Protagenic Therapeutics, Inc. (PTIX) NASDAQ

Currency In USD

PTIX Historical Return

If you invested $1000 in Protagenic Therapeutics, Inc. (PTIX) since IPO date, it would be worth $3.24 as of June 23, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $2.39, while $1000 invested 1 year ago would be worth $114.85. This corresponds to total returns of -99.68%, -99.76%, -88.52%, respectively, with annualized returns of -67.08%, -70.07%, -88.52%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

PTIX Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
June 22, 2026	0.41	0.41	0.41	0.41	0.41	7,998
June 17, 2026	0.41	0.41	0.41	0.41	0.41	1,891
June 16, 2026	0.41	0.41	0.41	0.41	0.41	3,307
June 15, 2026	0.4	0.4	0.4	0.4	0.4	400
June 12, 2026	0.54	0.4	0.4	0.54	0.4	22,874
June 11, 2026	0.68	0.68	0.68	0.68	0.68	500
June 10, 2026	0.54	0.54	0.54	0.54	0.54	4,901
June 09, 2026	0.5	0.53	0.53	0.53	0.5	1,323
June 02, 2026	0.5	0.5	0.5	0.55	0.5	3,818
June 01, 2026	0.55	0.4	0.4	0.55	0.4	2,171
May 29, 2026	0.54	0.54	0.54	0.54	0.54	3
May 27, 2026	0.46	0.46	0.46	0.46	0.46	400
May 26, 2026	0.64	0.47	0.47	0.65	0.47	3,482
May 18, 2026	0.65	0.65	0.65	0.65	0.65	140
May 15, 2026	0.65	0.65	0.65	0.65	0.65	359
May 12, 2026	0.53	0.43	0.43	0.53	0.43	24,948
May 11, 2026	0.82	0.65	0.65	0.82	0.53	2,489
May 08, 2026	0.64	0.79	0.79	0.8	0.62	6,765
May 07, 2026	0.53	0.58	0.58	0.58	0.53	846
May 06, 2026	0.53	0.55	0.55	0.55	0.53	232
May 05, 2026	0.72	0.57	0.57	0.72	0.57	10,142
May 04, 2026	0.72	0.72	0.72	0.72	0.72	300
May 01, 2026	0.84	0.8	0.8	0.84	0.8	2,512
April 30, 2026	0.88	0.88	0.88	0.88	0.88	2,025
April 29, 2026	1.08	0.88	0.88	1.2	0.88	9,251
April 28, 2026	0.99	1.04	1.04	1.04	0.95	25,300
April 27, 2026	0.86	0.95	0.95	1	0.86	18,176
April 24, 2026	0.7	0.82	0.82	0.82	0.7	9,005
April 23, 2026	0.66	0.74	0.74	0.74	0.66	7,083
April 22, 2026	0.66	0.66	0.66	0.66	0.66	434
April 21, 2026	0.53	0.66	0.66	0.66	0.53	4,839
April 20, 2026	0.53	0.55	0.55	0.55	0.53	1,003
April 17, 2026	0.56	0.57	0.57	0.57	0.56	1,280
April 16, 2026	0.54	0.54	0.54	0.54	0.54	121
April 14, 2026	0.55	0.55	0.55	0.55	0.55	1,000
April 13, 2026	0.59	0.55	0.55	0.59	0.55	5,000
April 08, 2026	0.53	0.53	0.53	0.53	0.53	485
April 07, 2026	0.53	0.53	0.53	0.7	0.53	2,600
April 06, 2026	0.53	0.53	0.53	0.53	0.53	420
April 02, 2026	0.57	0.53	0.53	0.57	0.53	3,289
April 01, 2026	0.52	0.52	0.57	0.52	0.52	186
March 31, 2026	0.63	0.52	0.68	0.73	0.52	2,168
March 30, 2026	0.59	0.59	0.63	0.59	0.59	1,000
March 27, 2026	0.53	0.53	0.52	0.53	0.53	3
March 26, 2026	0.54	0.54	0.75	0.75	0.54	3,973
March 25, 2026	0.72	0.7	0.7	0.76	0.7	2,000
March 24, 2026	0.7	0.7	0.7	0.7	0.7	343
March 23, 2026	0.68	0.72	0.72	0.72	0.68	153
March 20, 2026	0.62	0.73	0.66	0.73	0.62	1,211
March 19, 2026	0.63	0.73	0.62	0.73	0.63	492
March 18, 2026	0.56	0.7	0.7	0.71	0.56	13,048
March 17, 2026	0.55	0.56	0.54	0.56	0.55	600
March 16, 2026	0.49	0.49	0.49	0.49	0.49	0
March 13, 2026	0.49	0.49	0.49	0.49	0.49	10,533
March 12, 2026	0.52	0.49	0.49	0.52	0.49	10,533
March 11, 2026	0.49	0.49	0.49	0.49	0.49	10,533
March 10, 2026	0.51	0.59	0.49	0.59	0.51	10,533
March 09, 2026	0.45	0.42	0.42	0.54	0.42	4,600
March 06, 2026	-1	-1	0.42	-1	-1	0
March 05, 2026	0.42	0.42	0.42	0.45	0.42	7,500