NASDAQ:PTGX | Historical Stock Price | Protagonist Therapeutics, Inc

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
2016-08-11 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$5.13$10.24$20.45$40.84$81.56$162.862016-08-112026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2022

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2022-12-30$10.91$10.91634,800
2022-12-29$11.17$11.17862,900
2022-12-28$10.33$10.33445,500
2022-12-27$10.10$10.10431,900
2022-12-23$10.09$10.09697,400
2022-12-22$9.81$9.81665,900
2022-12-21$9.77$9.772,023,600
2022-12-20$9.30$9.30680,300
2022-12-19$8.96$8.96812,400
2022-12-16$9.70$9.702,956,300
2022-12-15$9.53$9.531,098,600
2022-12-14$9.84$9.841,327,000
2022-12-13$8.86$8.861,614,700
2022-12-12$7.82$7.821,884,400
2022-12-09$7.57$7.57972,900
2022-12-08$7.78$7.781,329,100
2022-12-07$7.65$7.65818,000
2022-12-06$7.68$7.68525,500
2022-12-05$7.80$7.80645,000
2022-12-02$8.07$8.07476,000
2022-12-01$7.80$7.80508,100
2022-11-30$7.91$7.91893,900
2022-11-29$7.51$7.51596,700
2022-11-28$7.36$7.36603,800
2022-11-25$7.60$7.60266,000
2022-11-23$7.60$7.60356,000
2022-11-22$7.84$7.84464,000
2022-11-21$8.04$8.04784,700
2022-11-18$8.08$8.08493,800
2022-11-17$7.99$7.99761,500
2022-11-16$8.01$8.01597,300
2022-11-15$8.04$8.04745,700
2022-11-14$8.31$8.31576,500
2022-11-11$8.48$8.48507,600
2022-11-10$8.53$8.531,472,700
2022-11-09$7.71$7.71957,900
2022-11-08$7.74$7.74583,000
2022-11-07$7.75$7.75756,900
2022-11-04$7.88$7.88760,700
2022-11-03$7.88$7.88522,300
2022-11-02$8.09$8.09513,600
2022-11-01$8.46$8.46529,700
2022-10-31$8.10$8.10544,100
2022-10-28$8.58$8.58652,400
2022-10-27$8.22$8.22486,500
2022-10-26$8.39$8.391,035,600
2022-10-25$8.35$8.35800,200
2022-10-24$7.96$7.96409,700
2022-10-21$8.25$8.25709,100
2022-10-20$7.94$7.94408,600
2022-10-19$8.00$8.001,059,500
2022-10-18$8.36$8.36372,100
2022-10-17$8.26$8.26675,200
2022-10-14$7.99$7.99593,400
2022-10-13$8.34$8.34500,600
2022-10-12$8.17$8.17547,000
2022-10-11$8.16$8.16631,800
2022-10-10$8.08$8.08501,300
2022-10-07$8.31$8.31889,700
2022-10-06$8.65$8.65587,600
2022-10-05$8.62$8.62610,800
2022-10-04$8.83$8.831,061,800
2022-10-03$8.58$8.58891,300
2022-09-30$8.43$8.43660,200
2022-09-29$8.25$8.25939,400
2022-09-28$8.81$8.81945,800
2022-09-27$8.48$8.48828,400
2022-09-26$8.20$8.20714,300
2022-09-23$8.32$8.32908,000
2022-09-22$8.36$8.36513,000
2022-09-21$8.46$8.461,150,400
2022-09-20$8.38$8.38623,700
2022-09-19$8.02$8.02700,200
2022-09-16$8.36$8.364,922,200
2022-09-15$8.27$8.27831,300
2022-09-14$8.23$8.231,085,300
2022-09-13$8.48$8.481,271,200
2022-09-12$9.00$9.00827,200
