Protagonist Therapeutics Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Oct 30, 2026	144.34	146.00	142.54	144.85	144.85	0.35%	322,552
Oct 29, 2026	144.03	146.44	142.87	144.34	144.34	1.55%	325,557
Oct 28, 2026	139.35	143.26	138.29	142.14	142.14	0.72%	318,458
Oct 27, 2026	140.08	142.37	137.91	141.12	141.12	0.57%	865,925
Oct 26, 2026	139.24	142.00	137.30	140.32	140.32	1.37%	823,277
Oct 23, 2026	136.89	139.52	135.00	138.43	138.43	-0.79%	409,356
Oct 22, 2026	137.49	141.38	136.07	139.53	139.53	1.05%	404,387
Oct 21, 2026	139.71	141.85	137.96	138.08	138.08	0.07%	990,174
Oct 20, 2026	135.87	140.82	134.33	137.99	137.99	2.64%	774,484
Oct 19, 2026	130.09	134.97	128.01	134.44	134.44	4.42%	654,178
Oct 16, 2026	136.16	136.56	126.39	128.75	128.75	-5.71%	886,812
Oct 15, 2026	136.72	139.11	136.03	136.55	136.55	0.20%	707,740
Oct 14, 2026	138.06	141.13	135.62	136.28	136.28	-1.60%	679,101
Oct 13, 2026	146.00	146.00	137.81	138.49	138.49	-4.41%	1,031,829
Oct 12, 2026	145.83	152.19	143.69	144.88	144.88	0.80%	898,518
Oct 9, 2026	139.91	146.30	138.95	143.73	143.73	2.73%	763,098
Oct 8, 2026	139.57	142.18	137.99	139.91	139.91	-0.72%	1,000,048
Oct 7, 2026	137.34	144.10	137.25	140.92	140.92	1.61%	927,270
Oct 6, 2026	140.34	141.00	136.09	138.69	138.69	-1.38%	635,715
Oct 5, 2026	139.96	142.51	138.08	140.63	140.63	0.41%	1,273,822
Oct 2, 2026	140.99	141.71	138.37	140.06	140.06	0.63%	760,303
Oct 1, 2026	139.23	143.68	138.37	139.19	139.19	-1.21%	886,245
Sep 30, 2026	141.60	143.74	140.44	140.89	140.89	-0.06%	787,658
Sep 29, 2026	143.45	144.09	138.88	140.97	140.97	-1.03%	508,013
Sep 28, 2026	142.21	143.69	140.24	142.44	142.44	0.41%	925,462
Sep 25, 2026	141.81	143.45	138.23	141.86	141.86	3.29%	809,292
Sep 24, 2026	138.76	140.80	134.10	137.34	137.34	-0.98%	989,225
Sep 23, 2026	144.27	145.28	137.88	138.70	138.70	-4.39%	513,226
Sep 22, 2026	144.64	147.71	144.50	145.07	145.07	0.06%	806,176
Sep 21, 2026	143.22	145.37	141.09	144.98	144.98	1.38%	822,198
Sep 18, 2026	143.09	144.58	140.44	143.00	143.00	-0.49%	1,837,204
Sep 17, 2026	144.39	146.50	142.31	143.70	143.70	0.60%	558,901
Sep 16, 2026	144.19	146.19	140.88	142.84	142.84	-0.39%	507,311
Sep 15, 2026	147.48	147.99	142.00	143.40	143.40	-2.96%	637,522
Sep 14, 2026	150.23	151.24	146.83	147.78	147.78	-0.27%	608,017
Sep 11, 2026	147.18	150.48	145.82	148.18	148.18	2.08%	478,038
Sep 10, 2026	143.29	146.51	142.00	145.16	145.16	0.05%	543,129
Sep 9, 2026	146.05	151.19	144.46	145.09	145.09	-0.58%	530,534
Sep 8, 2026	143.61	147.29	142.00	145.94	145.94	0.15%	700,126
Sep 4, 2026	146.47	147.99	144.01	145.72	145.72	-2.07%	501,305
Sep 3, 2026	146.68	149.49	144.00	148.80	148.80	1.86%	354,191
Sep 2, 2026	148.00	149.42	144.61	146.08	146.08	-0.28%	561,612
Sep 1, 2026	147.75	150.34	144.73	146.49	146.49	-0.85%	534,144
Aug 31, 2026	143.26	149.30	141.95	147.75	147.75	2.37%	567,395
Aug 28, 2026	147.73	147.95	142.43	144.33	144.33	-3.46%	501,247
Aug 27, 2026	150.35	151.68	147.11	149.50	149.50	-1.32%	381,590
Aug 26, 2026	150.36	152.07	147.69	151.50	151.50	0.60%	335,462
Aug 25, 2026	155.84	157.98	150.09	150.59	150.59	-2.67%	664,526
Aug 24, 2026	154.32	158.08	149.94	154.72	154.72	0.26%	483,342
Aug 21, 2026	152.10	154.95	150.82	154.32	154.32	2.41%	402,542