Protagonist Therapeutics, Inc. (PTGX) NASDAQ

Currency In USD

PTGX Historical Return

If you invested $1000 in Protagonist Therapeutics, Inc. (PTGX) since IPO date, it would be worth $10,143.59 as of June 23, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $2,742.78, while $1000 invested 1 year ago would be worth $2,224.14. This corresponds to total returns of 914.36%, 174.28%, 122.41%, respectively, with annualized returns of 26.45%, 22.35%, 122.41%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

PTGX Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
June 22, 2026	113.24	115.03	115.03	116.57	113.24	1.19M
June 18, 2026	112.88	112.86	112.86	114.49	111.17	1.52M
June 17, 2026	110.84	111.44	111.44	113.47	110.11	685,664
June 16, 2026	112.83	110.64	110.64	113.66	108.53	338,750
June 15, 2026	109.1	112.46	112.46	112.77	109.1	451,324
June 12, 2026	109.85	109.78	109.78	111.78	109.6	447,341
June 11, 2026	106.28	109.79	109.79	110.82	106.28	561,677
June 10, 2026	105.5	105.77	105.77	111.45	104.89	767,020
June 09, 2026	99.76	105.87	105.87	106.48	98.08	875,273
June 08, 2026	98.95	98.03	98.03	101.16	96.7	564,913
June 05, 2026	103.14	97.38	97.38	103.29	96.38	871,163
June 04, 2026	96.39	102.79	102.79	103.55	96.14	657,797
June 03, 2026	93.93	95.41	95.41	95.61	93	554,292
June 02, 2026	93.84	93.23	93.23	97.71	92.75	720,165
June 01, 2026	97.88	94.92	94.92	98.5	93.5	814,949
May 29, 2026	100.64	99.56	99.56	102.4	98.84	567,861
May 28, 2026	102.74	100.41	100.41	103.71	99.43	551,472
May 27, 2026	100.05	102.21	102.21	102.49	98.94	404,783
May 26, 2026	100.03	99.98	99.98	100.8	97.93	360,749
May 22, 2026	102.01	99.19	99.19	102.42	99.13	360,762
May 21, 2026	101.13	102.01	102.01	103.43	98.6	402,437
May 20, 2026	99.03	100.88	100.88	101.9	98.37	371,675
May 19, 2026	100.38	98.37	98.37	100.38	96.92	485,534
May 18, 2026	103.22	100.74	100.74	104.16	100.58	447,230
May 15, 2026	104.22	102.18	102.18	104.39	101.72	560,751
May 14, 2026	104.3	105.55	105.55	105.72	101.67	407,143
May 13, 2026	99.58	103.88	103.88	104.2	98.22	518,199
May 12, 2026	103.5	99.95	99.95	103.66	98.36	645,706
May 11, 2026	100.14	103.5	103.5	105.33	99.94	572,030
May 08, 2026	98.51	99.36	99.36	100.15	97	504,963
May 07, 2026	103.55	98.85	98.85	104.68	98.53	836,855
May 06, 2026	103	103.97	103.97	105.03	98.95	989,851
May 05, 2026	100.32	99.21	99.21	101.37	97.45	391,053
May 04, 2026	98	99.52	99.52	101.08	98	457,421
May 01, 2026	99.16	98.37	98.37	99.47	97.08	447,658
April 30, 2026	99	98.97	98.97	99.76	97.2	575,916
April 29, 2026	100.27	98.52	98.52	100.35	98.11	574,104
April 28, 2026	99.5	101.21	101.21	102.47	97.8	585,159
April 27, 2026	100.44	98.51	98.51	103.42	98.31	964,181
April 24, 2026	102.54	100	100	105.94	98.9	666,119
April 23, 2026	106.34	102.62	102.62	106.98	102.26	651,593
April 22, 2026	106.43	105.55	105.55	107	103.93	345,047
April 21, 2026	104.94	105.89	105.89	106.45	103.64	494,722
April 20, 2026	105.47	105.47	105.47	106.46	104	536,526
April 17, 2026	105.57	105.98	105.98	106.9	103.51	1.01M
April 16, 2026	103.59	103.73	103.73	104.53	102.46	415,250
April 15, 2026	105.96	105.44	105.44	106.66	103.02	763,201
April 14, 2026	97.58	104.72	104.72	104.97	97.58	704,529
April 13, 2026	98.61	97.57	97.57	101.04	95.4	1.09M
April 10, 2026	104.28	98.82	98.82	104.28	98.4	565,637
April 09, 2026	101.45	104.09	104.09	105.11	101.45	699,221
April 08, 2026	104.28	102.09	102.09	105.88	101.62	817,078
April 07, 2026	103.43	103.75	103.75	103.96	101.31	785,703
April 06, 2026	103.72	102.89	102.89	104.46	101.84	483,856
April 02, 2026	101.59	103.78	103.78	104.31	101.59	601,592
April 01, 2026	105.51	103.67	103.67	107.84	102.7	583,084
March 31, 2026	101.23	105.4	105.4	105.99	101.06	944,313
March 30, 2026	99.04	99.87	99.87	102.76	98.08	884,395
March 27, 2026	101.27	98.97	98.97	101.92	97.89	781,903
March 26, 2026	103.25	102.17	102.17	105.69	102.01	1.05M