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2.98
4.49%
-0.14
After Hours:
3.13
0.15
+5.03%
Protagenic Therapeutics Inc Stock (PTIX) Price History
The historical daily chart and data for Protagenic Therapeutics Inc stock (PTIX), show that the latest closing stock price as of October 22, 2025, is $2.98.
- Protagenic Therapeutics Inc all-time high stock price is $26.18, occurred on May 22, 2024.
- The lowest Protagenic Therapeutics Inc stock price recorded was $0.00 on November 24, 2023. Since then, Protagenic Therapeutics Inc's stock price has risen over to $2.98 now.
- The 52-week high stock price for PTIX is $15.26, representing a 412.08% increase from the current share price, occurred on November 12, 2024.
- The 52-week low stock price for PTIX is $2.25, indicating a -24.50% decrease from the current share price, occurred on August 20, 2025.
- The closing price of Protagenic Therapeutics Inc (PTIX) stock in the beginning of 2024 was $5.60. The stock closed the year at $1.60, a loss of over -71.43% for the year.
The table below shows more information about PTIX historical price data:
Daily
Weekly
Monthly
7D
30D
60D
YTD
1Y
| Date | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Oct 22, 2025 | $3.11 | $2.91 | $0.20 | 62,652.0 | -4.49% |
| Oct 21, 2025 | $3.27 | $3.10 | $0.165 | 29,675.0 | -2.80% |
| Oct 20, 2025 | $3.27 | $3.10 | $0.17 | 45,100.0 | -0.31% |
| Oct 17, 2025 | $3.22 | $2.97 | $0.25 | 76,701.0 | +5.57% |
| Oct 16, 2025 | $3.32 | $3.04 | $0.28 | 49,297.0 | -4.69% |
| Oct 15, 2025 | $3.32 | $3.03 | $0.29 | 58,499.0 | +5.61% |
| Oct 14, 2025 | $3.20 | $2.92 | $0.28 | 133,560.0 | -6.48% |
| Oct 13, 2025 | $3.45 | $3.24 | $0.2103 | 58,427.0 | -3.28% |
| Oct 10, 2025 | $3.59 | $3.31 | $0.28 | 157,767.0 | -3.18% |
| Oct 09, 2025 | $3.77 | $3.42 | $0.35 | 114,557.0 | +1.17% |
| Oct 08, 2025 | $3.48 | $3.33 | $0.15 | 49,759.0 | +1.79% |
| Oct 07, 2025 | $3.39 | $3.30 | $0.09 | 22,455.0 | -1.18% |
| Oct 06, 2025 | $3.53 | $3.29 | $0.2389 | 62,984.0 | +3.34% |
| Oct 03, 2025 | $3.50 | $3.22 | $0.28 | 141,925.0 | -0.30% |
| Oct 02, 2025 | $3.40 | $3.25 | $0.15 | 74,077.0 | -2.37% |
| Oct 01, 2025 | $3.41 | $3.31 | $0.10 | 77,683.0 | -1.46% |
| Sep 30, 2025 | $4.07 | $3.28 | $0.79 | 341,267.0 | -17.15% |
| Sep 29, 2025 | $4.42 | $4.00 | $0.415 | 108,856.0 | -3.50% |
| Sep 26, 2025 | $4.36 | $4.21 | $0.1492 | 40,935.0 | +1.18% |
| Sep 25, 2025 | $4.43 | $4.03 | $0.40 | 130,991.0 | +3.16% |
| Sep 24, 2025 | $4.39 | $4.09 | $0.30 | 117,536.0 | -5.52% |
| Sep 23, 2025 | $4.55 | $4.28 | $0.27 | 139,092.0 | -0.46% |
Protagenic Therapeutics Inc Stock (PTIX) Year by Year Price History
In this detailed analysis, we present a comprehensive overview of the price movements of Protagenic 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 PTIX shares. From significant milestones and fluctuations to notable trends, this in-depth examination of Protagenic Therapeutics Inc stock price history provides a foundation for understanding how the company's stock has evolved over time.
