NASDAQ:ALKS | Historical Stock Price | Alkermes plc.

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
1991-07-16 to 2026-09-04
Data captured

Stock Price Chart

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

$1.19$2.80$6.60$15.56$36.69$86.491991-07-162026-08-27

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

View year

Historical Stock Price — 2017

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2017-12-29$54.73$54.73450,900
2017-12-28$55.39$55.39783,600
2017-12-27$54.57$54.57731,900
2017-12-26$53.71$53.71584,900
2017-12-22$53.04$53.04717,500
2017-12-21$52.52$52.52515,800
2017-12-20$52.12$52.12640,300
2017-12-19$51.80$51.80648,000
2017-12-18$52.19$52.19476,100
2017-12-15$52.62$52.622,641,500
2017-12-14$51.56$51.56901,300
2017-12-13$52.25$52.251,146,600
2017-12-12$52.15$52.15777,500
2017-12-11$52.16$52.161,027,800
2017-12-08$52.88$52.88852,700
2017-12-07$52.78$52.78945,000
2017-12-06$52.76$52.761,165,200
2017-12-05$54.34$54.341,203,700
2017-12-04$54.58$54.581,550,400
2017-12-01$53.70$53.701,692,600
2017-11-30$52.29$52.29856,200
2017-11-29$51.45$51.45873,600
2017-11-28$51.15$51.15997,400
2017-11-27$50.36$50.362,409,300
2017-11-24$51.05$51.05547,000
2017-11-22$50.15$50.15454,200
2017-11-21$49.36$49.36908,400
2017-11-20$47.77$47.77427,300
2017-11-17$48.40$48.40897,100
2017-11-16$47.75$47.75592,900
2017-11-15$48.08$48.08946,900
2017-11-14$47.69$47.691,157,700
2017-11-13$49.17$49.17913,000
2017-11-10$47.85$47.851,285,400
2017-11-09$48.05$48.05478,500
2017-11-08$48.03$48.03799,400
2017-11-07$47.70$47.70870,900
2017-11-06$48.76$48.761,677,800
2017-11-03$50.99$50.99956,100
2017-11-02$48.84$48.84827,200
2017-11-01$48.65$48.65848,500
2017-10-31$48.76$48.76895,900
2017-10-30$48.89$48.891,650,300
2017-10-27$49.85$49.852,192,900
2017-10-26$54.97$54.973,023,200
2017-10-25$49.49$49.491,025,200
2017-10-24$50.38$50.381,379,400
2017-10-23$49.47$49.471,131,900
2017-10-20$50.58$50.58809,100
2017-10-19$50.56$50.56600,600
2017-10-18$51.09$51.09529,500
2017-10-17$51.48$51.48518,000
2017-10-16$50.75$50.75797,600
2017-10-13$50.29$50.29384,800
2017-10-12$50.33$50.33928,100
2017-10-11$51.56$51.56692,100
2017-10-10$51.17$51.17375,100
2017-10-09$51.28$51.28346,400
2017-10-06$51.50$51.50476,300
2017-10-05$52.26$52.26422,800
2017-10-04$51.87$51.87346,600
2017-10-03$51.43$51.43507,400
2017-10-02$51.73$51.73958,100
2017-09-29$50.84$50.84665,200
2017-09-28$51.82$51.82681,400
2017-09-27$51.32$51.32804,900
2017-09-26$51.46$51.46686,700
2017-09-25$51.78$51.78859,800
2017-09-22$50.37$50.37385,400
2017-09-21$50.34$50.34361,100
2017-09-20$50.66$50.66535,000
2017-09-19$50.54$50.54674,100
2017-09-18$52.02$52.02560,200
2017-09-15$52.02$52.021,583,100
