Protagonist Therapeutics, Inc. - PTGX - Stock Historical Data & Price

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
February 20, 2026	83.26	82.76	82.76	83.69	80.72	578,000
February 19, 2026	81.88	83.09	83.09	83.22	80.59	384,600
February 18, 2026	81.59	82.99	82.99	83.4	81.59	408,213
February 17, 2026	81.07	82.46	82.46	83.13	80.4	364,763
February 13, 2026	81.99	81.49	81.49	84.06	80.59	428,900
February 12, 2026	84.07	81.93	81.93	84.72	81.56	352,500
February 11, 2026	83.46	83.49	83.49	84.82	80.99	350,200
February 10, 2026	83	83.88	83.88	84.9	82.65	442,600
February 09, 2026	83.47	83.32	83.32	83.9	82.21	322,026
February 06, 2026	82.11	84.49	84.49	85.05	81.55	812,801
February 05, 2026	83.62	80.67	80.67	85.43	80.2	457,128
February 04, 2026	85.59	83.3	83.3	85.6	81	1.08M
February 03, 2026	83.09	85.59	85.59	86.1	82.88	769,400
February 02, 2026	81.8	83.05	83.05	84.55	81.14	1.41M
January 30, 2026	79.77	81.8	81.8	82.56	78.75	1.17M
January 29, 2026	81.39	79.73	79.73	82.49	77.69	952,738
January 28, 2026	82.45	81.76	81.76	83.69	80	777,238
January 27, 2026	82	83.08	83.08	83.87	82	507,807
January 26, 2026	82.53	82.3	82.3	84.32	81.94	529,200
January 23, 2026	84.62	83.1	83.1	85.5	82.67	569,300
January 22, 2026	82.83	84.79	84.79	85.2	80.65	609,100
January 21, 2026	82.51	83.89	83.89	83.96	80.27	1.09M
January 20, 2026	81.16	83.42	83.42	83.63	79.87	901,339
January 16, 2026	84.51	81.99	81.99	84.67	81.47	664,933
January 15, 2026	84.6	84.75	84.75	87.44	84.33	839,322
January 14, 2026	80.85	85.23	85.23	85.3	80.47	1.05M
January 13, 2026	80.52	81.36	81.36	82.74	79.64	782,285
January 12, 2026	79.49	80.25	80.25	81.09	78.75	739,820
January 09, 2026	80.2	80.22	80.22	81.4	79.38	983,627
January 08, 2026	81.05	80.2	80.2	82.14	79.22	1.49M
January 07, 2026	82.25	82.34	82.34	82.69	79.18	1.22M
January 06, 2026	83.25	82.27	82.27	85	81.67	731,149
January 05, 2026	87.53	84.18	84.18	87.53	82.92	1.03M
January 02, 2026	86.54	87.18	87.18	88.16	85.19	751,700
December 31, 2025	87.32	87.34	87.34	88.23	85.98	615,725
December 30, 2025	87.94	87.26	87.26	88.32	86.12	344,000
December 29, 2025	88.66	87.93	87.93	89.1	87.3	373,123
December 26, 2025	88.78	88.78	88.78	89.61	87.47	390,105
December 24, 2025	88.53	88.84	88.84	89.47	87.47	154,100
December 23, 2025	87.27	88.73	88.73	90	87.27	329,131
December 22, 2025	85.33	87.41	87.41	88.13	84.88	661,134
December 19, 2025	86.58	86.05	86.05	87.73	84.81	1.74M
December 18, 2025	89.35	85.79	85.79	90.02	84.11	2.23M
December 17, 2025	91.41	89.34	89.34	92.54	88.38	821,795
December 16, 2025	93.93	91.54	91.54	94.54	90.18	848,833
December 15, 2025	95.41	94.79	94.79	96.54	94.17	960,000
December 12, 2025	92.72	95.35	95.35	95.39	91.7	1.29M
December 11, 2025	92.01	92.25	92.25	93.07	91.07	800,761
December 10, 2025	88.56	91.38	91.38	91.96	88.34	1.31M
December 09, 2025	89.73	88.56	88.56	92.8	88.3	1.44M
December 08, 2025	90.94	90.25	90.25	91.89	89.51	1.46M
December 05, 2025	87.96	89.65	89.65	90.18	87.54	1.47M
December 04, 2025	86.07	87.33	87.33	88.1	85.13	733,244
December 03, 2025	85.43	86.07	86.07	87.1	84.73	715,548
December 02, 2025	85.75	84.65	84.65	86.39	83.52	992,805
December 01, 2025	89.61	85.64	85.64	89.85	85	999,816
November 28, 2025	90	90	90	90.46	88.78	337,400
November 26, 2025	90	90.07	90.07	90.85	89.5	1.21M
November 25, 2025	88.46	89.86	89.86	89.88	87.76	911,005
November 24, 2025	86.59	87.69	87.69	88.34	85.71	872,400

Protagonist Therapeutics, Inc. (PTGX) NASDAQ