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.

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Historical Stock Price — 2010

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2010-12-31$12.28$12.28316,000
2010-12-30$12.30$12.30412,900
2010-12-29$12.35$12.35288,100
2010-12-28$12.53$12.53443,000
2010-12-27$12.43$12.43238,500
2010-12-23$12.42$12.42344,300
2010-12-22$12.33$12.33487,500
2010-12-21$12.57$12.57727,300
2010-12-20$12.31$12.31769,900
2010-12-17$12.01$12.011,437,600
2010-12-16$11.77$11.77347,000
2010-12-15$11.52$11.52697,200
2010-12-14$11.28$11.28401,900
2010-12-13$11.15$11.15362,900
2010-12-10$11.27$11.271,081,000
2010-12-09$11.11$11.11873,000
2010-12-08$11.21$11.21477,300
2010-12-07$11.26$11.26812,000
2010-12-06$10.86$10.862,043,600
2010-12-03$10.61$10.61389,700
2010-12-02$10.54$10.54670,300
2010-12-01$10.61$10.61653,800
2010-11-30$10.48$10.481,217,000
2010-11-29$10.66$10.66933,300
2010-11-26$10.86$10.86224,200
2010-11-24$10.93$10.931,062,800
2010-11-23$10.65$10.65768,800
2010-11-22$10.77$10.77554,000
2010-11-19$10.82$10.82732,100
2010-11-18$10.88$10.881,070,900
2010-11-17$10.68$10.681,026,200
2010-11-16$10.74$10.74863,500
2010-11-15$11.11$11.11489,600
2010-11-12$11.13$11.13675,100
2010-11-11$11.36$11.36884,700
2010-11-10$11.58$11.58865,800
2010-11-09$11.68$11.68805,500
2010-11-08$11.91$11.91911,900
2010-11-05$12.10$12.102,569,500
2010-11-04$11.93$11.93772,900
2010-11-03$11.89$11.89984,500
2010-11-02$11.75$11.75809,600
2010-11-01$11.40$11.40924,300
2010-10-29$11.57$11.57951,500
2010-10-28$11.49$11.491,356,900
2010-10-27$11.48$11.481,397,300
2010-10-26$10.88$10.881,436,500
2010-10-25$10.81$10.811,564,300
2010-10-22$11.07$11.071,569,200
2010-10-21$11.10$11.103,568,200
2010-10-20$10.50$10.5015,351,000
2010-10-19$14.50$14.501,292,800
2010-10-18$14.99$14.99685,300
2010-10-15$14.80$14.801,582,800
2010-10-14$14.96$14.961,564,200
2010-10-13$15.55$15.553,449,000
2010-10-12$15.68$15.681,580,700
2010-10-11$15.88$15.88954,300
2010-10-08$15.92$15.921,443,100
2010-10-07$15.62$15.621,531,100
2010-10-06$15.05$15.051,012,300
2010-10-05$14.92$14.92913,500
2010-10-04$14.68$14.68714,800
2010-10-01$14.79$14.791,967,200
2010-09-30$14.65$14.651,235,300
2010-09-29$14.58$14.58474,600
2010-09-28$14.62$14.62495,400
2010-09-27$14.43$14.43389,900
2010-09-24$14.62$14.62688,400
2010-09-23$14.28$14.281,147,000
2010-09-22$14.07$14.071,090,900
2010-09-21$14.65$14.65627,800
2010-09-20$14.80$14.801,124,600
2010-09-17$14.87$14.874,554,900
2010-09-16$14.22$14.22400
2010-09-15$14.22$14.22981,300
2010-09-14$14.10$14.101,105,100
2010-09-13$14.30$14.30847,400
2010-09-10$13.98$13.98833,000
