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 — 2019

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2019-12-31$15.83$15.83144,500
2019-12-30$15.77$15.77206,200
2019-12-27$16.00$16.00223,400
2019-12-26$16.71$16.71237,100
2019-12-24$16.21$16.21295,500
2019-12-23$17.01$17.01567,700
2019-12-20$15.85$15.851,909,300
2019-12-19$12.83$12.83115,700
2019-12-18$12.80$12.80119,000
2019-12-17$12.88$12.88185,100
2019-12-16$12.82$12.82394,700
2019-12-13$12.85$12.85137,800
2019-12-12$12.96$12.96170,600
2019-12-11$12.50$12.50245,100
2019-12-10$12.46$12.46232,800
2019-12-09$12.78$12.78171,300
2019-12-06$12.85$12.85186,000
2019-12-05$12.41$12.41183,000
2019-12-04$12.33$12.33189,400
2019-12-03$12.43$12.43212,700
2019-12-02$12.30$12.30267,400
2019-11-29$12.82$12.82135,000
2019-11-27$12.40$12.40339,300
2019-11-26$12.05$12.05219,900
2019-11-25$11.50$11.50352,300
2019-11-22$10.72$10.72273,100
2019-11-21$11.14$11.14274,400
2019-11-20$10.75$10.75597,600
2019-11-19$10.80$10.80297,800
2019-11-18$10.24$10.24176,800
2019-11-15$10.47$10.47228,700
2019-11-14$10.71$10.71217,400
2019-11-13$10.28$10.28192,200
2019-11-12$9.43$9.43173,900
2019-11-11$9.14$9.14188,100
2019-11-08$9.07$9.07224,800
2019-11-07$9.07$9.07153,200
2019-11-06$9.06$9.06150,900
2019-11-05$9.46$9.4691,600
2019-11-04$9.35$9.35140,500
2019-11-01$9.10$9.10200,600
2019-10-31$9.10$9.10153,300
2019-10-30$8.68$8.6883,800
2019-10-29$8.85$8.8581,200
2019-10-28$8.91$8.9196,700
2019-10-25$8.59$8.5978,200
2019-10-24$8.56$8.56105,500
2019-10-23$8.66$8.66210,200
2019-10-22$9.18$9.18286,000
2019-10-21$8.34$8.34144,800
2019-10-18$7.79$7.79111,100
2019-10-17$8.02$8.02150,100
2019-10-16$8.17$8.17123,600
2019-10-15$8.22$8.22160,200
2019-10-14$7.80$7.8092,200
2019-10-11$7.76$7.76158,400
2019-10-10$7.48$7.48122,200
2019-10-09$7.52$7.52147,200
2019-10-08$7.57$7.57110,300
2019-10-07$7.73$7.7376,900
2019-10-04$7.79$7.79158,600
2019-10-03$7.92$7.92128,900
2019-10-02$7.76$7.7699,700
2019-10-01$7.76$7.76149,700
2019-09-30$7.84$7.84127,200
2019-09-27$7.80$7.80179,300
2019-09-26$7.59$7.59162,400
2019-09-25$7.86$7.86216,400
2019-09-24$8.11$8.11617,900
2019-09-23$8.29$8.29146,100
2019-09-20$8.37$8.37845,000
2019-09-19$8.51$8.5190,200
2019-09-18$8.56$8.56118,200
2019-09-17$8.70$8.70199,500
2019-09-16$8.80$8.80206,800
2019-09-13$8.42$8.42167,400
2019-09-12$8.72$8.72148,100
2019-09-11$9.23$9.23179,400
2019-09-10$8.85$8.85146,800
2019-09-09$8.59$8.5993,200
2019-09-06$8.87$8.87271,200
2019-09-05$8.68$8.68134,100
2019-09-04$8.20$8.20164,000
2019-09-03$8.00$8.00202,700
2019-08-30$8.41$8.41142,000
2019-08-29$8.89$8.89272,700
2019-08-28$8.91$8.91390,500
2019-08-27$8.93$8.93863,100
2019-08-26$7.06$7.06311,500
2019-08-23$6.89$6.89184,100
2019-08-22$7.28$7.28172,600
2019-08-21$7.54$7.54104,100
2019-08-20$7.69$7.69102,500
2019-08-19$7.89$7.89105,800
2019-08-16$7.75$7.75136,600
2019-08-15$7.60$7.60139,200
2019-08-14$8.15$8.15152,400
2019-08-13$8.54$8.54128,200
2019-08-12$8.36$8.36176,500
2019-08-09$8.60$8.6099,800
2019-08-08$8.94$8.94145,400
2019-08-07$9.00$9.00232,200
2019-08-06$9.22$9.22170,700
2019-08-05$8.79$8.79281,000
2019-08-02$9.03$9.03122,400
2019-08-01$9.44$9.44191,500
2019-07-31$9.36$9.36244,500
2019-07-30$9.83$9.83107,500
2019-07-29$9.74$9.74107,400
2019-07-26$9.93$9.93165,300
2019-07-25$9.72$9.72210,900
2019-07-24$10.01$10.01122,900
2019-07-23$9.89$9.89127,100
2019-07-22$9.87$9.8794,300
2019-07-19$9.86$9.86183,900
2019-07-18$10.00$10.00162,200
2019-07-17$9.77$9.77172,100
2019-07-16$9.68$9.68136,000
2019-07-15$9.68$9.68139,500
2019-07-12$9.68$9.68159,700
2019-07-11$9.79$9.79190,100
2019-07-10$9.95$9.95158,400
2019-07-09$10.14$10.14102,500
2019-07-08$9.86$9.86172,800
2019-07-05$10.13$10.13134,800
2019-07-03$10.45$10.4581,700
