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 — 2012

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2012-12-31$18.52$18.52916,500——
2012-12-28$18.52$18.52479,200——
2012-12-27$18.81$18.81466,600——
2012-12-26$19.08$19.08404,700——
2012-12-24$19.22$19.22197,900——
2012-12-21$19.27$19.271,374,800——
2012-12-20$19.32$19.32490,100——
2012-12-19$19.26$19.26344,300——
2012-12-18$19.29$19.29720,900——
2012-12-17$19.34$19.34489,600——
2012-12-14$18.95$18.95484,100——
2012-12-13$18.82$18.82527,000——
2012-12-12$19.07$19.07533,700——
2012-12-11$19.39$19.39637,000——
2012-12-10$19.00$19.00727,300——
2012-12-07$18.69$18.69614,700——
2012-12-06$18.82$18.82988,700——
2012-12-05$18.86$18.861,014,700——
2012-12-04$19.60$19.60728,200——
2012-12-03$19.60$19.601,371,400——
2012-11-30$19.31$19.311,386,900——
2012-11-29$19.70$19.70675,600——
2012-11-28$19.46$19.46875,300——
2012-11-27$19.66$19.66699,200——
2012-11-26$19.97$19.971,034,000——
2012-11-23$19.84$19.84329,200——
2012-11-21$19.71$19.71590,300——
2012-11-20$19.86$19.861,021,200——
2012-11-19$19.93$19.93818,200——
2012-11-16$19.49$19.49977,000——
2012-11-15$18.96$18.961,062,200——
2012-11-14$19.47$19.47731,400——
2012-11-13$20.19$20.19580,200——
2012-11-12$20.28$20.28607,300——
2012-11-09$20.24$20.241,206,200——
2012-11-08$19.77$19.77685,000——
2012-11-07$19.95$19.951,315,600——
2012-11-06$20.61$20.611,305,500——
2012-11-05$20.04$20.04907,200——
2012-11-02$19.28$19.28968,500——
2012-11-01$19.50$19.501,360,200——
2012-10-31$18.52$18.521,071,000——
2012-10-26$18.84$18.84890,000——
2012-10-25$18.36$18.36436,900——
2012-10-24$18.08$18.08493,500——
2012-10-23$18.31$18.31537,000——
2012-10-22$18.40$18.40778,200——
2012-10-19$18.76$18.761,097,600——
2012-10-18$19.42$19.42819,400——
2012-10-17$19.74$19.74659,600——
2012-10-16$19.88$19.88764,500——
2012-10-15$19.45$19.45781,900——
2012-10-12$19.22$19.22599,800——
2012-10-11$19.12$19.121,119,700——
2012-10-10$19.30$19.30750,800——
2012-10-09$20.01$20.011,332,800——
2012-10-08$20.55$20.55310,800——
2012-10-05$20.88$20.88478,000——
2012-10-04$20.51$20.51621,800——
2012-10-03$20.61$20.61674,000——
2012-10-02$20.63$20.63587,900——
2012-10-01$20.64$20.641,059,000——
2012-09-28$20.75$20.75743,600——
2012-09-27$20.66$20.661,320,200——
2012-09-26$20.54$20.541,328,300——
2012-09-25$20.44$20.441,469,400——
2012-09-24$20.87$20.871,569,600——
2012-09-21$20.52$20.522,894,300——
2012-09-20$19.98$19.981,117,800——
2012-09-19$19.64$19.641,036,700——
2012-09-18$19.60$19.601,104,300——
2012-09-17$19.49$19.49657,400——
2012-09-14$19.15$19.15737,600——
2012-09-13$18.91$18.91667,500——
2012-09-12$18.73$18.73489,500——
2012-09-11$18.77$18.77369,900——
2012-09-10$18.94$18.94456,500——
2012-09-07$18.99$18.99674,400——
2012-09-06$18.99$18.99682,200——
2012-09-05$18.41$18.41724,000——
2012-09-04$18.39$18.39766,500——
2012-08-31$18.35$18.35492,500——