2010-09-09$13.72$13.72629,900
2010-09-08$13.85$13.85790,100
2010-09-07$13.94$13.94479,300
2010-09-03$14.24$14.24649,400
2010-09-02$13.93$13.93406,700
2010-09-01$13.73$13.73883,000
2010-08-31$13.27$13.27527,100
2010-08-30$13.46$13.46402,200
2010-08-27$13.71$13.71594,200
2010-08-26$13.35$13.35445,600
2010-08-25$13.49$13.49593,000
2010-08-24$13.27$13.27686,800
2010-08-23$13.31$13.31572,300
2010-08-20$13.73$13.73650,300
2010-08-19$13.51$13.51750,200
2010-08-18$13.94$13.94501,600
2010-08-17$13.89$13.89436,900
2010-08-16$13.64$13.64658,900
2010-08-13$13.55$13.55419,800
2010-08-12$13.59$13.59484,800
2010-08-11$13.67$13.67644,700
2010-08-10$14.25$14.25629,000
2010-08-09$14.46$14.46512,200
2010-08-06$14.18$14.181,581,000
2010-08-05$13.01$13.01566,000
2010-08-04$13.13$13.13658,100
2010-08-03$13.04$13.04692,300
2010-08-02$13.15$13.15642,600
2010-07-30$12.90$12.90531,000
2010-07-29$12.69$12.69798,200
2010-07-28$13.06$13.06542,300
2010-07-27$13.38$13.38597,100
2010-07-26$13.58$13.58793,100
2010-07-23$13.20$13.20679,400
2010-07-22$12.85$12.85577,800
2010-07-21$12.29$12.29606,900
2010-07-20$12.65$12.65921,200
2010-07-19$12.93$12.93470,700
2010-07-16$12.75$12.75701,300
2010-07-15$13.44$13.44841,200
2010-07-14$13.17$13.171,916,300
2010-07-13$13.00$13.001,076,200
2010-07-12$12.30$12.30548,500
2010-07-09$12.62$12.62652,300
2010-07-08$12.54$12.541,005,000
2010-07-07$12.38$12.38608,600
2010-07-06$12.09$12.09802,600
2010-07-02$12.32$12.32441,700
2010-07-01$12.18$12.18810,600
2010-06-30$12.45$12.45757,200
2010-06-29$12.56$12.56722,900
2010-06-28$12.95$12.951,188,700
2010-06-25$13.09$13.094,408,100
2010-06-24$12.22$12.22576,200
2010-06-23$12.46$12.46613,000
2010-06-22$12.32$12.32838,900
2010-06-21$12.72$12.72923,500
2010-06-18$12.65$12.653,734,500
2010-06-17$11.56$11.56520,000
2010-06-16$11.57$11.57348,600
2010-06-15$11.61$11.61833,000
2010-06-14$11.62$11.62717,300
2010-06-11$11.67$11.67485,000
2010-06-10$11.26$11.26531,800
2010-06-09$10.90$10.90952,800
2010-06-08$10.88$10.881,005,600
2010-06-07$11.02$11.02641,000
2010-06-04$11.56$11.56848,600
2010-06-03$12.11$12.11568,700
2010-06-02$11.94$11.941,537,400
2010-06-01$11.46$11.46990,300
2010-05-28$11.36$11.36453,600
2010-05-27$11.48$11.48647,200
2010-05-26$11.26$11.261,389,100
2010-05-25$11.02$11.021,730,200
2010-05-24$10.78$10.78738,300
2010-05-21$10.79$10.791,633,100
2010-05-20$10.70$10.701,661,400
2010-05-19$11.40$11.40881,900
2010-05-18$11.41$11.411,133,500
2010-05-17$11.74$11.741,757,700
2010-05-14$11.60$11.603,117,200
2010-05-13$12.61$12.61722,400
2010-05-12$12.65$12.65851,400
2010-05-11$11.98$11.981,076,500
2010-05-10$11.98$11.98995,200
2010-05-07$11.60$11.602,565,100
