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81.93
1.87%
-1.56
Pre-market:
82.49
0.56
+0.68%
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 February 12, 2026, is $81.93.
- Protagonist Therapeutics Inc all-time high stock price is $96.54, occurred on December 15, 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 1,733% to $81.93 now.
- The 52-week high stock price for PTGX is $96.54, representing a 17.83% increase from the current share price, occurred on December 15, 2025.
- The 52-week low stock price for PTGX is $33.70, indicating a -58.87% decrease from the current share price, occurred on February 25, 2025.
- The closing price of Protagonist Therapeutics Inc (PTGX) stock in the beginning of 2025 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 |
|---|---|---|---|---|---|
| Feb 12, 2026 | $84.72 | $81.56 | $3.16 | 352,498.0 | -1.87% |
| Feb 11, 2026 | $84.82 | $80.99 | $3.83 | 349,464.0 | -0.46% |
| Feb 10, 2026 | $84.90 | $82.64 | $2.26 | 442,582.0 | +0.67% |
| Feb 09, 2026 | $83.90 | $82.21 | $1.69 | 322,018.0 | -1.38% |
| Feb 06, 2026 | $85.05 | $81.55 | $3.50 | 812,792.0 | +4.74% |
| Feb 05, 2026 | $85.43 | $80.20 | $5.23 | 457,066.0 | -3.16% |
| Feb 04, 2026 | $85.60 | $81.00 | $4.60 | 1,076,705.0 | -2.68% |
| Feb 03, 2026 | $86.09 | $82.88 | $3.22 | 769,378.0 | +3.06% |
| Feb 02, 2026 | $84.55 | $81.14 | $3.41 | 1,273,893.0 | +1.53% |
| Jan 30, 2026 | $82.56 | $78.75 | $3.81 | 1,174,009.0 | +2.60% |
| Jan 29, 2026 | $82.49 | $77.69 | $4.80 | 952,738.0 | -2.48% |
| Jan 28, 2026 | $83.69 | $80.00 | $3.69 | 772,671.0 | -1.59% |
| Jan 27, 2026 | $83.87 | $82.00 | $1.87 | 507,521.0 | +0.95% |
| Jan 26, 2026 | $84.31 | $81.94 | $2.37 | 473,444.0 | -0.96% |
| Jan 23, 2026 | $85.50 | $82.67 | $2.83 | 569,065.0 | -1.99% |
| Jan 22, 2026 | $85.20 | $80.65 | $4.55 | 609,076.0 | +1.07% |
| Jan 21, 2026 | $83.96 | $80.27 | $3.69 | 1,086,068.0 | +0.56% |
| Jan 20, 2026 | $83.63 | $79.87 | $3.76 | 901,282.0 | +1.74% |
| Jan 16, 2026 | $84.67 | $81.47 | $3.20 | 660,417.0 | -3.26% |
| Jan 15, 2026 | $87.44 | $84.33 | $3.11 | 839,216.0 | -0.56% |
| Jan 14, 2026 | $85.30 | $80.47 | $4.83 | 1,052,640.0 | +4.76% |
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 2026
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Feb, 2026 | $86.09 | $80.20 | $5.89 | 6,208,894.0 | +0.16% |
| Jan, 2026 | $88.16 | $77.69 | $10.46 | 17,330,398.0 | -6.34% |
Protagonist Therapeutics Inc Stock (PTGX) Price History 2025
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Dec, 2025 | $96.54 | $83.52 | $13.02 | 19,322,234.0 | -3.04% |
| Nov, 2025 | $90.85 | $75.44 | $15.41 | 16,880,659.0 | +14.47% |
| Oct, 2025 | $93.25 | $62.24 | $31.01 | 33,325,838.0 | +18.35% |
| Sep, 2025 | $68.26 | $54.50 | $13.76 | 24,433,470.0 | +12.50% |
| 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% |
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