Atossa Therapeutics, Inc. (ATOS) NASDAQ

Currency In USD

ATOS Historical Return

If you invested $1000 in Atossa Therapeutics, Inc. (ATOS) 10 years ago, it would be worth $5.16 as of September 30, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $39.88, while $1000 invested 1 year ago would be worth $149.88. This corresponds to total returns of -99.48%, -96.01%, -85.01%, respectively, with annualized returns of -40.93%, -47.48%, -85.01%.

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

ATOS Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
September 29, 2026	2.06	1.99	1.99	2.16	1.96	83,318
September 28, 2026	1.91	1.96	1.96	2.04	1.84	152,908
September 25, 2026	2.06	1.9	1.9	2.07	1.89	77,555
September 24, 2026	2.15	2.05	2.05	2.22	2.05	37,214
September 23, 2026	2.25	2.18	2.18	2.26	2.15	37,187
September 22, 2026	2.41	2.26	2.26	2.43	2.24	116,688
September 21, 2026	2.25	2.25	2.25	2.39	2.25	67,144
September 18, 2026	2.39	2.22	2.22	2.39	2.22	39,576
September 17, 2026	2.42	2.4	2.4	2.43	2.37	32,470
September 16, 2026	2.45	2.42	2.42	2.47	2.38	45,767
September 15, 2026	2.48	2.37	2.37	2.49	2.37	43,777
September 11, 2026	2.44	2.51	2.51	2.54	2.43	58,611
September 10, 2026	2.49	2.34	2.34	2.56	2.33	47,222
September 09, 2026	2.54	2.4	2.4	2.54	2.4	24,798
September 08, 2026	2.49	2.52	2.52	2.59	2.44	41,338
September 04, 2026	2.51	2.52	2.52	2.6	2.5	28,019
September 03, 2026	2.5	2.53	2.53	2.6	2.46	0
September 02, 2026	2.4	2.46	2.46	2.51	2.39	44,770
September 01, 2026	2.48	2.42	2.42	2.5	2.32	91,773
August 31, 2026	2.54	2.5	2.5	2.55	2.5	53,194
August 28, 2026	2.62	2.58	2.58	2.62	2.5	47,949
August 27, 2026	2.67	2.64	2.64	2.68	2.58	23,107
August 26, 2026	2.66	2.65	2.65	2.7	2.61	26,288
August 25, 2026	2.62	2.68	2.68	2.69	2.58	49,681
August 24, 2026	2.56	2.64	2.64	2.64	2.45	0
August 21, 2026	2.59	2.54	2.54	2.62	2.51	25,566
August 20, 2026	2.62	2.59	2.59	2.62	2.44	70,950
August 19, 2026	2.64	2.64	2.64	2.76	2.55	0
August 18, 2026	2.77	2.59	2.59	2.78	2.57	0
August 17, 2026	2.62	2.79	2.79	2.97	2.55	192,366
August 14, 2026	2.54	2.6	2.6	2.69	2.43	95,873
August 13, 2026	2.36	2.56	2.56	2.56	2.36	0
August 12, 2026	2.32	2.35	2.35	2.37	2.32	31,171
August 11, 2026	2.39	2.36	2.36	2.39	2.27	0
August 10, 2026	2.26	2.37	2.37	2.45	2.26	68,885
August 07, 2026	2.38	2.36	2.36	2.45	2.24	0
August 06, 2026	2.39	2.42	2.42	2.44	2.26	30,699
August 05, 2026	2.31	2.39	2.39	2.39	2.31	36,764
August 04, 2026	2.18	2.31	2.31	2.34	2.18	54,042
August 03, 2026	2.1	2.17	2.17	2.19	2.07	24,330
July 31, 2026	2.19	2.07	2.07	2.19	2.05	79,039
July 30, 2026	2.29	2.19	2.19	2.3	2.18	32,032
July 29, 2026	2.37	2.31	2.31	2.39	2.28	40,548
July 28, 2026	2.36	2.42	2.42	2.49	2.33	45,902
July 27, 2026	2.3	2.36	2.36	2.45	2.3	36,740
July 24, 2026	2.41	2.3	2.3	2.46	2.25	40,640
July 23, 2026	2.44	2.41	2.41	2.55	2.41	37,170
July 22, 2026	2.43	2.43	2.43	2.49	2.37	26,253
July 21, 2026	2.46	2.4	2.4	2.56	2.4	104,944
July 20, 2026	2.48	2.49	2.49	2.58	2.4	115,839
July 17, 2026	2.39	2.49	2.49	2.5	2.27	47,724
July 16, 2026	2.42	2.39	2.39	2.46	2.34	68,859
July 15, 2026	2.32	2.44	2.44	2.44	2.23	95,129
July 14, 2026	2.35	2.26	2.26	2.36	2.23	157,687
July 13, 2026	2.37	2.4	2.4	2.42	2.21	177,603
July 10, 2026	2.37	2.37	2.37	2.39	2.22	65,740
July 09, 2026	2.4	2.36	2.36	2.4	2.29	143,899
July 08, 2026	2.45	2.45	2.45	2.52	2.38	125,605
July 07, 2026	2.37	2.49	2.49	2.6	2.19	424,125
July 06, 2026	2.16	2.28	2.28	2.38	2.16	227,986