Sionna Therapeutics, Inc. (SION) NASDAQ

Currency In USD

SION Historical Return

If you invested $1000 in Sionna Therapeutics, Inc. (SION) since IPO date, it would be worth $238.4 as of September 20, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 6 months ago would be worth $163.78, while $1000 invested 3 months ago would be worth $153.49. This corresponds to total returns of -76.16%, -83.62%, -84.65%, respectively, with annualized returns of -58.81%, -83.62%, -84.65%.

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

SION Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
September 18, 2026	7.12	5.96	5.96	7.19	5.9	3.68M
September 17, 2026	7.27	7.18	7.18	7.73	7.15	1.48M
September 16, 2026	6.95	7.04	7.04	7.37	6.91	1.97M
September 15, 2026	7.87	6.88	6.88	8	6.85	2.46M
September 11, 2026	7.79	7.85	7.85	8.03	7.47	1.21M
September 10, 2026	7.4	7.62	7.62	7.75	7.12	1.22M
September 09, 2026	7.27	7.48	7.48	7.55	7.17	766,148
September 08, 2026	7.13	7.3	7.3	7.56	6.89	883,782
September 04, 2026	6.68	7.18	7.18	7.22	6.62	917,642
September 03, 2026	7.31	6.75	6.75	7.56	6.7	1.24M
September 02, 2026	6.63	7.31	7.31	7.35	6.27	1.57M
September 01, 2026	5.95	6.46	6.46	6.48	5.93	1.4M
August 31, 2026	5.87	6.03	6.03	6.08	5.75	1.38M
August 28, 2026	5.97	5.87	5.87	6.06	5.82	782,913
August 27, 2026	6.14	6.06	6.06	6.25	5.97	773,767
August 26, 2026	6.2	6.17	6.17	6.29	6.02	921,540
August 25, 2026	5.6	6.25	6.25	6.3	5.58	1.97M
August 24, 2026	5.29	5.59	5.59	5.61	5.21	1.77M
August 21, 2026	5.54	5.29	5.29	5.72	5.27	1.92M
August 20, 2026	6.27	5.52	5.52	6.27	5.51	1.74M
August 19, 2026	6.09	6.25	6.25	6.28	5.88	0
August 18, 2026	5.75	5.94	5.94	5.98	5.6	2.05M
August 17, 2026	6.47	5.91	5.91	6.8	5.82	2.93M
August 14, 2026	6.24	6.46	6.46	6.66	6.15	2.86M
August 13, 2026	6.29	6.54	6.54	6.75	6.05	5.42M
August 12, 2026	4.99	6.25	6.25	6.4	4.97	0
August 11, 2026	4.5	5.1	5.1	5.48	4.49	0
August 10, 2026	4.85	4.5	4.5	5	4.01	38.31M
August 07, 2026	50.86	51.04	51.04	54.97	49.3	746,247
August 06, 2026	47.11	49.61	49.61	50.8	47.08	778,269
August 05, 2026	50.2	47.34	47.34	51.91	46.92	757,707
August 04, 2026	50.16	49.94	49.94	51.73	48.52	913,070
August 03, 2026	46.86	49.26	49.26	49.49	45.57	508,980
July 31, 2026	46.68	47.13	47.13	47.62	44.27	390,624
July 30, 2026	44.69	46.78	46.78	47.28	44.64	353,248
July 29, 2026	46.81	44.81	44.81	46.84	44.63	368,301
July 28, 2026	45.41	46.55	46.55	46.69	44.11	320,203
July 27, 2026	46.03	45.38	45.38	47.89	45.11	403,789
July 24, 2026	44.31	45.7	45.7	46.4	43.41	654,828
July 23, 2026	44.39	44.06	44.06	46.45	43.84	811,031
July 22, 2026	46.92	45.03	45.03	47.71	44.23	562,845
July 21, 2026	45.24	47.21	47.21	48	45.24	597,713
July 20, 2026	50.2	45.69	45.69	51.57	44.78	816,396
July 17, 2026	44.72	49.41	49.41	51	43.12	1.14M
July 16, 2026	44.17	45.29	45.29	48.22	43.47	1.1M
July 15, 2026	42.33	44.38	44.38	45.37	41.69	522,035
July 14, 2026	44.24	42.59	42.59	45.01	42.39	275,950
July 13, 2026	45.4	43.95	43.95	45.49	42.73	415,290
July 10, 2026	44.9	45.29	45.29	45.41	42.24	370,997
July 09, 2026	44	44.94	44.94	45.91	43.65	698,007
July 08, 2026	44.48	44	44	46.98	43.29	573,823
July 07, 2026	43.67	44.93	44.93	46.64	43	623,126
July 06, 2026	44.01	43.12	43.12	44.38	42.39	236,917
July 02, 2026	42.05	43.99	43.99	44.18	41.16	328,677
July 01, 2026	43.63	41.64	41.64	44.28	40.92	391,973
June 30, 2026	43.33	43.99	43.99	45	42.4	671,354
June 29, 2026	42.29	42.97	42.97	43.48	41.72	306,937
June 26, 2026	42.56	42.18	42.18	44.03	40.69	1.02M
June 25, 2026	41.09	42.77	42.77	44.3	40.44	475,583
June 24, 2026	39.81	41.09	41.09	41.28	39.18	544,387