Prothena Corporation Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Jan 8, 2026	9.03	9.16	9.00	9.03	-	-1.15%	77,683
Jan 7, 2026	9.00	9.47	8.96	9.13	9.13	1.78%	467,536
Jan 6, 2026	9.01	9.14	8.89	8.97	8.97	-1.43%	636,208
Jan 5, 2026	9.24	9.24	8.92	9.10	9.10	-1.09%	539,121
Jan 2, 2026	9.56	9.69	9.07	9.20	9.20	-3.66%	526,643
Dec 31, 2025	9.30	9.56	9.24	9.55	9.55	2.58%	466,240
Dec 30, 2025	9.45	9.52	9.29	9.31	9.31	-1.79%	353,433
Dec 29, 2025	9.49	9.55	9.34	9.48	9.48	-0.63%	493,479
Dec 26, 2025	9.67	9.67	9.43	9.54	9.54	-1.55%	422,345
Dec 24, 2025	9.46	9.74	9.23	9.69	9.69	2.11%	236,347
Dec 23, 2025	9.53	9.59	9.29	9.49	9.49	-1.96%	702,990
Dec 22, 2025	9.16	9.78	9.07	9.68	9.68	5.10%	685,146
Dec 19, 2025	9.38	9.56	9.11	9.21	9.21	-1.81%	4,034,524
Dec 18, 2025	9.46	9.67	9.32	9.38	9.38	-0.53%	525,538
Dec 17, 2025	9.78	9.91	9.39	9.43	9.43	-3.28%	508,027
Dec 16, 2025	9.95	10.16	9.52	9.75	9.75	-2.21%	638,928
Dec 15, 2025	10.37	10.50	9.94	9.97	9.97	-3.76%	852,645
Dec 12, 2025	10.40	10.49	10.20	10.36	10.36	0.29%	477,695
Dec 11, 2025	9.93	10.50	9.81	10.33	10.33	4.66%	693,399
Dec 10, 2025	10.28	10.32	9.69	9.87	9.87	-4.36%	961,391
Dec 9, 2025	10.70	10.80	10.23	10.32	10.32	-3.82%	532,153
Dec 8, 2025	11.20	11.30	10.71	10.73	10.73	-3.07%	561,870
Dec 5, 2025	11.18	11.48	10.98	11.07	11.07	-0.81%	434,696
Dec 4, 2025	11.04	11.57	10.95	11.16	11.16	-0.09%	1,161,191
Dec 3, 2025	10.40	11.48	10.31	11.17	11.17	7.92%	777,465
Dec 2, 2025	10.29	10.53	10.14	10.35	10.35	0.78%	615,124
Dec 1, 2025	10.98	11.13	10.22	10.27	10.27	-4.47%	648,509
Nov 28, 2025	10.52	10.83	10.46	10.75	10.75	3.07%	288,728
Nov 26, 2025	10.48	10.59	10.37	10.43	10.43	-0.67%	451,420
Nov 25, 2025	10.50	10.62	10.30	10.50	10.50	0.96%	515,553
Nov 24, 2025	10.55	10.91	10.29	10.40	10.40	-0.76%	776,169
Nov 21, 2025	10.02	10.69	9.90	10.48	10.48	4.28%	461,186
Nov 20, 2025	10.12	10.51	9.99	10.05	10.05	0.60%	460,489
Nov 19, 2025	10.29	10.49	9.97	9.99	9.99	-3.57%	479,680
Nov 18, 2025	10.18	10.42	9.96	10.36	10.36	1.07%	427,945
Nov 17, 2025	9.94	10.32	9.75	10.25	10.25	3.22%	827,245
Nov 14, 2025	10.04	10.33	9.93	9.93	9.93	-2.46%	504,462
Nov 13, 2025	10.83	10.83	10.12	10.18	10.18	-6.18%	679,641
Nov 12, 2025	10.36	10.90	10.22	10.85	10.85	3.53%	686,417
Nov 11, 2025	10.39	10.75	10.14	10.48	10.48	-0.47%	603,643
Nov 10, 2025	10.90	11.09	10.47	10.53	10.53	-0.28%	694,728
Nov 7, 2025	10.49	10.96	9.72	10.56	10.56	4.76%	928,366
Nov 6, 2025	10.30	10.50	10.02	10.08	10.08	-1.85%	557,222
Nov 5, 2025	10.17	10.45	10.00	10.27	10.27	0.10%	535,313
Nov 4, 2025	10.40	10.56	10.16	10.26	10.26	-2.66%	600,351
Nov 3, 2025	10.76	11.17	10.41	10.54	10.54	-1.95%	612,476
Oct 31, 2025	10.54	10.79	10.40	10.75	10.75	2.58%	479,954
Oct 30, 2025	10.63	10.82	10.35	10.48	10.48	-1.60%	381,487
Oct 29, 2025	10.60	10.80	10.34	10.65	10.65	1.04%	596,013
Oct 28, 2025	11.14	11.69	10.40	10.54	10.54	1.64%	969,343