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 — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$49.40$49.40544,600
2021-12-30$47.72$47.72369,000
2021-12-29$46.83$46.83351,800
2021-12-28$45.70$45.70294,800
2021-12-27$47.43$47.43245,900
2021-12-23$48.39$48.39292,600
2021-12-22$47.08$47.08303,800
2021-12-21$47.03$47.03341,900
2021-12-20$46.41$46.41400,200
2021-12-17$46.99$46.991,730,300
2021-12-16$43.35$43.35380,800
2021-12-15$45.16$45.16586,100
2021-12-14$42.11$42.11437,600
2021-12-13$44.17$44.17516,700
2021-12-10$43.70$43.70499,900
2021-12-09$45.00$45.00477,300
2021-12-08$49.55$49.55259,100
2021-12-07$49.36$49.36491,100
2021-12-06$44.06$44.06566,100
2021-12-03$46.59$46.59420,300
2021-12-02$49.67$49.67347,100
2021-12-01$46.65$46.65437,300
2021-11-30$50.15$50.15500,800
2021-11-29$49.22$49.22547,200
2021-11-26$49.15$49.15461,700
2021-11-24$53.64$53.64356,200
2021-11-23$51.17$51.17582,600
2021-11-22$59.01$59.01332,500
2021-11-19$58.73$58.73351,200
2021-11-18$54.59$54.59307,800
2021-11-17$56.50$56.50371,500
2021-11-16$55.76$55.76234,400
2021-11-15$57.19$57.19223,400
2021-11-12$57.19$57.19176,000
2021-11-11$56.51$56.51203,600
2021-11-10$56.09$56.09210,300
2021-11-09$56.53$56.53220,900
2021-11-08$58.52$58.52240,700
2021-11-05$58.94$58.94274,400
2021-11-04$56.43$56.43273,100
2021-11-03$59.38$59.38318,700
2021-11-02$58.78$58.78254,500
2021-11-01$57.46$57.46283,600
2021-10-29$55.35$55.35278,400
2021-10-28$56.57$56.57288,200
2021-10-27$54.68$54.68499,300
2021-10-26$61.02$61.02127,000
2021-10-25$62.67$62.67154,000
2021-10-22$61.61$61.61176,300
2021-10-21$61.15$61.15279,900
2021-10-20$59.96$59.96375,800
2021-10-19$62.65$62.65365,700
2021-10-18$62.91$62.91548,300
2021-10-15$63.46$63.46321,000
2021-10-14$64.96$64.96214,200
2021-10-13$63.98$63.98370,200
2021-10-12$65.64$65.64477,100
2021-10-11$69.41$69.41173,500
2021-10-08$71.15$71.15224,600
2021-10-07$73.26$73.26245,900
2021-10-06$70.94$70.94208,900
2021-10-05$71.72$71.72201,900
2021-10-04$71.70$71.70369,400
2021-10-01$70.74$70.74468,800
2021-09-30$71.23$71.23327,200
2021-09-29$70.81$70.81186,500
2021-09-28$71.79$71.79455,200
2021-09-27$77.39$77.39285,000
2021-09-24$75.32$75.32227,700
2021-09-23$78.89$78.89226,200
2021-09-22$76.06$76.06267,400
2021-09-21$75.03$75.03317,100
2021-09-20$74.81$74.81285,800
2021-09-17$77.07$77.07795,600
2021-09-16$74.79$74.79253,200
2021-09-15$74.82$74.82338,200
2021-09-14$74.59$74.59350,000
2021-09-13$72.49$72.49434,900
2021-09-10$76.38$76.38520,600
2021-09-09$72.15$72.15358,900
2021-09-08$71.27$71.27233,500
2021-09-07$71.89$71.89462,700
2021-09-03$71.38$71.38249,100
2021-09-02$71.93$71.93257,500
2021-09-01$69.88$69.88340,000
2021-08-31$67.12$67.121,019,400
2021-08-30$69.23$69.23370,700
2021-08-27$68.13$68.13550,200
2021-08-26$67.55$67.55563,100
2021-08-25$65.43$65.43949,700
2021-08-24$63.98$63.98597,200
2021-08-23$62.00$62.00362,200
2021-08-20$59.82$59.82356,500
2021-08-19$59.11$59.11330,500
2021-08-18$58.34$58.34250,400
2021-08-17$60.83$60.83392,100
2021-08-16$56.40$56.40245,500
2021-08-13$58.45$58.45185,100
2021-08-12$58.79$58.79244,300
2021-08-11$58.00$58.00269,700
2021-08-10$57.89$57.89262,700
2021-08-09$57.17$57.17325,700
2021-08-06$57.42$57.42397,600
2021-08-05$55.94$55.94405,100
2021-08-04$54.70$54.70295,600
2021-08-03$54.10$54.10218,600
2021-08-02$52.74$52.74209,200
2021-07-30$50.10$50.10172,700
2021-07-29$49.72$49.72312,000
2021-07-28$52.74$52.74357,400
2021-07-27$48.20$48.20440,500
2021-07-26$51.48$51.48295,300
2021-07-23$51.95$51.95208,800
2021-07-22$51.34$51.34240,000
2021-07-21$51.90$51.90632,100
2021-07-20$49.57$49.57471,600
2021-07-19$50.00$50.00451,100
2021-07-16$50.95$50.95347,900
2021-07-15$51.76$51.76438,100
2021-07-14$53.62$53.62548,900
2021-07-13$52.34$52.34399,300
2021-07-12$54.39$54.39686,600
2021-07-09$59.24$59.241,615,000
2021-07-08$55.22$55.22352,300
2021-07-07$53.26$53.26331,700