2022-09-09$8.84$8.84568,000
2022-09-08$9.12$9.12478,300
2022-09-07$8.82$8.82775,300
2022-09-06$8.39$8.39618,500
2022-09-02$8.85$8.85720,200
2022-09-01$9.18$9.18696,600
2022-08-31$8.72$8.72718,900
2022-08-30$8.71$8.71674,700
2022-08-29$9.13$9.13595,200
2022-08-26$9.33$9.331,176,500
2022-08-25$10.04$10.04495,700
2022-08-24$9.97$9.97630,400
2022-08-23$9.41$9.41676,400
2022-08-22$9.05$9.05688,900
2022-08-19$9.56$9.56733,000
2022-08-18$10.03$10.03601,500
2022-08-17$10.14$10.141,014,500
2022-08-16$10.83$10.83790,600
2022-08-15$11.33$11.33566,000
2022-08-12$11.40$11.40957,500
2022-08-11$10.40$10.401,269,600
2022-08-10$11.45$11.451,285,700
2022-08-09$11.03$11.03932,800
2022-08-08$11.66$11.661,070,200
2022-08-05$11.46$11.46831,000
2022-08-04$11.71$11.711,420,500
2022-08-03$11.21$11.211,543,400
2022-08-02$10.63$10.63924,700
2022-08-01$9.85$9.851,030,100
2022-07-29$9.95$9.95509,900
2022-07-28$10.25$10.25526,800
2022-07-27$10.13$10.13737,700
2022-07-26$9.74$9.74594,600
2022-07-25$9.80$9.801,538,200
2022-07-22$9.90$9.90945,300
2022-07-21$10.64$10.641,323,700
2022-07-20$10.15$10.151,112,300
2022-07-19$10.25$10.25942,600
2022-07-18$9.56$9.562,050,100
2022-07-15$9.46$9.46536,700
2022-07-14$9.12$9.12569,400
2022-07-13$9.47$9.47639,100
2022-07-12$9.20$9.20766,100
2022-07-11$9.00$9.001,517,400
2022-07-08$9.62$9.62948,800
2022-07-07$8.56$8.561,205,300
2022-07-06$8.20$8.20816,000
2022-07-05$8.46$8.461,634,500
2022-07-01$7.86$7.861,115,600
2022-06-30$7.91$7.91952,500
2022-06-29$8.07$8.072,170,600
2022-06-28$8.45$8.45818,400
2022-06-27$9.12$9.12716,300
2022-06-24$9.08$9.082,056,800
2022-06-23$9.30$9.301,108,200
2022-06-22$8.28$8.28929,900
2022-06-21$8.19$8.191,107,900
2022-06-17$7.86$7.865,310,500
2022-06-16$7.40$7.401,190,300
2022-06-15$7.48$7.48919,000
2022-06-14$7.34$7.341,284,000
2022-06-13$7.06$7.061,373,700
2022-06-10$7.33$7.331,386,900
2022-06-09$7.89$7.891,472,500
2022-06-08$8.98$8.98651,100
2022-06-07$9.21$9.21816,200
2022-06-06$8.88$8.88696,600
2022-06-03$9.20$9.20742,300
2022-06-02$8.99$8.99592,000
2022-06-01$8.53$8.53913,300
2022-05-31$8.76$8.761,194,800
2022-05-27$8.90$8.90713,800
2022-05-26$8.31$8.31861,700
2022-05-25$7.86$7.86951,400
2022-05-24$7.70$7.70921,500
2022-05-23$7.83$7.831,138,200
2022-05-20$7.92$7.921,171,600
2022-05-19$7.77$7.771,220,000
2022-05-18$7.85$7.851,652,500
2022-05-17$8.61$8.611,748,700
2022-05-16$8.59$8.591,645,600
2022-05-13$8.81$8.812,604,700
2022-05-12$8.34$8.341,426,200
2022-05-11$8.00$8.002,516,500
2022-05-10$9.16$9.16921,300
2022-05-09$8.82$8.821,230,900
2022-05-06$9.10$9.101,017,400
2022-05-05$9.80$9.801,334,300
