Ionis Pharmaceuticals Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Sep 15, 2025	62.94	63.21	61.03	61.11	61.11	-4.09%	2,819
Sep 12, 2025	62.75	64.49	62.75	63.72	63.72	0.91%	1,216
Sep 11, 2025	63.94	63.94	62.79	63.14	63.14	-0.38%	978
Sep 10, 2025	64.43	65.63	62.97	63.38	63.38	-0.83%	618
Sep 9, 2025	62.20	64.26	61.04	63.91	63.91	6.23%	8,925
Sep 8, 2025	61.20	61.20	59.72	60.16	60.16	-2.08%	2,586
Sep 5, 2025	59.43	61.88	59.16	61.44	61.44	4.06%	1,278
Sep 4, 2025	59.69	60.74	58.87	59.04	59.04	-2.81%	2,804
Sep 3, 2025	58.92	61.95	58.40	60.75	60.75	6.72%	8,906
Sep 2, 2025	53.00	57.31	48.25	56.92	56.92	34.83%	21,127
Aug 29, 2025	42.58	42.71	41.99	42.22	42.22	-1.90%	115
Aug 28, 2025	42.61	43.35	42.61	43.03	43.03	0.55%	283
Aug 27, 2025	42.17	42.87	42.12	42.80	42.80	1.90%	55
Aug 26, 2025	42.03	42.38	41.51	42.00	42.00	0.05%	674
Aug 25, 2025	43.45	43.45	41.98	41.98	41.98	-1.16%	385
Aug 22, 2025	43.01	43.89	42.22	42.47	42.47	-0.86%	759
Aug 21, 2025	42.55	44.52	42.52	42.84	42.84	0.83%	2,657
Aug 20, 2025	42.95	43.05	42.05	42.49	42.49	-0.49%	348
Aug 19, 2025	43.49	43.93	42.70	42.70	42.70	-1.84%	381
Aug 18, 2025	44.00	44.19	43.50	43.50	43.50	-0.15%	487
Aug 15, 2025	42.94	43.56	42.80	43.56	43.56	1.75%	749
Aug 14, 2025	43.00	43.13	42.43	42.81	42.81	0.75%	530
Aug 13, 2025	42.02	42.84	41.48	42.50	42.50	5.06%	1,568
Aug 12, 2025	40.85	41.22	40.38	40.45	40.45	-3.12%	71
Aug 11, 2025	42.16	42.16	41.50	41.75	41.75	1.64%	41
Aug 8, 2025	41.00	41.15	40.75	41.08	41.08	0.39%	67
Aug 7, 2025	40.40	40.92	40.24	40.92	40.92	-0.50%	283
Aug 6, 2025	41.64	41.77	40.97	41.13	41.13	-4.80%	316
Aug 5, 2025	43.15	43.31	43.15	43.20	43.20	-0.75%	440
Aug 4, 2025	42.60	43.53	42.52	43.53	43.53	0.97%	1,711
Aug 1, 2025	42.98	43.19	42.38	43.11	43.11	1.07%	43
Jul 31, 2025	44.46	44.90	42.61	42.65	42.65	-2.20%	965
Jul 30, 2025	44.00	45.58	43.12	43.61	43.61	5.51%	3,264
Jul 29, 2025	40.81	41.62	40.81	41.33	41.33	-1.70%	42
Jul 28, 2025	42.70	42.70	42.05	42.05	42.05	0.84%	12
Jul 25, 2025	42.73	42.73	41.70	41.70	41.70	-1.36%	89
Jul 24, 2025	42.35	42.61	42.28	42.28	42.28	0.12%	101
Jul 23, 2025	42.67	42.67	41.91	42.23	42.23	0.66%	120
Jul 22, 2025	41.51	41.95	41.41	41.95	41.95	0.87%	145
Jul 21, 2025	41.56	42.46	41.53	41.59	41.59	-1.11%	200
Jul 18, 2025	42.46	42.46	41.83	42.05	42.05	-1.57%	125
Jul 17, 2025	43.08	43.08	42.72	42.72	42.72	0.17%	63
Jul 16, 2025	41.82	42.65	41.82	42.65	42.65	1.44%	102
Jul 15, 2025	42.90	42.90	42.05	42.05	42.05	-1.68%	70
Jul 14, 2025	41.38	42.76	41.30	42.76	42.76	2.28%	90
Jul 11, 2025	41.41	41.94	41.41	41.81	41.81	-1.72%	12
Jul 10, 2025	42.92	43.00	42.54	42.54	42.54	-0.32%	11
Jul 9, 2025	41.54	42.68	41.54	42.68	42.68	1.25%	313
Jul 8, 2025	41.86	42.15	41.53	42.15	42.15	0.67%	15
Jul 7, 2025	42.49	42.49	41.69	41.87	41.87	-3.41%	190