Protagonist Therapeutics, Inc. (PTGX) Stock Chart
PTGX price chart
Daily prices adjusted for splits and dividends. 1D and 5D show delayed intraday prices. Markers: E earnings, D dividend, S split.
Technical snapshot
Key levels & statistics
PTGX performance vs the market
Total return, dividends reinvestedPTGX monthly returns
PTGX historical prices
PTGX dividends & splits
About the PTGX chart
Protagonist Therapeutics (PTGX) closed at $128.75 on October 16, 2026, up 47.4% so far this year. The stock is trading 13.2% above its 200-day moving average of $113.77, which technical analysts usually read as a long-term uptrend. Over the past year PTGX returned +70.0% including dividends, ahead of the S&P 500 (+16.8%).
This page charts the full trading history of Protagonist Therapeutics, Inc. stock. Daily prices come from EODHD and are adjusted for stock splits and dividends, so returns over long periods are comparable. For the latest quote, company profile, earnings and news, see the PTGX stock overview.
PTGX chart FAQ
What is Protagonist Therapeutics's all-time high stock price?
The highest closing price for PTGX was $158.62 on August 17, 2026 (adjusted for stock splits). As of the October 16, 2026 close it traded 18.8% below that level.
What is the 52-week range of PTGX stock?
Over the 52 weeks to October 16, 2026, PTGX traded between an intraday low of $73.08 on October 23, 2025 and an intraday high of $160.81 on August 19, 2026.
Is PTGX above its 200-day moving average?
Yes. On October 16, 2026 PTGX closed at $128.75, 13.2% above its 200-day simple moving average of $113.77. The 50-day average was $145.39.
How has PTGX stock performed compared with the S&P 500?
Including reinvested dividends, PTGX returned +70.0% over the past year, compared with +16.8% for the S&P 500 (SPY). Over five years the figures were +315.7% and +83.0%.
Does Protagonist Therapeutics pay a dividend?
Protagonist Therapeutics has not paid a dividend in the past 12 months.
How do I read the PTGX chart?
Pick a time range above the chart and choose candlesticks, a line or an area chart. Moving averages, Bollinger Bands, volume, RSI and MACD can be switched on with the indicator buttons, and "Compare" plots PTGX against the S&P 500, its sector or a competitor as a percentage change. Chart prices are adjusted for splits and dividends.