0.07%)
As of 07/31/2026 07:34 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

Protagonist Therapeutics Stock Price Performance

The Protagonist Therapeutics (PTGX) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 153.84%, with a year-to-date return of 56.45%. In the past month, the stock has increased 3.81%, reflecting recent market activity.

As of the latest close, Protagonist Therapeutics traded at $136.64 with a market cap of $8.79 billion and volume of 548,760 shares. Five years ago, the stock traded at $49.26, representing a 177.39% increase over that period. At the time, it had a market cap of $2.16 billion and a volume of 389,364 shares.

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5 Day
Performance
+2.74%
1 Month
Performance
+3.81%
Year-To-Date
Performance
+56.45%
1 Year
Performance
+153.84%
5 Year
Performance
+177.39%

PTGX Stock Chart for Monday, August, 3, 2026

Protagonist Therapeutics Stock Price History

DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization
07/31/2026$138.64$136.64
-1.44%
$138.37$131.69548,760 shs$8.79 billion
07/30/2026$133.00$138.64
+4.24%
$138.95$130.63556,349 shs$8.92 billion
07/29/2026$136.84$133.00
-2.81%
$137.43$132.72560,653 shs$8.55 billion
07/28/2026$135.56$136.84
+0.94%
$137.00$133.20282,383 shs$8.80 billion
07/27/2026$136.11$135.56
-0.40%
$139.92$135.43416,660 shs$8.72 billion
07/24/2026$135.43$136.11
+0.50%
$137.20$133.78298,402 shs$8.75 billion
07/23/2026$135.44$135.43
-0.01%
$137.33$132.00605,784 shs$8.71 billion
07/22/2026$138.31$135.44
-2.08%
$139.45$134.42710,437 shs$8.71 billion
07/21/2026$134.27$138.31
+3.01%
$139.72$131.05580,518 shs$8.89 billion
07/20/2026$140.91$134.27
-4.71%
$143.29$133.64762,616 shs$8.63 billion
07/17/2026$132.02$140.91
+6.73%
$141.08$131.37519,073 shs$9.06 billion
07/16/2026$135.46$132.02
-2.54%
$136.55$131.35602,061 shs$8.49 billion
07/15/2026$131.27$135.46
+3.19%
$139.22$126.97836,083 shs$8.71 billion
07/14/2026$129.89$131.27
+1.06%
$131.95$128.68564,975 shs$8.44 billion
07/13/2026$131.42$129.89
-1.16%
$131.36$125.32541,006 shs$8.35 billion
07/10/2026$137.64$131.42
-4.52%
$137.12$130.641.06 million shs$8.45 billion
07/09/2026$140.07$137.64
-1.73%
$141.10$136.991.17 million shs$8.85 billion
07/08/2026$140.85$140.07
-0.55%
$140.95$136.08914,984 shs$9.01 billion
07/07/2026$131.50$140.85
+7.11%
$141.08$130.691.37 million shs$9.06 billion
07/06/2026$131.62$131.50
-0.09%
$132.79$128.15639,783 shs$8.46 billion
07/03/2026$131.62$131.62$131.87$125.24708,388 shs$8.46 billion
07/02/2026$125.17$131.62
+5.15%
$131.87$125.24708,388 shs$8.46 billion

This page (NASDAQ:PTGX) was last updated on 8/3/2026 by MarketBeat.com Staff.
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