2012-08-30$18.53$18.53806,200——
2012-08-29$18.59$18.591,146,600——
2012-08-28$18.34$18.34998,900——
2012-08-27$17.80$17.80883,100——
2012-08-24$17.94$17.94439,200——
2012-08-23$17.71$17.71777,000——
2012-08-22$17.93$17.93583,300——
2012-08-21$18.22$18.22995,800——
2012-08-20$18.34$18.341,432,500——
2012-08-17$17.85$17.85625,300——
2012-08-16$17.83$17.83535,200——
2012-08-15$18.08$18.08554,600——
2012-08-14$17.78$17.78790,700——
2012-08-13$17.68$17.68560,500——
2012-08-10$17.66$17.66520,100——
2012-08-09$17.54$17.54550,000——
2012-08-08$17.68$17.681,031,300——
2012-08-07$17.99$17.99806,100——
2012-08-06$18.13$18.13920,700——
2012-08-03$18.11$18.11891,000——
2012-08-02$18.20$18.20805,000——
2012-08-01$18.21$18.211,021,800——
2012-07-31$18.59$18.591,186,000——
2012-07-30$19.03$19.031,177,900——
2012-07-27$19.53$19.532,449,500——
2012-07-26$18.79$18.792,570,200——
2012-07-25$18.79$18.791,291,000——
2012-07-24$18.55$18.551,041,900——
2012-07-23$18.72$18.721,377,600——
2012-07-20$18.85$18.852,017,700——
2012-07-19$18.78$18.782,719,300——
2012-07-18$18.13$18.132,429,800——
2012-07-17$17.49$17.491,155,700——
2012-07-16$17.30$17.30660,000——
2012-07-13$17.27$17.27569,300——
2012-07-12$17.22$17.221,246,600——
2012-07-11$17.38$17.381,392,100——
2012-07-10$17.44$17.44922,200——
2012-07-09$17.48$17.48988,600——
2012-07-06$17.69$17.69923,400——
2012-07-05$17.75$17.75835,800——
2012-07-03$17.88$17.88968,600——
2012-07-02$17.56$17.562,407,800——
2012-06-29$16.97$16.97918,000——
2012-06-28$16.32$16.32726,200——
2012-06-27$16.56$16.56953,700——
2012-06-26$15.96$15.96829,700——
2012-06-25$16.20$16.201,193,100——
2012-06-22$16.15$16.154,964,100——
2012-06-21$15.89$15.891,035,600——
2012-06-20$16.15$16.15924,000——
2012-06-19$16.64$16.641,436,100——
2012-06-18$16.27$16.271,411,000——
2012-06-15$15.68$15.681,761,100——
2012-06-14$16.01$16.011,052,500——
2012-06-13$15.88$15.881,262,000——
2012-06-12$15.89$15.891,053,600——
2012-06-11$15.75$15.752,408,700——
2012-06-08$15.39$15.39930,900——
2012-06-07$15.16$15.16813,900——
2012-06-06$15.60$15.601,278,700——
2012-06-05$15.30$15.301,266,200——
2012-06-04$15.27$15.271,356,700——
2012-06-01$15.12$15.122,538,400——
2012-05-31$15.62$15.621,905,500——
2012-05-30$16.06$16.061,211,600——
2012-05-29$16.58$16.581,711,700——
2012-05-25$16.14$16.141,042,900——
2012-05-24$15.95$15.951,123,800——
2012-05-23$15.94$15.941,731,400——
2012-05-22$16.22$16.221,322,500——
2012-05-21$16.55$16.551,224,400——
2012-05-18$16.42$16.421,276,700——
2012-05-17$16.71$16.712,996,300——
2012-05-16$18.22$18.22907,900——
2012-05-15$17.99$17.99748,200——
2012-05-14$17.98$17.98699,100——
2012-05-11$18.09$18.091,147,300——
2012-05-10$17.96$17.961,065,600——
2012-05-09$17.57$17.571,209,800——
2012-05-08$17.79$17.791,232,200——
2012-05-07$18.31$18.311,053,600——
2012-05-04$18.07$18.071,733,700——
