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55.75
7.74%
-4.779
Protagonist Therapeutics Inc Stock (PTGX) Price History
The historical daily chart and data for Protagonist Therapeutics Inc stock (PTGX), show that the latest closing stock price as of September 08, 2025, is $55.75.
- Protagonist Therapeutics Inc all-time high stock price is $61.89, occurred on August 28, 2025.
- The lowest Protagonist Therapeutics Inc stock price recorded was $4.47 on December 03, 2019. Since then, Protagonist Therapeutics Inc's stock price has risen over 1,147% to $55.75 now.
- The 52-week high stock price for PTGX is $61.89, representing a 11.01% increase from the current share price, occurred on August 28, 2025.
- The 52-week low stock price for PTGX is $33.31, indicating a -40.25% decrease from the current share price, occurred on November 19, 2024.
- The closing price of Protagonist Therapeutics Inc (PTGX) stock in the beginning of 2024 was $35.32. The stock closed the year at $10.91, a loss of over -69.11% for the year.
The table below shows more information about PTGX historical price data:
Daily
Weekly
Monthly
7D
30D
60D
YTD
1Y
| Date | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Sep 08, 2025 | $59.50 | $54.91 | $4.59 | 442,103.0 | -7.95% |
| Sep 05, 2025 | $61.04 | $58.03 | $3.01 | 1,926,562.0 | +1.56% |
| Sep 04, 2025 | $60.71 | $57.45 | $3.26 | 1,473,768.0 | +2.56% |
| Sep 03, 2025 | $59.51 | $57.49 | $2.02 | 993,796.0 | -1.26% |
| Sep 02, 2025 | $59.75 | $58.27 | $1.48 | 665,187.0 | -0.34% |
| Aug 29, 2025 | $59.27 | $57.66 | $1.62 | 788,913.0 | +1.57% |
| Aug 28, 2025 | $61.89 | $58.07 | $3.82 | 982,417.0 | -5.36% |
| Aug 27, 2025 | $61.50 | $56.71 | $4.79 | 1,413,981.0 | +7.79% |
| Aug 26, 2025 | $57.50 | $56.58 | $0.9231 | 516,370.0 | +0.19% |
| Aug 25, 2025 | $58.79 | $56.56 | $2.23 | 532,801.0 | -1.04% |
| Aug 22, 2025 | $57.72 | $56.09 | $1.62 | 470,084.0 | +2.57% |
| Aug 21, 2025 | $56.47 | $55.26 | $1.21 | 500,857.0 | -0.34% |
| Aug 20, 2025 | $57.10 | $55.27 | $1.84 | 675,235.0 | -0.04% |
| Aug 19, 2025 | $56.56 | $55.26 | $1.30 | 528,390.0 | +0.07% |
| Aug 18, 2025 | $57.99 | $55.51 | $2.48 | 470,840.0 | +0.25% |
| Aug 15, 2025 | $56.33 | $54.18 | $2.15 | 471,864.0 | +1.96% |
| Aug 14, 2025 | $56.58 | $54.96 | $1.62 | 615,071.0 | -3.05% |
| Aug 13, 2025 | $56.85 | $54.57 | $2.28 | 999,381.0 | +4.02% |
| Aug 12, 2025 | $54.74 | $53.49 | $1.25 | 541,716.0 | +1.45% |
| Aug 11, 2025 | $53.80 | $50.58 | $3.22 | 866,486.0 | +5.25% |
Protagonist Therapeutics Inc Stock (PTGX) Year by Year Price History
In this detailed analysis, we present a comprehensive overview of the price movements of Protagonist Therapeutics Inc stock over the years. By exploring the year-by-year data, investors can gain valuable insights into the historical performance and volatility of PTGX shares. From significant milestones and fluctuations to notable trends, this in-depth examination of Protagonist Therapeutics Inc stock price history provides a foundation for understanding how the company's stock has evolved over time.
