Protagenic Therapeutics, Inc. (PTIX)
NASDAQ: PTIX · Real-Time Price · USD
4.290
+0.050 (1.18%)
At close: Sep 26, 2025, 4:00 PM EDT
4.260
-0.030 (-0.70%)
After-hours: Sep 26, 2025, 7:30 PM EDT

Protagenic Therapeutics Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Sep 26, 20254.274.364.214.294.291.18%41,259
Sep 25, 20254.104.434.034.244.243.16%135,194
Sep 24, 20254.394.394.094.114.11-5.52%127,595
Sep 23, 20254.534.554.284.354.35-0.46%139,739
Sep 22, 20254.194.494.104.374.377.90%142,993
Sep 19, 20253.834.093.734.054.055.74%135,897
Sep 18, 20253.583.943.583.833.834.08%80,912
Sep 17, 20253.363.733.363.683.688.24%81,174
Sep 16, 20253.383.473.333.403.401.80%47,988
Sep 15, 20253.353.383.223.343.343.73%57,102
Sep 12, 20253.213.343.093.223.22-3.01%35,367
Sep 11, 20252.853.392.793.323.3216.08%204,890
Sep 10, 20252.842.902.832.862.86-35,892
Sep 9, 20252.822.892.752.862.860.35%107,658
Sep 8, 20253.053.102.852.852.85-9.52%147,748
Sep 5, 20253.103.213.103.153.151.61%129,552
Sep 4, 20253.283.303.103.103.10-4.91%68,456
Sep 3, 20253.603.603.153.263.26-9.19%153,138
Sep 2, 20253.673.673.513.593.59-0.28%107,424
Aug 29, 20253.663.673.533.603.601.41%154,686
Aug 28, 20253.853.893.523.553.55-8.97%258,179
Aug 27, 20253.904.083.843.903.90-1.76%227,301
Aug 26, 20254.574.783.793.973.97-11.97%675,751
Aug 25, 20254.065.154.064.514.516.37%2,945,144
Aug 22, 20253.924.413.624.244.24-0.47%2,384,373
Aug 21, 20253.646.203.554.264.2686.84%158,176,479
Aug 20, 20252.582.582.252.282.28-10.94%66,190
Aug 19, 20252.782.782.502.562.56-7.91%59,534
Aug 18, 20252.913.082.642.782.78-5.12%50,113
Aug 15, 20253.153.152.862.932.93-4.56%83,197
Aug 14, 20252.783.242.663.073.0710.43%494,655
Aug 13, 20252.702.812.662.782.781.09%96,456
Aug 12, 20252.762.782.602.752.75-1.79%38,886
Aug 11, 20252.752.862.752.802.80-1.06%19,841
Aug 8, 20252.722.942.722.832.830.35%41,539
Aug 7, 20252.882.882.762.822.82-2.08%32,679
Aug 6, 20252.963.002.702.882.88-5.11%113,528
Aug 5, 20252.703.092.623.043.0412.83%194,717
Aug 4, 20252.722.742.672.692.69-1.10%43,168
Aug 1, 20252.842.902.672.722.72-7.48%90,081
Jul 31, 20253.253.252.902.942.94-7.84%92,231
Jul 30, 20253.063.223.003.193.193.91%217,929
Jul 29, 20253.233.232.983.073.07-6.40%66,802
Jul 28, 20253.343.343.233.283.280.61%34,195
Jul 25, 20253.273.303.253.263.260.62%26,900
Jul 24, 20253.343.343.183.243.24-3.86%116,238
Jul 23, 20253.373.393.243.373.370.90%151,677
Jul 22, 20253.253.353.133.343.345.03%112,982
Jul 21, 20253.433.503.133.183.18-7.02%151,460
Jul 18, 20253.453.513.333.423.42-3.12%121,984