NASDAQ:PRTA | Historical Stock Price | PROTHENA CORP PUBLIC LTD CO

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
2012-12-18 to 2026-09-04
Data captured

Stock Price Chart

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

$4.47$7.97$14.21$25.36$45.25$80.732012-12-212026-08-27

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

View year

Historical Stock Price — 2015

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2015-12-31$68.11$68.11217,900
2015-12-30$69.78$69.78144,800
2015-12-29$71.24$71.24250,900
2015-12-28$68.83$68.83217,000
2015-12-24$69.99$69.99127,100
2015-12-23$70.51$70.51199,800
2015-12-22$70.17$70.17213,500
2015-12-21$71.10$71.10247,600
2015-12-18$71.03$71.031,017,300
2015-12-17$67.43$67.43532,100
2015-12-16$71.83$71.83307,200
2015-12-15$68.46$68.46283,200
2015-12-14$67.36$67.36211,200
2015-12-11$66.62$66.62267,400
2015-12-10$68.50$68.50262,500
2015-12-09$65.40$65.40378,400
2015-12-08$68.25$68.25286,900
2015-12-07$63.55$63.55468,700
2015-12-04$65.68$65.68609,800
2015-12-03$65.34$65.34586,100
2015-12-02$69.16$69.16318,300
2015-12-01$70.17$70.17424,900
2015-11-30$70.54$70.54431,400
2015-11-27$75.31$75.31145,900
2015-11-25$73.19$73.19391,200
2015-11-24$73.20$73.20379,600
2015-11-23$70.04$70.04258,000
2015-11-20$70.62$70.62242,500
2015-11-19$70.49$70.49471,200
2015-11-18$69.03$69.03375,500
2015-11-17$65.10$65.10325,600
2015-11-16$67.29$67.29407,800
2015-11-13$66.26$66.26612,700
2015-11-12$59.57$59.57254,600
2015-11-11$59.80$59.80221,900
2015-11-10$58.93$58.93366,200
2015-11-09$61.12$61.12202,300
2015-11-06$61.58$61.58255,400
2015-11-05$59.27$59.27171,300
2015-11-04$59.53$59.53306,900
2015-11-03$57.14$57.14388,000
2015-11-02$55.05$55.05350,400
2015-10-30$51.51$51.51216,800
2015-10-29$52.45$52.45245,800
2015-10-28$54.31$54.31271,700
2015-10-27$51.95$51.95213,700
2015-10-26$50.11$50.11339,300
2015-10-23$49.32$49.32265,500
2015-10-22$47.10$47.10217,200
2015-10-21$47.23$47.23223,600
2015-10-20$46.84$46.84448,500
2015-10-19$49.02$49.02230,700
2015-10-16$48.07$48.07388,700
2015-10-15$48.89$48.89331,400
2015-10-14$44.11$44.11217,200
2015-10-13$43.31$43.31194,200
2015-10-12$45.22$45.22197,600
2015-10-09$44.69$44.69252,300
2015-10-08$43.40$43.40314,000
2015-10-07$44.96$44.96329,500
2015-10-06$44.46$44.46247,700
2015-10-05$47.00$47.00395,200
2015-10-02$49.54$49.54370,700
2015-10-01$45.39$45.39454,200
2015-09-30$45.34$45.34523,200
2015-09-29$43.43$43.43651,600
2015-09-28$44.32$44.32607,800
2015-09-25$51.12$51.12437,600
2015-09-24$56.96$56.96345,100
2015-09-23$56.31$56.31215,100
2015-09-22$56.31$56.31406,100
2015-09-21$58.95$58.95444,400
2015-09-18$64.48$64.48607,500
2015-09-17$63.04$63.04296,900