2010-05-06$12.00$12.001,766,100
2010-05-05$12.66$12.66748,700
2010-05-04$12.78$12.78811,200
2010-05-03$13.36$13.36675,700
2010-04-30$13.11$13.11277,500
2010-04-29$13.37$13.37844,200
2010-04-28$13.21$13.21658,100
2010-04-27$13.09$13.091,320,500
2010-04-26$13.16$13.16830,700
2010-04-23$13.35$13.35893,400
2010-04-22$13.40$13.40648,700
2010-04-21$13.26$13.26982,200
2010-04-20$13.23$13.23588,800
2010-04-19$12.96$12.96935,200
2010-04-16$13.48$13.48896,000
2010-04-15$13.57$13.57453,900
2010-04-14$13.75$13.75744,700
2010-04-13$13.39$13.39447,400
2010-04-12$13.34$13.34676,400
2010-04-09$13.40$13.40638,300
2010-04-08$13.49$13.491,145,100
2010-04-07$13.10$13.10875,600
2010-04-06$13.16$13.16659,600
2010-04-05$13.26$13.26551,700
2010-04-01$13.27$13.27941,300
2010-03-31$12.97$12.97700,300
2010-03-30$13.09$13.09663,600
2010-03-29$12.92$12.92435,700
2010-03-26$12.94$12.94756,200
2010-03-25$13.15$13.151,131,400
2010-03-24$13.00$13.00439,900
2010-03-23$13.17$13.17678,400
2010-03-22$13.14$13.141,248,000
2010-03-19$12.94$12.942,563,000
2010-03-18$13.31$13.31905,300
2010-03-17$13.33$13.331,862,200
2010-03-16$13.62$13.622,857,300
2010-03-15$14.01$14.017,349,700
2010-03-12$12.21$12.213,350,000
2010-03-11$12.64$12.643,958,800
2010-03-10$12.56$12.563,327,400
2010-03-09$12.92$12.925,082,600
2010-03-08$12.45$12.451,537,400
2010-03-05$12.20$12.20712,300
2010-03-04$11.89$11.89689,600
2010-03-03$11.94$11.941,000,700
2010-03-02$11.84$11.841,602,900
2010-03-01$11.57$11.57850,500
2010-02-26$11.46$11.46927,900
2010-02-25$11.10$11.10685,300
2010-02-24$11.18$11.18918,200
2010-02-23$11.20$11.20641,200
2010-02-22$11.47$11.47753,300
2010-02-19$11.70$11.70586,300
2010-02-18$11.80$11.80365,400
2010-02-17$12.00$12.00492,100
2010-02-16$11.92$11.92471,100
2010-02-12$11.85$11.85705,300
2010-02-11$11.69$11.69686,500
2010-02-10$11.67$11.67708,200
2010-02-09$11.43$11.431,175,800
2010-02-08$11.37$11.372,145,100
2010-02-05$11.18$11.183,124,600
2010-02-04$10.52$10.52954,100
2010-02-03$11.09$11.09607,400
2010-02-02$11.25$11.251,357,300
2010-02-01$11.04$11.04991,600
2010-01-29$10.94$10.941,462,200
2010-01-28$11.13$11.131,819,100
2010-01-27$11.50$11.501,488,800
2010-01-26$11.56$11.564,637,900
2010-01-25$10.78$10.78677,200
2010-01-22$10.87$10.87900,600
2010-01-21$11.23$11.231,781,300
2010-01-20$11.45$11.451,663,800
2010-01-19$11.09$11.091,402,600
2010-01-15$10.80$10.80986,400
2010-01-14$11.06$11.061,268,200
2010-01-13$10.85$10.851,563,000
2010-01-12$10.30$10.301,234,000
2010-01-11$10.31$10.311,119,800
2010-01-08$10.01$10.01646,100
2010-01-07$10.13$10.13916,600
2010-01-06$10.11$10.111,210,300
2010-01-05$9.69$9.69973,500
2010-01-04$9.71$9.71567,700