2017-09-14$52.33$52.33725,200
2017-09-13$52.29$52.29914,700
2017-09-12$53.39$53.391,288,400
2017-09-11$52.44$52.441,050,500
2017-09-08$50.56$50.56627,700
2017-09-07$50.36$50.36687,400
2017-09-06$49.81$49.81482,900
2017-09-05$49.54$49.54961,700
2017-09-01$49.72$49.72776,100
2017-08-31$50.78$50.78917,500
2017-08-30$49.50$49.50379,900
2017-08-29$49.16$49.16746,000
2017-08-28$50.12$50.12715,400
2017-08-25$50.42$50.42589,900
2017-08-24$50.49$50.49745,800
2017-08-23$50.21$50.21457,500
2017-08-22$50.05$50.05634,800
2017-08-21$50.68$50.68476,800
2017-08-18$50.90$50.90701,000
2017-08-17$50.92$50.92452,900
2017-08-16$51.56$51.56367,600
2017-08-15$51.60$51.60543,700
2017-08-14$51.62$51.62670,300
2017-08-11$51.91$51.91530,400
2017-08-10$51.66$51.66747,600
2017-08-09$52.38$52.38482,000
2017-08-08$53.02$53.02709,500
2017-08-07$54.13$54.13489,400
2017-08-04$53.77$53.77408,000
2017-08-03$53.92$53.92386,500
2017-08-02$54.04$54.04580,600
2017-08-01$54.45$54.45985,100
2017-07-31$54.41$54.411,087,500
2017-07-28$55.22$55.221,106,600
2017-07-27$54.90$54.902,410,500
2017-07-26$57.57$57.57628,800
2017-07-25$57.99$57.99763,900
2017-07-24$58.63$58.63817,000
2017-07-21$57.73$57.73705,900
2017-07-20$57.53$57.53677,000
2017-07-19$57.62$57.62906,700
2017-07-18$58.01$58.01712,800
2017-07-17$59.66$59.66935,600
2017-07-14$58.86$58.86543,800
2017-07-13$58.79$58.79635,900
2017-07-12$57.87$57.87431,000
2017-07-11$57.42$57.42637,700
2017-07-10$58.10$58.10748,700
2017-07-07$59.53$59.53575,300
2017-07-06$59.47$59.471,555,800
2017-07-05$60.45$60.451,112,400
2017-07-03$58.70$58.70512,100
2017-06-30$57.97$57.97801,800
2017-06-29$57.92$57.92691,600
2017-06-28$58.16$58.16537,900
2017-06-27$57.12$57.12771,400
2017-06-26$58.30$58.30781,800
2017-06-23$58.47$58.47992,400
2017-06-22$58.68$58.68684,200
2017-06-21$57.66$57.66800,000
2017-06-20$57.18$57.181,222,800
2017-06-19$57.51$57.511,136,400
2017-06-16$57.15$57.151,494,200
2017-06-15$58.33$58.33677,600
2017-06-14$59.47$59.47631,000
2017-06-13$58.61$58.611,108,800
2017-06-12$59.47$59.471,049,200
2017-06-09$61.66$61.661,528,400
2017-06-08$60.31$60.31717,100
2017-06-07$59.57$59.57524,300
2017-06-06$58.99$58.99767,700
2017-06-05$58.02$58.021,682,000
2017-06-02$59.38$59.38697,300
2017-06-01$59.55$59.55727,400
2017-05-31$57.76$57.761,068,000
2017-05-30$57.70$57.70674,400
2017-05-26$57.70$57.70571,100
2017-05-25$57.94$57.94937,300
2017-05-24$58.25$58.25867,900
2017-05-23$57.71$57.71821,800
2017-05-22$58.32$58.32542,000
2017-05-19$57.91$57.91728,600
2017-05-18$57.93$57.93743,100
2017-05-17$57.22$57.221,001,400
2017-05-16$60.47$60.47745,200
2017-05-15$59.09$59.09645,800
2017-05-12$58.41$58.41426,400
2017-05-11$57.38$57.38810,500
2017-05-10$57.72$57.72729,900
