Protagenic Therapeutics Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Feb 23, 2026	0.43	0.50	0.43	0.45	0.45	7.02%	5,735
Feb 20, 2026	0.42	0.42	0.42	0.42	0.42	-10.95%	405
Feb 19, 2026	0.39	0.51	0.35	0.47	0.47	12.43%	11,924
Feb 18, 2026	0.35	0.49	0.35	0.42	0.42	20.00%	7,748
Feb 17, 2026	0.40	0.40	0.35	0.35	0.35	-12.50%	3,193
Feb 13, 2026	0.40	0.40	0.40	0.40	0.40	-15.29%	9,026
Feb 12, 2026	0.46	0.47	0.25	0.47	0.47	-3.63%	41,799
Feb 11, 2026	0.42	0.49	0.42	0.49	0.49	28.95%	12,731
Feb 10, 2026	0.51	0.51	0.36	0.38	0.38	-4.45%	8,578
Feb 9, 2026	0.34	0.47	0.34	0.40	0.40	-0.58%	2,989
Feb 6, 2026	0.40	0.41	0.37	0.40	0.40	-0.67%	17,760
Feb 5, 2026	0.47	0.50	0.40	0.40	0.40	-17.80%	6,713
Feb 4, 2026	0.45	0.51	0.31	0.49	0.49	0.39%	17,830
Feb 3, 2026	0.47	0.49	0.47	0.49	0.49	-0.41%	14,683
Feb 2, 2026	0.47	0.51	0.47	0.49	0.49	2.85%	28,913
Jan 30, 2026	0.30	0.48	0.30	0.48	0.48	-4.72%	1,389
Jan 29, 2026	0.42	0.50	0.32	0.50	0.50	-3.66%	3,605
Jan 28, 2026	0.45	0.55	0.36	0.52	0.52	-4.91%	14,594
Jan 27, 2026	0.50	0.57	0.50	0.55	0.55	18.65%	8,616
Jan 26, 2026	0.45	0.57	0.45	0.46	0.46	-19.86%	21,953
Jan 23, 2026	0.55	0.57	0.44	0.57	0.57	-0.35%	2,431
Jan 22, 2026	0.44	0.59	0.44	0.58	0.58	33.95%	10,889
Jan 21, 2026	0.50	0.57	0.43	0.43	0.43	-14.12%	6,114
Jan 20, 2026	0.53	0.54	0.41	0.50	0.50	-15.14%	5,336
Jan 16, 2026	0.63	0.65	0.54	0.59	0.59	9.26%	6,379
Jan 15, 2026	0.59	0.59	0.54	0.54	0.54	-8.86%	2,026
Jan 14, 2026	0.62	0.65	0.51	0.59	0.59	-3.66%	6,631
Jan 13, 2026	0.54	0.66	0.50	0.62	0.62	11.82%	11,207
Jan 12, 2026	0.62	0.65	0.47	0.55	0.55	-11.59%	22,206
Jan 9, 2026	0.66	0.72	0.59	0.62	0.62	-5.50%	44,621
Jan 8, 2026	0.62	0.66	0.54	0.66	0.66	6.18%	34,356
Jan 7, 2026	0.55	0.72	0.55	0.62	0.62	14.18%	83,937
Jan 6, 2026	0.52	0.63	0.52	0.54	0.54	-4.74%	124,768
Jan 5, 2026	0.32	0.61	0.26	0.57	0.57	-22.97%	580,874
Jan 2, 2026	1.26	1.27	0.70	0.74	0.74	-43.08%	1,922,073
Dec 31, 2025	1.36	1.48	1.30	1.30	1.30	-4.41%	74,169
Dec 30, 2025	1.44	1.50	1.32	1.36	1.36	-8.72%	49,838
Dec 29, 2025	1.36	1.50	1.29	1.49	1.49	12.45%	59,731
Dec 26, 2025	1.14	1.35	1.13	1.33	1.33	15.22%	67,968
Dec 24, 2025	1.21	1.22	1.12	1.15	1.15	-6.88%	45,266
Dec 23, 2025	1.25	1.26	1.24	1.24	1.24	-0.40%	11,235
Dec 22, 2025	1.18	1.26	1.17	1.24	1.24	4.20%	60,865
Dec 19, 2025	1.30	1.31	1.19	1.19	1.19	-7.75%	49,619
Dec 18, 2025	1.41	1.41	1.25	1.29	1.29	-5.84%	69,960
Dec 17, 2025	1.48	1.52	1.34	1.37	1.37	-9.87%	56,393
Dec 16, 2025	1.55	1.56	1.48	1.52	1.52	-3.18%	43,491
Dec 15, 2025	1.62	1.63	1.53	1.57	1.57	-4.85%	43,346
Dec 12, 2025	1.56	1.68	1.55	1.65	1.65	4.43%	113,950
Dec 11, 2025	1.60	1.60	1.54	1.58	1.58	-5.95%	43,085
Dec 10, 2025	1.58	1.70	1.54	1.68	1.68	3.70%	100,135