Protagonist Therapeutics, Inc. (PTGX) NASDAQ

Currency In USD

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PTGX Historical Return

If you invested $1000 in Protagonist Therapeutics, Inc. (PTGX) 10 years ago, it would be worth $11,950 as of September 12, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $3,264.6, while $1000 invested 1 year ago would be worth $2,517.5. This corresponds to total returns of 1,095%, 226.46%, 151.75%, respectively, with annualized returns of 28.14%, 26.7%, 151.75%.

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

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PTGX Historical Data

Date Range:

DateOpenCloseAdj CloseHighLowVolume
September 11, 2026147.18148.18148.18150.48145.82478,019
September 10, 2026143.29145.16145.16146.51142537,977
September 09, 2026146.05145.09145.09151.19144.46530,488
September 08, 2026143.61145.94145.94147.29142635,096
September 04, 2026146.47145.72145.72147.99144.01500,978
September 03, 2026146.68148.8148.8149.49144353,885
September 02, 2026148146.08146.08149.42144.61561,501
September 01, 2026147.75146.49146.49150.34144.73534,120
August 31, 2026143.26147.75147.75149.29141.95567,259
August 28, 2026147.73144.33144.33147.95142.43499,771
August 27, 2026150.35149.5149.5151.68147.11381,588
August 26, 2026150.36151.5151.5152.07147.69335,461
August 25, 2026155.84150.59150.59157.98150.09664,522
August 24, 2026154.32154.72154.72158.08149.94483,338
August 21, 2026152.1154.32154.32154.95150.82402,517
August 20, 2026152.45150.69150.69155.25148.28518,555
August 19, 2026160.81154.94154.94160.81154.22785,876
August 18, 2026157.96157.34157.34160156.81471,646
August 17, 2026155.11158.62158.62158.95153.6506,942
August 14, 2026150.23155.1155.1155.53149.17426,255
August 13, 2026153.15151.42151.42154.99150.92444,781
August 12, 2026148.21152.01152.01152.7147.33416,320
August 11, 2026151.88148.29148.29151.88147.37306,243
August 10, 2026149.31150150151.6147.4545,739
August 07, 2026146.18145.87145.87147.32144.44321,055
August 06, 2026145.01146.18146.18148139.95837,603
August 05, 2026137.49137.32137.32138.08135.39428,283
August 04, 2026133.02135.81135.81138.05132.26634,671
August 03, 2026135.78132.28132.28135.98131.68450,476
July 31, 2026138.36136.64136.64138.37131.69548,760
July 30, 2026131.77138.64138.64138.95130.63545,519
July 29, 2026136.9133133137.43132.72560,642
July 28, 2026136.69136.84136.84137133.2282,382
July 27, 2026136.11135.56135.56139.92135.43416,659
July 23, 2026133.79135.43135.43137.32132605,773
July 22, 2026139.45135.44135.44139.45134.42710,437
July 21, 2026133.34138.31138.31139.72131.05578,907
July 20, 2026141.79134.27134.27143.29133.64762,541
July 17, 2026131.37140.91140.91141.08131.37519,072
July 16, 2026135.21132.02132.02136.56131.35601,998
July 15, 2026128135.46135.46139.22126.97836,083
July 14, 2026131.89131.27131.27131.95128.68564,974
July 13, 2026130.05129.89129.89131.36125.32541,006
July 10, 2026137.12131.42131.42137.12130.64937,177
July 09, 2026139.26137.64137.64141.1136.991.17M
July 08, 2026139.5140.07140.07140.95136.08914,983
July 07, 2026132.59140.85140.85141.08130.691.37M
July 06, 2026131.25131.5131.5132.79128.15639,781
July 02, 2026125.89131.62131.62131.87125.24704,758
July 01, 2026122.96125.17125.17126.04122.48496,518
June 30, 2026122.04122.58122.58124.72119.57556,980
June 29, 2026121.34121.63121.63126.59118.27740,175
June 26, 2026122121.88121.88123.43118.312.58M
June 25, 2026122.31122.63122.63126.25121.481.04M
June 24, 2026119.38122.15122.15124.8118.811.12M
June 23, 2026114.66118.96118.96119.85114.56661,241
June 22, 2026113.24115.03115.03116.57113.241.19M
June 18, 2026112.88112.86112.86114.49111.171.52M
June 17, 2026110.84111.44111.44113.47110.11685,664
June 16, 2026112.83110.64110.64113.66108.53338,750
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