Protagenic Therapeutics Inc Stock (PTIX) Price History 2025
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Oct, 2025 | $3.77 | $2.91 | $0.86 | 1,277,770.0 | -13.12% |
| Sep, 2025 | $4.55 | $2.75 | $1.80 | 2,377,908.0 | -4.72% |
| Aug, 2025 | $6.20 | $2.25 | $3.95 | 166,123,349.0 | +22.45% |
| Jul, 2025 | $4.04 | $2.90 | $1.14 | 3,192,022.0 | -19.45% |
| Jun, 2025 | $4.19 | $3.30 | $0.89 | 3,643,345.0 | -5.19% |
| May, 2025 | $14.28 | $2.35 | $11.93 | 111,013,140.3 | +22.77% |
| Apr, 2025 | $8.65 | $2.51 | $6.15 | 14,522,063.4 | +14.81% |
| Mar, 2025 | $5.88 | $2.73 | $3.15 | 1,225,196.4 | -36.03% |
| Feb, 2025 | $5.46 | $3.36 | $2.10 | 619,657.1 | -17.34% |
| Jan, 2025 | $8.67 | $5.08 | $3.60 | 461,978.0 | -24.69% |
Protagenic Therapeutics Inc Stock (PTIX) Price History 2024
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Dec, 2024 | $11.20 | $6.16 | $5.04 | 511,639.4 | -8.97% |
| Nov, 2024 | $15.26 | $7.29 | $7.97 | 496,152.1 | -9.94% |
| Oct, 2024 | $11.48 | $6.86 | $4.62 | 112,060.7 | +4.42% |
| Sep, 2024 | $15.54 | $7.56 | $7.98 | 993,780.3 | +3.49% |
| Aug, 2024 | $11.87 | $7.00 | $4.87 | 11,072.6 | -14.62% |
| Jul, 2024 | $13.09 | $9.80 | $3.29 | 9,859.4 | -21.55% |
| Jun, 2024 | $19.32 | $12.04 | $7.28 | 14,967.6 | -31.44% |
| May, 2024 | $26.18 | $17.07 | $9.11 | 32,559.6 | -4.13% |
| Apr, 2024 | $25.20 | $16.15 | $9.05 | 15,425.0 | -21.33% |
| Mar, 2024 | $26.18 | $12.46 | $13.72 | 28,383.2 | +66.67% |
| Feb, 2024 | $16.80 | $11.48 | $5.32 | 8,930.5 | +10.53% |
| Jan, 2024 | $14.56 | $10.27 | $4.29 | 3,924.2 | -4.04% |
Protagenic Therapeutics Inc Stock (PTIX) Price History 2023
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Dec, 2023 | $17.36 | $9.52 | $7.84 | 17,873.7 | +32.00% |
| Nov, 2023 | $12.29 | $9.94 | $2.35 | 7,366.6 | -3.47% |
| Oct, 2023 | $26.04 | $10.16 | $15.88 | 46,039.7 | -57.77% |
| Sep, 2023 | $27.72 | $22.68 | $5.04 | 10,895.9 | -3.16% |
| Aug, 2023 | $30.66 | $25.27 | $5.39 | 5,632.9 | -11.68% |
| Jul, 2023 | $31.08 | $27.44 | $3.64 | 3,015.1 | +5.97% |
| Jun, 2023 | $29.26 | $24.08 | $5.18 | 4,389.2 | +2.01% |
| May, 2023 | $32.48 | $25.20 | $7.28 | 9,866.3 | +6.42% |
| Apr, 2023 | $27.86 | $21.56 | $6.30 | 11,664.0 | +8.09% |
| Mar, 2023 | $32.06 | $17.48 | $14.58 | 24,568.9 | +0.51% |
| Feb, 2023 | $34.02 | $23.24 | $10.78 | 4,906.3 | -20.33% |
| Jan, 2023 | $35.28 | $21.96 | $13.32 | 9,918.9 | +35.02% |
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