2012-05-03$18.35$18.351,178,100——
2012-05-02$18.37$18.371,454,100——
2012-05-01$17.60$17.601,206,300——
2012-04-30$17.30$17.301,131,400——
2012-04-27$17.88$17.88761,200——
2012-04-26$17.65$17.65606,100——
2012-04-25$17.90$17.90771,400——
2012-04-24$17.58$17.58872,800——
2012-04-23$17.34$17.34658,100——
2012-04-20$17.56$17.56753,600——
2012-04-19$17.23$17.23902,300——
2012-04-18$17.31$17.31840,900——
2012-04-17$17.68$17.68874,300——
2012-04-16$17.47$17.47613,100——
2012-04-13$17.56$17.56632,800——
2012-04-12$17.99$17.991,023,700——
2012-04-11$17.73$17.73757,800——
2012-04-10$17.61$17.61981,300——
2012-04-09$18.17$18.171,018,000——
2012-04-05$18.64$18.641,878,300——
2012-04-04$18.47$18.471,046,700——
2012-04-03$18.41$18.41914,700——
2012-04-02$18.62$18.621,532,400——
2012-03-30$18.55$18.551,674,800——
2012-03-29$18.39$18.391,984,500——
2012-03-28$17.91$17.912,867,300——
2012-03-27$16.98$16.98741,600——
2012-03-26$17.02$17.021,020,800——
2012-03-23$16.48$16.48840,600——
2012-03-22$16.58$16.58981,800——
2012-03-21$16.19$16.19885,300——
2012-03-20$16.14$16.141,954,700——
2012-03-19$16.79$16.79615,400——
2012-03-16$16.74$16.741,448,700——
2012-03-15$16.89$16.89766,800——
2012-03-14$17.08$17.08751,500——
2012-03-13$17.31$17.311,047,200——
2012-03-12$17.09$17.091,046,900——
2012-03-09$17.21$17.211,600,300——
2012-03-08$17.25$17.2510,585,700——
2012-03-07$17.30$17.30502,400——
2012-03-06$17.25$17.25715,700——
2012-03-05$17.10$17.10755,400——
2012-03-02$17.27$17.27550,200——
2012-03-01$17.46$17.46598,100——
2012-02-29$17.66$17.661,154,800——
2012-02-28$17.59$17.59652,300——
2012-02-27$17.17$17.17529,900——
2012-02-24$17.29$17.29591,500——
2012-02-23$17.58$17.58530,400——
2012-02-22$17.28$17.28774,700——
2012-02-21$17.70$17.70543,300——
2012-02-17$18.38$18.38406,000——
2012-02-16$18.57$18.57573,600——
2012-02-15$18.33$18.33582,900——
2012-02-14$18.49$18.49572,000——
2012-02-13$18.76$18.76739,800——
2012-02-10$17.98$17.98801,300——
2012-02-09$18.47$18.47572,700——
2012-02-08$18.88$18.88820,100——
2012-02-07$19.26$19.26775,000——
2012-02-06$19.50$19.501,045,700——
2012-02-03$19.15$19.151,538,800——
2012-02-02$19.00$19.001,560,200——
2012-02-01$18.73$18.731,415,600——
2012-01-31$18.81$18.811,328,800——
2012-01-30$18.86$18.862,444,700——
2012-01-27$19.10$19.10720,300——
2012-01-26$19.28$19.281,475,200——
2012-01-25$19.05$19.053,167,600——
2012-01-24$17.95$17.95968,400——
2012-01-23$17.69$17.69556,600——
2012-01-20$18.02$18.02519,800——
2012-01-19$18.22$18.221,484,700——
2012-01-18$18.60$18.60635,500——
2012-01-17$18.48$18.48690,800——
2012-01-13$18.16$18.16541,100——
2012-01-12$18.18$18.18623,800——
2012-01-11$18.14$18.14801,000——
2012-01-10$18.08$18.081,424,700——
2012-01-09$17.40$17.401,263,400——
2012-01-06$16.68$16.68920,100——
2012-01-05$16.98$16.98652,400——
2012-01-04$17.20$17.20475,100——
2012-01-03$17.34$17.34660,300——