2015-09-16$60.37$60.37223,400
2015-09-15$59.92$59.92132,100
2015-09-14$59.24$59.24177,200
2015-09-11$59.97$59.97265,100
2015-09-10$57.63$57.63285,800
2015-09-09$54.79$54.79266,800
2015-09-08$56.41$56.41253,700
2015-09-04$53.63$53.63236,400
2015-09-03$52.70$52.70280,400
2015-09-02$56.39$56.39365,600
2015-09-01$54.38$54.38439,200
2015-08-31$57.53$57.53309,800
2015-08-28$59.52$59.52249,600
2015-08-27$59.61$59.61546,600
2015-08-26$56.82$56.82427,600
2015-08-25$52.59$52.59513,500
2015-08-24$49.18$49.18610,000
2015-08-21$55.54$55.54453,900
2015-08-20$55.50$55.50482,900
2015-08-19$58.52$58.52281,500
2015-08-18$60.48$60.48347,800
2015-08-17$62.05$62.05301,000
2015-08-14$60.91$60.91275,800
2015-08-13$61.14$61.14219,600
2015-08-12$62.68$62.68418,800
2015-08-11$63.52$63.52379,100
2015-08-10$62.39$62.39534,900
2015-08-07$64.92$64.92360,000
2015-08-06$64.69$64.69501,100
2015-08-05$66.89$66.891,340,800
2015-08-04$68.33$68.33394,600
2015-08-03$67.64$67.64341,000
2015-07-31$65.97$65.97256,900
2015-07-30$66.70$66.70266,600
2015-07-29$66.85$66.85358,600
2015-07-28$68.70$68.70535,900
2015-07-27$62.77$62.77423,800
2015-07-24$64.10$64.10345,100
2015-07-23$66.80$66.80431,500
2015-07-22$67.30$67.30644,800
2015-07-21$61.08$61.08641,300
2015-07-20$62.83$62.83573,100
2015-07-17$59.72$59.72369,700
2015-07-16$58.52$58.52564,200
2015-07-15$55.46$55.46663,600
2015-07-14$55.42$55.42619,700
2015-07-13$53.16$53.16445,700
2015-07-10$51.70$51.70297,800
2015-07-09$50.92$50.92221,200
2015-07-08$49.38$49.38286,800
2015-07-07$51.06$51.06247,300
2015-07-06$51.59$51.59325,000
2015-07-02$50.46$50.46186,200
2015-07-01$50.77$50.77663,200
2015-06-30$52.67$52.67395,000
2015-06-29$49.60$49.60273,400
2015-06-26$51.28$51.281,255,200
2015-06-25$52.76$52.76445,700
2015-06-24$51.53$51.53444,900
2015-06-23$53.79$53.79561,900
2015-06-22$54.95$54.95662,200
2015-06-19$51.61$51.61814,700
2015-06-18$50.74$50.74556,400
2015-06-17$51.04$51.041,074,300
2015-06-16$46.65$46.65353,500
2015-06-15$47.35$47.35448,500
2015-06-12$45.15$45.15220,000
2015-06-11$46.35$46.35389,300
2015-06-10$44.47$44.47321,000
2015-06-09$45.14$45.14376,100
2015-06-08$45.18$45.18498,900
2015-06-05$46.62$46.62513,200
2015-06-04$44.95$44.95686,200
2015-06-03$44.94$44.94759,000
2015-06-02$42.69$42.69722,200
2015-06-01$39.95$39.95630,600
2015-05-29$39.44$39.441,167,500
2015-05-28$34.50$34.50267,100
2015-05-27$33.79$33.79227,200
2015-05-26$33.91$33.91303,200
2015-05-22$34.04$34.04244,900
2015-05-21$33.51$33.51201,300
2015-05-20$33.81$33.81245,200
2015-05-19$32.61$32.61273,600
2015-05-18$32.00$32.00235,400
2015-05-15$30.99$30.99166,500
2015-05-14$31.84$31.84206,300
2015-05-13$31.44$31.44227,700
2015-05-12$31.21$31.21260,100
