Protagonist Therapeutics, Inc. (PTGX) Stock Price History
Historical prices from 2016 to 2026
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Historical Performance
Short-Term Returns
PTGX Stock Price Trajectory (2016–2026)
As of March 2, 2026, Protagonist Therapeutics, Inc. (PTGX) trades at $92.08, representing a +145.0% return over the past year. The stock has delivered a +28.0% return over five years, reflecting significant long-term value creation.
The stock reached its all-time high of $96.54 on December 16, 2025. From this peak, PTGX has corrected -4.6%, currently trading 33% above its 200-day moving average, indicating continued institutional support.
When compared to Healthcare sector peers ARGX (+22.8% 1Y), CANF (+169.9% 1Y), and AKTX (-72.9% 1Y), PTGX has underperformed the peer group average. Compare PTGX vs ARGX →
Historical Price Data
Showing 30 of 2,401 records| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-02-27 | 88.18 | 92.23 | 87.15 | 92.08 | 92 | +4.17% |
| 2026-02-26 | 87.03 | 88.83 | 85.60 | 88.39 | 88 | +1.48% |
| 2026-02-25 | 87.50 | 88.46 | 86.25 | 87.10 | 87 | -0.33% |
| 2026-02-24 | 86.72 | 89.53 | 86.00 | 87.39 | 87 | +0.92% |
| 2026-02-23 | 82.32 | 86.84 | 82.30 | 86.59 | 86 | +4.63% |
| 2026-02-20 | 83.26 | 83.69 | 80.72 | 82.76 | 82 | -0.40% |
| 2026-02-19 | 81.88 | 83.22 | 80.94 | 83.09 | 344K | +0.12% |
| 2026-02-18 | 81.59 | 83.39 | 81.59 | 82.99 | 288K | +0.97% |
| 2026-02-17 | 81.99 | 82.58 | 81.01 | 82.19 | 15K | +0.86% |
| 2026-02-13 | 81.99 | 84.06 | 80.59 | 81.49 | 428K | -0.54% |
| 2026-02-12 | 84.07 | 84.72 | 81.56 | 81.93 | 353K | -1.87% |
| 2026-02-11 | 83.46 | 84.82 | 80.99 | 83.49 | 350K | -0.46% |
| 2026-02-10 | 83.00 | 84.90 | 82.64 | 83.88 | 443K | +0.67% |
| 2026-02-09 | 83.47 | 83.90 | 82.21 | 83.32 | 322K | -1.38% |
| 2026-02-06 | 82.11 | 85.05 | 81.55 | 84.49 | 813K | +4.74% |
| 2026-02-05 | 83.62 | 85.43 | 80.20 | 80.67 | 457K | -3.16% |
| 2026-02-04 | 85.59 | 85.60 | 81.00 | 83.30 | 1.08M | -2.68% |
| 2026-02-03 | 83.09 | 86.09 | 82.88 | 85.59 | 769K | +3.06% |
| 2026-02-02 | 81.80 | 84.55 | 81.14 | 83.05 | 1.41M | +1.53% |
| 2026-01-30 | 79.77 | 82.56 | 78.75 | 81.80 | 1.17M | +2.60% |
| 2026-01-29 | 81.39 | 82.49 | 77.69 | 79.73 | 953K | -2.48% |
| 2026-01-28 | 82.45 | 83.69 | 80.00 | 81.76 | 777K | -1.59% |
| 2026-01-27 | 82.00 | 83.87 | 82.00 | 83.08 | 508K | +0.95% |
| 2026-01-26 | 82.53 | 84.31 | 81.94 | 82.30 | 529K | -0.96% |
| 2026-01-24 | 84.62 | 85.37 | 82.67 | 83.10 | 561K | 0.00% |
| 2026-01-23 | 84.62 | 85.50 | 82.67 | 83.10 | 569K | -1.99% |
| 2026-01-22 | 82.83 | 85.20 | 80.65 | 84.79 | 609K | +1.07% |
| 2026-01-21 | 82.51 | 83.96 | 80.27 | 83.89 | 1.09M | +0.56% |
| 2026-01-20 | 81.16 | 83.63 | 79.87 | 83.42 | 901K | +1.74% |
| 2026-01-16 | 84.51 | 84.67 | 81.47 | 81.99 | 665K | -3.26% |
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Start ComparisonFrequently Asked Questions
How has PTGX stock performed recently?
PTGX returned +145.0% over the past year, beating its 5-year annualized CAGR of +28.0%. The stock trades above its 200-day moving average, confirming the uptrend.
What is PTGX's all-time high price?
Protagonist Therapeutics, Inc. reached $96.54 on 2025-12-16. The 52-week high is $96.54. Current 1-year return of +145.0% places the stock closer to historical peaks.
Where can I download PTGX historical price data?
This page provides PTGX daily OHLCV data with 50-day MA, 200-day MA, and RSI indicators. Data spans 2016-2026, downloadable in CSV format.