2021-07-06$55.71$55.71349,800
2021-07-02$55.47$55.47407,700
2021-07-01$52.78$52.78537,700
2021-06-30$51.41$51.41597,100
2021-06-29$48.51$48.51233,300
2021-06-28$48.73$48.73400,400
2021-06-25$46.86$46.861,580,500
2021-06-24$48.87$48.87696,600
2021-06-23$48.11$48.11352,600
2021-06-22$45.33$45.33707,200
2021-06-21$49.41$49.41474,400
2021-06-18$51.01$51.011,131,800
2021-06-17$48.72$48.721,045,400
2021-06-16$57.65$57.65944,600
2021-06-15$51.97$51.97621,700
2021-06-14$47.65$47.65568,900
2021-06-11$45.09$45.09763,900
2021-06-10$44.52$44.52736,700
2021-06-09$38.94$38.94477,600
2021-06-08$39.42$39.42965,600
2021-06-07$37.23$37.231,628,600
2021-06-04$28.65$28.65486,100
2021-06-03$28.68$28.68270,700
2021-06-02$28.12$28.12205,700
2021-06-01$27.44$27.44355,000
2021-05-28$29.17$29.17218,200
2021-05-27$30.43$30.43745,800
2021-05-26$26.66$26.66353,800
2021-05-25$25.26$25.26218,200
2021-05-24$25.05$25.05225,600
2021-05-21$24.42$24.42243,100
2021-05-20$23.17$23.17191,500
2021-05-19$23.97$23.97223,600
2021-05-18$23.83$23.83303,700
2021-05-17$23.00$23.00357,900
2021-05-14$22.98$22.98219,500
2021-05-13$21.63$21.63344,900
2021-05-12$21.85$21.85473,100
2021-05-11$22.97$22.97339,400
2021-05-10$23.39$23.39291,200
2021-05-07$24.62$24.62276,300
2021-05-06$23.66$23.66388,300
2021-05-05$24.11$24.11456,900
2021-05-04$24.75$24.75587,300
2021-05-03$27.04$27.04357,000
2021-04-30$26.54$26.54287,800
2021-04-29$26.85$26.85296,400
2021-04-28$26.66$26.66223,300
2021-04-27$25.14$25.14274,600
2021-04-26$25.43$25.43166,000
2021-04-23$23.80$23.80213,400
2021-04-22$23.76$23.76128,400
2021-04-21$23.22$23.22234,000
2021-04-20$22.53$22.53121,600
2021-04-19$23.76$23.76222,100
2021-04-16$24.85$24.85218,700
2021-04-15$25.65$25.65254,800
2021-04-14$23.96$23.96208,400
2021-04-13$23.37$23.37317,000
2021-04-12$21.91$21.91221,000
2021-04-09$22.78$22.78116,600
2021-04-08$23.49$23.49132,100
2021-04-07$23.24$23.24208,400
2021-04-06$24.60$24.60303,900
2021-04-05$24.90$24.90385,700
2021-04-01$24.74$24.74370,600
2021-03-31$25.12$25.121,007,800
2021-03-30$22.66$22.66382,200
2021-03-29$24.30$24.30525,600
2021-03-26$26.90$26.90414,500
2021-03-25$28.24$28.241,144,500
2021-03-24$25.40$25.401,340,200
2021-03-23$21.74$21.74291,700
2021-03-22$24.54$24.54198,100
2021-03-19$24.36$24.361,457,100
2021-03-18$23.90$23.90336,100
2021-03-17$24.79$24.79310,700
2021-03-16$25.62$25.62359,100
2021-03-15$24.74$24.74522,300
2021-03-12$23.04$23.04318,600
2021-03-11$23.81$23.81404,500
2021-03-10$22.35$22.35617,900
2021-03-09$21.79$21.79442,800
2021-03-08$20.62$20.62272,800
2021-03-05$21.37$21.37318,100
2021-03-04$21.18$21.18567,400
2021-03-03$21.91$21.91289,900
2021-03-02$21.71$21.71490,800
2021-03-01$21.49$21.49343,600
2021-02-26$22.32$22.32451,900
2021-02-25$22.60$22.60287,500
2021-02-24$22.95$22.95273,600
2021-02-23$21.11$21.11615,800
2021-02-22$21.95$21.95481,600
2021-02-19$23.25$23.25654,900
2021-02-18$23.75$23.75841,900
2021-02-17$24.00$24.00826,100
2021-02-16$23.00$23.00802,800
2021-02-12$22.85$22.852,834,900
2021-02-11$15.70$15.70250,800
2021-02-10$15.73$15.73258,100
2021-02-09$15.38$15.38351,400
2021-02-08$15.52$15.52430,300
2021-02-05$14.52$14.52426,000
2021-02-04$14.58$14.58643,900
2021-02-03$14.16$14.16631,900
2021-02-02$14.35$14.352,493,700
2021-02-01$11.00$11.00692,400
2021-01-29$11.21$11.21604,800
2021-01-28$11.93$11.93142,800
2021-01-27$12.07$12.07339,300
2021-01-26$13.26$13.26237,800
2021-01-25$13.77$13.77100,300
2021-01-22$13.61$13.61122,400
2021-01-21$13.35$13.35139,500
2021-01-20$13.56$13.56145,700
2021-01-19$13.74$13.74119,000
2021-01-15$13.59$13.59202,400
2021-01-14$14.40$14.40172,400
2021-01-13$13.61$13.61166,300
2021-01-12$13.46$13.46164,400
2021-01-11$13.24$13.24299,500
2021-01-08$12.82$12.8296,200
2021-01-07$12.67$12.6797,100
2021-01-06$12.39$12.39129,100
2021-01-05$12.37$12.37128,600
2021-01-04$12.30$12.30141,500