2022-05-04$9.82$9.82804,000
2022-05-03$9.83$9.831,339,400
2022-05-02$9.68$9.681,577,300
2022-04-29$9.09$9.092,127,700
2022-04-28$9.08$9.081,942,000
2022-04-27$9.39$9.393,206,600
2022-04-26$9.41$9.418,015,600
2022-04-25$18.80$18.801,463,700
2022-04-22$18.91$18.91844,400
2022-04-21$19.18$19.18789,100
2022-04-20$19.76$19.76547,000
2022-04-19$19.35$19.35948,400
2022-04-18$19.19$19.191,201,500
2022-04-14$19.95$19.954,877,100
2022-04-13$25.52$25.521,153,900
2022-04-12$23.56$23.56576,800
2022-04-11$24.06$24.06622,500
2022-04-08$25.17$25.17606,500
2022-04-07$25.42$25.42441,900
2022-04-06$24.50$24.50544,800
2022-04-05$24.24$24.241,219,400
2022-04-04$24.91$24.91583,500
2022-04-01$24.18$24.18840,600
2022-03-31$23.68$23.68315,800
2022-03-30$23.92$23.92461,200
2022-03-29$25.10$25.10776,400
2022-03-28$24.82$24.82472,500
2022-03-25$24.96$24.96465,900
2022-03-24$25.17$25.171,241,500
2022-03-23$26.11$26.11680,500
2022-03-22$26.54$26.54514,100
2022-03-21$25.26$25.26585,300
2022-03-18$27.18$27.181,285,600
2022-03-17$27.26$27.26458,400
2022-03-16$26.49$26.49413,200
2022-03-15$25.82$25.82289,900
2022-03-14$24.89$24.89707,100
2022-03-11$25.51$25.51361,000
2022-03-10$26.24$26.24508,600
2022-03-09$25.41$25.41749,900
2022-03-08$24.01$24.01993,300
2022-03-07$23.85$23.85590,500
2022-03-04$24.31$24.31396,100
2022-03-03$26.25$26.25922,800
2022-03-02$26.58$26.58755,800
2022-03-01$26.25$26.25829,400
2022-02-28$24.28$24.28362,200
2022-02-25$24.49$24.49539,500
2022-02-24$24.25$24.252,113,100
2022-02-23$23.34$23.34575,600
2022-02-22$24.40$24.40662,700
2022-02-18$24.85$24.85468,300
2022-02-17$25.47$25.47670,400
2022-02-16$26.70$26.70500,000
2022-02-15$28.73$28.732,838,400
2022-02-14$27.36$27.361,346,300
2022-02-11$27.85$27.85597,800
2022-02-10$27.45$27.45841,800
2022-02-09$28.41$28.41695,800
2022-02-08$27.92$27.92503,900
2022-02-07$28.00$28.00447,100
2022-02-04$28.24$28.24598,100
2022-02-03$28.95$28.95346,100
2022-02-02$29.41$29.41622,400
2022-02-01$30.25$30.25368,900
2022-01-31$29.29$29.29538,000
2022-01-28$28.15$28.15704,900
2022-01-27$26.38$26.38603,800
2022-01-26$28.42$28.42635,000
2022-01-25$28.80$28.80884,700
2022-01-24$28.97$28.971,510,500
2022-01-21$29.33$29.331,086,300
2022-01-20$31.81$31.81673,100
2022-01-19$34.27$34.27689,300
2022-01-18$34.59$34.59854,800
2022-01-14$35.96$35.961,008,500
2022-01-13$34.75$34.75535,200
2022-01-12$35.39$35.39404,800
2022-01-11$34.82$34.82369,300
2022-01-10$34.53$34.53739,600
2022-01-07$34.86$34.86620,800
2022-01-06$34.54$34.54538,200
2022-01-05$34.60$34.60587,300
2022-01-04$36.08$36.08946,400
2022-01-03$35.32$35.32717,600