Protagonist Therapeutics Inc Stock (PTGX) Price History 2025
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Sep, 2025 | $61.04 | $54.91 | $6.12 | 5,501,416.0 | -5.64% |
| Aug, 2025 | $61.89 | $50.48 | $11.41 | 13,877,749.0 | +9.64% |
| Jul, 2025 | $57.73 | $49.38 | $8.35 | 15,157,006.0 | -2.55% |
| Jun, 2025 | $57.70 | $47.53 | $10.17 | 20,591,534.0 | +16.43% |
| May, 2025 | $47.74 | $41.28 | $6.46 | 16,499,952.0 | +3.60% |
| Apr, 2025 | $48.93 | $39.60 | $9.33 | 26,177,677.0 | -5.25% |
| Mar, 2025 | $60.60 | $37.20 | $23.40 | 31,788,843.0 | +28.65% |
| Feb, 2025 | $39.90 | $33.70 | $6.20 | 12,169,705.0 | -0.56% |
| Jan, 2025 | $40.16 | $35.03 | $5.13 | 10,342,778.0 | -2.07% |
Protagonist Therapeutics Inc Stock (PTGX) Price History 2024
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Dec, 2024 | $43.83 | $38.04 | $5.79 | 12,374,412.0 | -12.08% |
| Nov, 2024 | $48.86 | $33.31 | $15.55 | 16,791,880.0 | -4.45% |
| Oct, 2024 | $48.89 | $42.78 | $6.11 | 10,491,436.0 | +1.87% |
| Sep, 2024 | $48.00 | $40.67 | $7.33 | 14,443,953.0 | +4.92% |
| Aug, 2024 | $43.76 | $32.50 | $11.26 | 13,350,479.0 | +14.56% |
| Jul, 2024 | $42.67 | $33.21 | $9.46 | 27,469,672.0 | +8.05% |
| Jun, 2024 | $35.96 | $28.36 | $7.60 | 17,898,965.0 | +23.09% |
| May, 2024 | $32.64 | $24.78 | $7.86 | 10,374,141.0 | +12.11% |
| Apr, 2024 | $29.21 | $24.22 | $4.99 | 11,096,780.0 | -13.20% |
| Mar, 2024 | $33.34 | $27.59 | $5.76 | 11,517,719.0 | -4.77% |
| Feb, 2024 | $31.40 | $25.07 | $6.33 | 15,825,790.0 | +21.47% |
| Jan, 2024 | $28.10 | $21.43 | $6.67 | 16,412,528.0 | +9.07% |
Protagonist Therapeutics Inc Stock (PTGX) Price History 2023
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Dec, 2023 | $23.88 | $17.70 | $6.18 | 16,641,102.0 | +25.92% |
| Nov, 2023 | $18.68 | $14.43 | $4.25 | 12,263,879.0 | +25.24% |
| Oct, 2023 | $16.84 | $13.72 | $3.12 | 13,374,549.0 | -12.83% |
| Sep, 2023 | $20.23 | $16.33 | $3.90 | 13,903,065.0 | -15.84% |
| Aug, 2023 | $20.58 | $17.82 | $2.76 | 12,836,044.0 | +2.16% |
| Jul, 2023 | $26.81 | $16.65 | $10.16 | 27,219,690.0 | -29.76% |
| Jun, 2023 | $30.10 | $25.71 | $4.39 | 24,645,412.0 | +5.95% |
| May, 2023 | $27.10 | $22.60 | $4.50 | 20,384,295.0 | +15.35% |
| Apr, 2023 | $24.48 | $17.64 | $6.84 | 23,376,236.0 | -1.74% |
| Mar, 2023 | $25.69 | $15.01 | $10.68 | 58,892,400.0 | +41.80% |
| Feb, 2023 | $17.97 | $13.18 | $4.79 | 24,063,337.0 | +22.05% |
| Jan, 2023 | $13.89 | $10.62 | $3.27 | 19,294,918.0 | +21.81% |
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