Protagenic Therapeutics Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
May 15, 2026	0.65	0.65	0.65	0.65	0.65	-	663
May 14, 2026	0.65	0.65	0.65	0.65	0.65	32.66%	329
May 13, 2026	0.49	0.49	0.49	0.49	0.49	1.24%	400
May 12, 2026	0.65	0.65	0.43	0.48	0.48	-25.55%	34,124
May 11, 2026	0.82	0.90	0.53	0.65	0.65	-17.72%	5,637
May 8, 2026	0.64	0.80	0.62	0.79	0.79	36.21%	7,553
May 7, 2026	0.53	0.60	0.53	0.58	0.58	5.45%	2,868
May 6, 2026	0.53	0.55	0.53	0.55	0.55	2.23%	237
May 5, 2026	0.72	0.72	0.54	0.54	0.54	-25.27%	11,030
May 4, 2026	0.74	0.74	0.72	0.72	0.72	-10.01%	440
May 1, 2026	0.84	0.84	0.80	0.80	0.80	-9.09%	3,350
Apr 30, 2026	0.88	0.88	0.88	0.88	0.88	-0.01%	2,090
Apr 29, 2026	1.08	1.20	0.88	0.88	0.88	-18.51%	11,369
Apr 28, 2026	0.99	1.08	0.95	1.08	1.08	11.23%	32,180
Apr 27, 2026	0.86	1.00	0.86	0.97	0.97	19.88%	35,864
Apr 24, 2026	0.73	0.82	0.73	0.81	0.81	11.91%	21,292
Apr 23, 2026	0.69	0.77	0.67	0.72	0.72	4.93%	13,055
Apr 22, 2026	0.66	0.69	0.66	0.69	0.69	4.52%	3,077
Apr 21, 2026	0.53	0.68	0.53	0.66	0.66	20.02%	14,936
Apr 20, 2026	0.57	0.57	0.53	0.55	0.55	-3.49%	6,302
Apr 17, 2026	0.56	0.57	0.54	0.57	0.57	2.67%	2,423
Apr 16, 2026	0.54	0.56	0.54	0.56	0.56	4.72%	1,666
Apr 15, 2026	0.56	0.57	0.53	0.53	0.53	-5.20%	4,660
Apr 14, 2026	0.55	0.56	0.55	0.56	0.56	1.65%	1,472
Apr 13, 2026	0.59	0.59	0.55	0.55	0.55	-5.98%	5,499
Apr 10, 2026	0.65	0.65	0.59	0.59	0.59	-15.19%	1,407
Apr 8, 2026	0.53	0.70	0.53	0.69	0.69	30.15%	9,451
Apr 7, 2026	0.53	0.70	0.53	0.53	0.53	-	2,631
Apr 6, 2026	0.53	0.53	0.53	0.53	0.53	-	495
Apr 2, 2026	0.57	0.72	0.52	0.53	0.53	-7.03%	7,284
Apr 1, 2026	0.52	0.68	0.52	0.57	0.57	-15.85%	1,311
Mar 31, 2026	0.63	0.73	0.63	0.68	0.68	8.40%	3,561
Mar 30, 2026	0.59	0.68	0.59	0.63	0.63	20.19%	1,464
Mar 27, 2026	0.69	0.74	0.52	0.52	0.52	-30.67%	1,220
Mar 26, 2026	0.50	0.75	0.50	0.75	0.75	7.14%	6,238
Mar 25, 2026	0.72	0.76	0.60	0.70	0.70	-	12,865
Mar 24, 2026	0.70	0.70	0.70	0.70	0.70	-2.78%	354
Mar 23, 2026	0.68	0.72	0.68	0.72	0.72	9.09%	457
Mar 20, 2026	0.62	0.73	0.62	0.66	0.66	6.45%	5,422
Mar 19, 2026	0.70	0.73	0.62	0.62	0.62	-10.79%	3,408
Mar 18, 2026	0.56	0.71	0.56	0.70	0.70	28.11%	23,594
Mar 17, 2026	0.55	0.56	0.54	0.54	0.54	10.69%	2,202
Mar 12, 2026	0.52	0.52	0.49	0.49	0.49	-	2,327
Mar 10, 2026	0.45	0.60	0.45	0.49	0.49	16.39%	20,322
Mar 9, 2026	0.45	0.54	0.42	0.42	0.42	-	4,570
Mar 5, 2026	0.42	0.45	0.42	0.42	0.42	-15.78%	7,461
Mar 3, 2026	0.45	0.50	0.45	0.50	0.50	10.94%	2,974
Mar 2, 2026	0.45	0.47	0.45	0.45	0.45	-3.08%	6,549
Feb 27, 2026	0.45	0.47	0.45	0.47	0.47	-	1,989
Feb 26, 2026	0.45	0.50	0.45	0.47	0.47	13.94%	16,276