Protagonist Therapeutics, Inc. (PTGX) Stock Price History
Historical prices from 2016 to 2026
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PTGX Historical Performance
Short-Term Returns
PTGX Stock Price Trajectory (2016–2026)
As of May 8, 2026, Protagonist Therapeutics, Inc. (PTGX) trades at $98.85, representing a +129.4% return over the past year. The stock has delivered a +238.8% total return over five years (+27.6% CAGR), reflecting significant long-term value creation.
The stock reached its all-time high of $107.84 on April 1, 2026. From this peak, PTGX has corrected -8.3%, currently trading 23% above its 200-day moving average, indicating continued institutional support.
When compared to Healthcare sector peers IMVT (+96.1% 1Y), KYMR (+190.7% 1Y), and PRTA (+44.4% 1Y), PTGX has underperformed the peer group average. Compare PTGX vs IMVT →
PTGX Historical Price Data (2025–2026)
Showing 30 of 2,449 recordsLoading full history…
| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-05-07 | 103.55 | 104.68 | 98.53 | 98.85 | 745K | -4.92% |
| 2026-05-06 | 99.96 | 105.03 | 99.96 | 103.97 | 570K | +4.72% |
| 2026-05-05 | 100.27 | 101.21 | 97.45 | 99.28 | 377K | -0.35% |
| 2026-05-04 | 98.00 | 101.08 | 98.00 | 99.63 | 174K | +1.28% |
| 2026-05-01 | 99.16 | 99.47 | 97.17 | 98.37 | 308K | -0.61% |
| 2026-04-30 | 99.75 | 99.75 | 97.20 | 98.97 | 565K | +0.46% |
| 2026-04-29 | 100.27 | 100.35 | 98.11 | 98.52 | 568K | -2.66% |
| 2026-04-28 | 99.50 | 102.47 | 97.79 | 101.21 | 583K | +2.74% |
| 2026-04-27 | 100.65 | 102.16 | 98.31 | 98.51 | 954K | -1.49% |
| 2026-04-24 | 103.17 | 104.27 | 99.00 | 100.00 | 666K | -2.55% |
| 2026-04-23 | 106.34 | 106.34 | 102.36 | 102.62 | 560K | -2.78% |
| 2026-04-22 | 106.43 | 107.00 | 103.93 | 105.55 | 340K | -0.32% |
| 2026-04-21 | 104.94 | 106.45 | 103.69 | 105.89 | 373K | +0.40% |
| 2026-04-20 | 105.13 | 106.46 | 104.00 | 105.47 | 523K | -0.48% |
| 2026-04-17 | 105.57 | 106.91 | 103.51 | 105.98 | 988K | +2.17% |
| 2026-04-16 | 103.59 | 104.53 | 102.45 | 103.73 | 394K | -1.62% |
| 2026-04-15 | 105.96 | 106.66 | 103.02 | 105.44 | 718K | +0.69% |
| 2026-04-14 | 98.35 | 104.78 | 97.58 | 104.72 | 692K | +7.33% |
| 2026-04-13 | 98.61 | 101.04 | 95.40 | 97.57 | 1.07M | -1.26% |
| 2026-04-10 | 104.28 | 104.28 | 98.41 | 98.82 | 566K | -5.06% |
| 2026-04-09 | 102.09 | 105.11 | 101.45 | 104.08 | 680K | +1.95% |
| 2026-04-08 | 103.52 | 105.88 | 101.66 | 102.09 | 759K | -1.60% |
| 2026-04-07 | 103.43 | 103.94 | 101.30 | 103.75 | 681K | +0.84% |
| 2026-04-06 | 103.72 | 104.46 | 101.83 | 102.89 | 470K | -0.86% |
| 2026-04-02 | 102.36 | 104.31 | 101.59 | 103.78 | 560K | +0.11% |
| 2026-04-01 | 105.51 | 107.84 | 102.70 | 103.67 | 576K | -1.64% |
| 2026-03-31 | 101.23 | 105.98 | 101.06 | 105.40 | 782K | +5.54% |
| 2026-03-30 | 99.04 | 102.54 | 98.08 | 99.87 | 872K | +0.91% |
| 2026-03-27 | 100.90 | 101.92 | 97.89 | 98.97 | 782K | -3.13% |
| 2026-03-26 | 103.31 | 105.69 | 102.01 | 102.17 | 1.03M | -2.05% |
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Start ComparisonPTGX — Frequently Asked Questions
Quick answers to the most common questions about buying PTGX stock.
How has PTGX stock performed recently?
PTGX returned +129.4% over the past year, beating its 5-year annualized CAGR of +27.6%. The stock trades above its 200-day moving average, confirming the uptrend.
What is PTGX's all-time high price?
Protagonist Therapeutics, Inc. reached $107.84 on 2026-04-01. The 52-week high is $107.84. Current 1-year return of +129.4% 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.