2019-07-02$10.02$10.02197,500
2019-07-01$10.27$10.27172,500
2019-06-28$10.57$10.57483,400
2019-06-27$10.09$10.09167,100
2019-06-26$9.71$9.71153,000
2019-06-25$9.87$9.87168,700
2019-06-24$9.58$9.58285,300
2019-06-21$9.74$9.74633,300
2019-06-20$9.94$9.94213,900
2019-06-19$10.00$10.00199,700
2019-06-18$10.01$10.01303,200
2019-06-17$9.73$9.73487,200
2019-06-14$9.40$9.40308,200
2019-06-13$9.96$9.96654,700
2019-06-12$9.75$9.75349,600
2019-06-11$9.60$9.60473,000
2019-06-10$9.24$9.24579,400
2019-06-07$9.09$9.09491,800
2019-06-06$8.85$8.85165,600
2019-06-05$9.31$9.31132,300
2019-06-04$9.75$9.75172,500
2019-06-03$9.50$9.50168,600
2019-05-31$9.32$9.32228,900
2019-05-30$9.51$9.51264,600
2019-05-29$9.46$9.46385,000
2019-05-28$9.50$9.50259,900
2019-05-24$9.49$9.491,126,300
2019-05-23$8.94$8.94194,600
2019-05-22$9.23$9.23132,800
2019-05-21$9.52$9.52245,500
2019-05-20$9.28$9.28202,800
2019-05-17$9.53$9.53260,900
2019-05-16$9.65$9.65186,400
2019-05-15$9.74$9.74215,600
2019-05-14$9.79$9.79200,100
2019-05-13$9.59$9.59282,500
2019-05-10$10.36$10.36247,300
2019-05-09$10.48$10.48218,800
2019-05-08$10.84$10.84809,000
2019-05-07$10.34$10.34241,300
2019-05-06$10.56$10.56356,400
2019-05-03$10.56$10.56283,700
2019-05-02$10.40$10.40332,500
2019-05-01$10.11$10.11205,400
2019-04-30$10.40$10.40261,300
2019-04-29$10.65$10.65193,500
2019-04-26$10.88$10.88125,600
2019-04-25$10.84$10.84333,700
2019-04-24$10.94$10.94101,000
2019-04-23$11.18$11.18262,900
2019-04-22$10.80$10.80212,300
2019-04-18$10.70$10.70186,400
2019-04-17$10.76$10.76292,000
2019-04-16$10.93$10.93172,700
2019-04-15$10.91$10.91175,300
2019-04-12$11.16$11.16218,500
2019-04-11$11.20$11.20293,800
2019-04-10$11.44$11.44878,300
2019-04-09$11.54$11.54263,800
2019-04-08$12.30$12.30135,300
2019-04-05$12.49$12.49121,500
2019-04-04$12.14$12.14104,900
2019-04-03$12.22$12.22145,700
2019-04-02$12.03$12.03179,400
2019-04-01$11.65$11.65403,900
2019-03-29$12.13$12.13229,200
2019-03-28$11.76$11.76255,000
2019-03-27$11.73$11.73343,300
2019-03-26$12.09$12.09141,500
2019-03-25$11.99$11.99212,600
2019-03-22$12.30$12.30375,500
2019-03-21$13.30$13.30223,700
2019-03-20$13.64$13.64158,600
2019-03-19$14.04$14.04215,900
2019-03-18$14.49$14.49332,900
2019-03-15$14.35$14.35760,400
2019-03-14$13.97$13.97250,100
2019-03-13$14.04$14.04605,500
2019-03-12$13.56$13.56510,100
2019-03-11$13.11$13.11298,400
2019-03-08$12.80$12.80201,100
2019-03-07$13.10$13.10211,500
2019-03-06$13.23$13.23289,800
2019-03-05$13.96$13.96317,900
2019-03-04$14.27$14.27445,600
2019-03-01$13.77$13.77227,200
2019-02-28$13.40$13.40327,200
2019-02-27$13.53$13.53311,400
2019-02-26$13.48$13.48335,300
2019-02-25$13.49$13.49371,000
2019-02-22$13.41$13.41855,900
2019-02-21$13.34$13.34356,600
2019-02-20$13.42$13.42520,000
2019-02-19$13.30$13.30427,700
2019-02-15$13.15$13.15613,500
2019-02-14$12.75$12.75307,100
2019-02-13$12.75$12.75481,200
2019-02-12$12.79$12.79544,700
2019-02-11$12.28$12.28301,100
2019-02-08$12.31$12.31406,200
2019-02-07$12.13$12.13270,100
2019-02-06$12.23$12.23715,500
2019-02-05$11.88$11.88513,100
2019-02-04$11.82$11.82254,900
2019-02-01$11.72$11.72271,800
2019-01-31$11.75$11.75281,800
2019-01-30$11.75$11.75314,700
2019-01-29$11.45$11.45185,100
2019-01-28$11.39$11.39230,800
2019-01-25$11.78$11.78380,400
2019-01-24$11.42$11.42165,300
2019-01-23$11.39$11.39214,700
2019-01-22$11.59$11.59383,500
2019-01-18$11.97$11.97424,200
2019-01-17$11.93$11.93298,000
2019-01-16$11.96$11.96218,000
2019-01-15$12.04$12.04273,200
2019-01-14$11.66$11.66419,700
2019-01-11$11.73$11.73406,900
2019-01-10$11.25$11.25698,500
2019-01-09$11.31$11.31414,700
2019-01-08$11.40$11.40363,300
2019-01-07$11.34$11.341,321,000
2019-01-04$10.89$10.89631,900
2019-01-03$10.32$10.32615,100
2019-01-02$10.50$10.50456,100