2015-05-11$31.48$31.48200,200
2015-05-08$31.65$31.65317,400
2015-05-07$31.12$31.12430,800
2015-05-06$31.23$31.23366,600
2015-05-05$31.59$31.59416,600
2015-05-04$34.13$34.13394,900
2015-05-01$33.65$33.65434,800
2015-04-30$32.41$32.41965,100
2015-04-29$35.07$35.07333,300
2015-04-28$35.05$35.05628,900
2015-04-27$36.37$36.37584,300
2015-04-24$37.35$37.35255,800
2015-04-23$37.83$37.83219,100
2015-04-22$36.96$36.96251,500
2015-04-21$36.60$36.60259,000
2015-04-20$35.78$35.78261,400
2015-04-17$35.99$35.99440,300
2015-04-16$37.54$37.54312,000
2015-04-15$36.57$36.57209,700
2015-04-14$36.83$36.83401,900
2015-04-13$36.42$36.42363,400
2015-04-10$36.91$36.91380,800
2015-04-09$36.39$36.391,145,500
2015-04-08$35.16$35.162,289,400
2015-04-07$37.56$37.56336,800
2015-04-06$38.82$38.82319,700
2015-04-02$38.28$38.28380,000
2015-04-01$39.06$39.06502,200
2015-03-31$38.14$38.14469,200
2015-03-30$39.37$39.37472,900
2015-03-27$37.84$37.84384,800
2015-03-26$36.56$36.56947,800
2015-03-25$36.83$36.831,191,000
2015-03-24$39.34$39.342,111,000
2015-03-23$37.73$37.731,450,600
2015-03-20$38.66$38.666,630,200
2015-03-19$29.23$29.23573,100
2015-03-18$28.48$28.48202,200
2015-03-17$29.32$29.32251,700
2015-03-16$29.15$29.15221,700
2015-03-13$28.67$28.67220,000
2015-03-12$28.36$28.36215,500
2015-03-11$27.81$27.81237,500
2015-03-10$27.04$27.04321,600
2015-03-09$26.86$26.86202,300
2015-03-06$26.12$26.12257,800
2015-03-05$26.58$26.58205,200
2015-03-04$26.17$26.17265,900
2015-03-03$25.63$25.63239,200
2015-03-02$26.47$26.47256,200
2015-02-27$26.58$26.58229,600
2015-02-26$27.52$27.52214,700
2015-02-25$26.66$26.66292,100
2015-02-24$26.03$26.03382,200
2015-02-23$28.24$28.24557,900
2015-02-20$26.63$26.63266,800
2015-02-19$27.52$27.52376,200
2015-02-18$24.27$24.27203,300
2015-02-17$23.99$23.99221,700
2015-02-13$22.89$22.89132,500
2015-02-12$22.76$22.76191,100
2015-02-11$21.46$21.46128,000
2015-02-10$21.51$21.51110,900
2015-02-09$21.56$21.56137,600
2015-02-06$21.72$21.72224,000
2015-02-05$21.92$21.92175,100
2015-02-04$20.75$20.75142,600
2015-02-03$21.42$21.42156,400
2015-02-02$21.94$21.94183,900
2015-01-30$22.63$22.63273,700
2015-01-29$22.75$22.75136,000
2015-01-28$22.53$22.53199,100
2015-01-27$23.76$23.76192,800
2015-01-26$22.97$22.97287,000
2015-01-23$21.51$21.51245,600
2015-01-22$20.30$20.30172,800
2015-01-21$19.74$19.74157,800
2015-01-20$20.13$20.13244,400
2015-01-16$20.07$20.07190,400
2015-01-15$19.20$19.20187,200
2015-01-14$20.41$20.4193,300
2015-01-13$19.97$19.97176,400
2015-01-12$20.54$20.54138,300
2015-01-09$21.55$21.55157,200
2015-01-08$21.48$21.48244,000
2015-01-07$20.76$20.76219,900
2015-01-06$19.05$19.05257,000
2015-01-05$19.36$19.36240,100
2015-01-02$20.35$20.35207,600