ALDX Historical Stock Prices & CSV Downloads

Aldeyra Therapeutics, Inc. (ALDX), daily historical prices. Prices in USD.
Date	Open	High	Low	Close		Volume
Oct 30, 2026	0.67	0.68	0.55	0.56	0.56	896,600
Oct 29, 2026	0.67	0.72	0.66	0.66	0.66	418,100
Oct 28, 2026	0.64	0.69	0.63	0.68	0.68	725,000
Oct 27, 2026	0.63	0.67	0.62	0.64	0.64	991,800
Oct 26, 2026	0.66	0.67	0.63	0.64	0.64	786,300
Oct 23, 2026	0.63	0.65	0.60	0.65	0.65	821,600
Oct 22, 2026	0.67	0.74	0.63	0.65	0.65	717,800
Oct 21, 2026	0.74	0.75	0.66	0.67	0.67	596,700
Oct 20, 2026	0.65	0.75	0.65	0.73	0.73	1,646,900
Oct 19, 2026	0.70	0.72	0.66	0.67	0.67	861,700
Oct 16, 2026	0.74	0.74	0.65	0.70	0.70	1,810,300
Oct 15, 2026	0.77	0.80	0.73	0.74	0.74	1,233,500
Oct 14, 2026	0.88	0.90	0.79	0.79	0.79	1,578,400
Oct 13, 2026	0.89	0.91	0.87	0.90	0.90	1,456,500
Oct 12, 2026	0.92	0.94	0.88	0.91	0.91	1,340,300
Oct 9, 2026	0.94	0.97	0.92	0.92	0.92	699,000
Oct 8, 2026	0.96	0.97	0.91	0.95	0.95	1,178,300
Oct 7, 2026	0.91	0.97	0.88	0.96	0.96	1,287,000
Oct 6, 2026	0.95	0.99	0.86	0.92	0.92	8,232,300
Oct 5, 2026	1.18	1.19	0.90	0.92	0.92	7,026,300
Oct 2, 2026	1.31	1.31	1.15	1.17	1.17	2,269,900
Oct 1, 2026	1.26	1.31	1.20	1.29	1.29	1,211,300
Sep 30, 2026	1.34	1.35	1.22	1.23	1.23	1,650,600
Sep 29, 2026	1.17	1.44	1.16	1.32	1.32	5,448,800
Sep 28, 2026	1.18	1.22	1.15	1.16	1.16	1,019,700

Historical stock data.