2017-05-09$57.34$57.34810,600
2017-05-08$57.20$57.20875,400
2017-05-05$59.69$59.69853,600
2017-05-04$60.41$60.41842,400
2017-05-03$58.90$58.901,006,700
2017-05-02$58.51$58.51802,000
2017-05-01$59.34$59.341,016,200
2017-04-28$58.25$58.251,279,600
2017-04-27$56.30$56.301,130,700
2017-04-26$57.13$57.13560,100
2017-04-25$57.00$57.00966,400
2017-04-24$56.73$56.73864,500
2017-04-21$56.57$56.57738,800
2017-04-20$56.73$56.73429,600
2017-04-19$56.45$56.45536,700
2017-04-18$55.90$55.90805,100
2017-04-17$56.84$56.84583,100
2017-04-13$57.16$57.16829,600
2017-04-12$56.95$56.95480,400
2017-04-11$56.98$56.98934,700
2017-04-10$58.17$58.17428,000
2017-04-07$58.69$58.69598,800
2017-04-06$57.54$57.54516,100
2017-04-05$57.72$57.72955,500
2017-04-04$58.75$58.751,064,200
2017-04-03$57.42$57.421,062,700
2017-03-31$58.50$58.502,262,200
2017-03-30$58.94$58.94343,700
2017-03-29$59.75$59.75502,300
2017-03-28$59.38$59.38631,600
2017-03-27$59.35$59.35804,500
2017-03-24$58.88$58.88789,400
2017-03-23$58.68$58.68684,900
2017-03-22$59.43$59.43656,300
2017-03-21$57.36$57.361,236,000
2017-03-20$59.68$59.68624,900
2017-03-17$59.31$59.311,000,100
2017-03-16$58.98$58.98836,200
2017-03-15$57.62$57.62961,600
2017-03-14$55.66$55.66590,100
2017-03-13$55.55$55.55816,000
2017-03-10$57.22$57.22703,200
2017-03-09$57.08$57.08870,100
2017-03-08$57.40$57.401,198,800
2017-03-07$58.80$58.80746,200
2017-03-06$60.20$60.20568,400
2017-03-03$60.97$60.97893,700
2017-03-02$61.16$61.161,586,400
2017-03-01$59.71$59.711,504,500
2017-02-28$56.50$56.501,423,400
2017-02-27$55.40$55.401,352,500
2017-02-24$52.98$52.98548,100
2017-02-23$52.57$52.57776,200
2017-02-22$53.29$53.29772,400
2017-02-21$54.19$54.19924,100
2017-02-17$54.57$54.57860,900
2017-02-16$55.55$55.55985,900
2017-02-15$56.89$56.891,658,900
2017-02-14$57.21$57.211,284,100
2017-02-13$54.80$54.80891,800
2017-02-10$55.11$55.111,160,600
2017-02-09$54.47$54.47510,200
2017-02-08$54.50$54.50523,600
2017-02-07$54.77$54.77506,800
2017-02-06$55.35$55.35333,800
2017-02-03$54.95$54.95629,700
2017-02-02$55.23$55.23805,500
2017-02-01$54.70$54.701,268,000
2017-01-31$54.11$54.111,329,100
2017-01-30$52.26$52.261,074,600
2017-01-27$54.34$54.34551,200
2017-01-26$54.85$54.85612,600
2017-01-25$55.66$55.66570,400
2017-01-24$55.71$55.71733,200
2017-01-23$55.74$55.74465,600
2017-01-20$55.98$55.98756,000
2017-01-19$56.08$56.08766,100
2017-01-18$55.83$55.83661,900
2017-01-17$54.56$54.56734,300
2017-01-13$55.46$55.46743,100
2017-01-12$54.65$54.65816,200
2017-01-11$54.60$54.602,012,400
2017-01-10$58.49$58.49793,100
2017-01-09$59.92$59.92791,400
2017-01-06$59.64$59.64575,100
2017-01-05$59.24$59.24690,900
2017-01-04$59.90$59.901,183,800
2017-01-03$56.10$56.10705,100