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Protagonist Therapeutics, Inc. (PTGX)
NASDAQ: PTGX · Real-Time Price · USD
144.88
+1.15 (0.80%)
Oct 12, 2026, 4:00 PM EDT - Market closed

Protagonist Therapeutics Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Oct 12, 2026145.83152.19143.69144.88144.880.80%898,514
Oct 9, 2026139.91146.30138.95143.73143.732.73%760,510
Oct 8, 2026139.57142.18137.99139.91139.91-0.72%999,806
Oct 7, 2026137.34144.10137.25140.92140.921.61%927,267
Oct 6, 2026140.34141.00136.09138.69138.69-1.38%632,753
Oct 5, 2026139.96142.51138.08140.63140.630.41%1,273,819
Oct 2, 2026140.99141.71138.37140.06140.060.63%760,303
Oct 1, 2026139.23143.68138.37139.19139.19-1.21%886,245
Sep 30, 2026141.60143.74140.44140.89140.89-0.06%787,658
Sep 29, 2026143.45144.09138.88140.97140.97-1.03%508,013
Sep 28, 2026142.21143.69140.24142.44142.440.41%925,462
Sep 25, 2026141.81143.45138.23141.86141.863.29%809,292
Sep 24, 2026138.76140.80134.10137.34137.34-0.98%989,225
Sep 23, 2026144.27145.28137.88138.70138.70-4.39%513,226
Sep 22, 2026144.64147.71144.50145.07145.070.06%806,176
Sep 21, 2026143.22145.37141.09144.98144.981.38%822,198
Sep 18, 2026143.09144.58140.44143.00143.00-0.49%1,837,204
Sep 17, 2026144.39146.50142.31143.70143.700.60%558,901
Sep 16, 2026144.19146.19140.88142.84142.84-0.39%507,311
Sep 15, 2026147.48147.99142.00143.40143.40-2.96%637,522
Sep 14, 2026150.23151.24146.83147.78147.78-0.27%608,017
Sep 11, 2026147.18150.48145.82148.18148.182.08%478,038
Sep 10, 2026143.29146.51142.00145.16145.160.05%543,129
Sep 9, 2026146.05151.19144.46145.09145.09-0.58%530,534
Sep 8, 2026143.61147.29142.00145.94145.940.15%700,126
Sep 4, 2026146.47147.99144.01145.72145.72-2.07%501,305
Sep 3, 2026146.68149.49144.00148.80148.801.86%354,191
Sep 2, 2026148.00149.42144.61146.08146.08-0.28%561,612
Sep 1, 2026147.75150.34144.73146.49146.49-0.85%534,144
Aug 31, 2026143.26149.30141.95147.75147.752.37%567,395
Aug 28, 2026147.73147.95142.43144.33144.33-3.46%501,247
Aug 27, 2026150.35151.68147.11149.50149.50-1.32%381,590
Aug 26, 2026150.36152.07147.69151.50151.500.60%335,462
Aug 25, 2026155.84157.98150.09150.59150.59-2.67%664,526
Aug 24, 2026154.32158.08149.94154.72154.720.26%483,342
Aug 21, 2026152.10154.95150.82154.32154.322.41%402,542
Aug 20, 2026152.45155.25148.28150.69150.69-2.74%518,560
Aug 19, 2026160.81160.81154.22154.94154.94-1.53%786,052
Aug 18, 2026157.96160.00156.81157.34157.34-0.81%471,648
Aug 17, 2026155.11158.95153.60158.62158.622.27%506,960
Aug 14, 2026150.23155.53149.17155.10155.102.43%426,260
Aug 13, 2026153.15154.99150.92151.42151.42-0.39%444,785
Aug 12, 2026148.21152.70147.33152.01152.012.51%417,204
Aug 11, 2026151.88151.88147.37148.29148.29-1.14%306,573
Aug 10, 2026149.31151.60147.40150.00150.002.83%545,973
Aug 7, 2026146.18147.32144.44145.87145.87-0.21%321,084
Aug 6, 2026145.01148.00139.95146.18146.186.45%837,630
Aug 5, 2026137.49138.08135.39137.32137.321.11%430,528
Aug 4, 2026133.02138.05132.26135.81135.812.67%634,672
Aug 3, 2026135.78135.98131.68132.28132.28-3.19%451,166