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 — 2003

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2003-12-31$13.50$13.50831,700
2003-12-30$13.74$13.74993,400
2003-12-29$13.05$13.05443,400
2003-12-26$12.86$12.86403,700
2003-12-24$13.03$13.03179,700
2003-12-23$13.14$13.14494,000
2003-12-22$12.90$12.90656,200
2003-12-19$12.81$12.81478,200
2003-12-18$12.88$12.881,599,100
2003-12-17$12.31$12.31805,200
2003-12-16$12.38$12.381,276,000
2003-12-15$12.22$12.22711,200
2003-12-12$12.85$12.85841,900
2003-12-11$12.56$12.561,197,400
2003-12-10$11.92$11.92946,800
2003-12-09$12.29$12.29547,100
2003-12-08$12.78$12.782,055,200
2003-12-05$13.03$13.032,480,900
2003-12-04$12.82$12.821,133,200
2003-12-03$12.42$12.421,013,500
2003-12-02$12.81$12.81878,500
2003-12-01$13.12$13.121,017,800
2003-11-28$13.03$13.03378,100
2003-11-26$12.86$12.861,166,400
2003-11-25$12.61$12.61646,400
2003-11-24$12.73$12.731,488,000
2003-11-21$11.83$11.832,137,100
2003-11-20$11.85$11.851,922,500
2003-11-19$11.60$11.601,429,100
2003-11-18$11.70$11.701,820,900
2003-11-17$11.74$11.741,645,300
2003-11-14$11.59$11.591,767,000
2003-11-13$12.41$12.41796,800
2003-11-12$12.25$12.251,291,200
2003-11-11$11.76$11.762,126,800
2003-11-10$11.90$11.901,207,100
2003-11-07$12.27$12.271,407,400
2003-11-06$12.54$12.542,232,900
2003-11-05$12.00$12.001,608,300
2003-11-04$12.07$12.071,231,900
2003-11-03$12.60$12.601,361,100
2003-10-31$12.97$12.971,731,700
2003-10-30$12.75$12.756,052,900
2003-10-29$13.73$13.731,397,200
2003-10-28$13.45$13.452,520,200
2003-10-27$13.73$13.731,606,400
2003-10-24$13.75$13.751,630,900
2003-10-23$13.80$13.801,576,300
2003-10-22$13.77$13.771,497,100
2003-10-21$14.70$14.701,462,000
2003-10-20$13.99$13.99846,100
2003-10-17$14.33$14.33911,800
2003-10-16$14.78$14.78728,800
2003-10-15$14.89$14.89649,100
2003-10-14$15.29$15.291,442,700
2003-10-13$15.56$15.561,287,800
2003-10-10$15.16$15.161,425,700
2003-10-09$15.31$15.312,485,000
2003-10-08$15.01$15.011,835,600
2003-10-07$15.35$15.351,484,600
2003-10-06$14.90$14.901,150,000
2003-10-03$15.28$15.282,796,700
2003-10-02$14.77$14.772,627,100
2003-10-01$13.73$13.731,466,800
2003-09-30$13.72$13.722,047,200
2003-09-29$13.24$13.241,257,100
2003-09-26$12.90$12.90666,700
2003-09-25$13.31$13.311,386,300
2003-09-24$13.30$13.301,448,800
2003-09-23$14.22$14.22681,900
2003-09-22$13.87$13.871,350,100
2003-09-19$14.23$14.232,229,200
2003-09-18$14.06$14.062,481,500
2003-09-17$13.49$13.491,549,000
2003-09-16$12.98$12.98593,600
2003-09-15$13.06$13.06708,500
2003-09-12$13.08$13.08632,700
2003-09-11$12.99$12.99784,400
2003-09-10$12.77$12.771,162,700
2003-09-09$13.23$13.233,223,300
2003-09-08$12.80$12.801,671,600
2003-09-05$12.20$12.201,264,400
2003-09-04$12.15$12.153,199,000
2003-09-03$11.62$11.622,909,500
2003-09-02$11.75$11.751,150,900
2003-08-29$11.65$11.651,447,700
2003-08-28$11.35$11.351,403,400
2003-08-27$11.05$11.05791,300
2003-08-26$11.04$11.041,070,400
2003-08-25$10.99$10.991,287,700
2003-08-22$11.12$11.121,433,100
2003-08-21$11.44$11.441,513,800
2003-08-20$11.39$11.392,701,600
2003-08-19$11.38$11.385,975,900
2003-08-18$12.64$12.641,160,900
2003-08-15$12.14$12.14481,500
2003-08-14$11.90$11.90889,300
2003-08-13$11.70$11.70966,900
2003-08-12$12.04$12.04508,700
2003-08-11$11.67$11.67782,500
2003-08-08$11.19$11.191,734,600
2003-08-07$12.19$12.191,089,300
2003-08-06$12.00$12.001,156,600
2003-08-05$12.51$12.511,084,900
2003-08-04$12.46$12.46974,200
2003-08-01$12.72$12.72750,400
2003-07-31$13.20$13.20687,600
2003-07-30$12.97$12.97601,000
2003-07-29$12.90$12.90515,600
2003-07-28$13.06$13.06690,700
2003-07-25$12.70$12.701,024,900
2003-07-24$12.99$12.991,512,000
2003-07-23$12.81$12.811,028,200
2003-07-22$12.63$12.631,343,200
2003-07-21$12.00$12.00824,700
2003-07-18$11.85$11.851,204,600
2003-07-17$12.12$12.12780,000
2003-07-16$12.50$12.501,317,100
2003-07-15$12.69$12.694,908,500
2003-07-14$12.49$12.4912,204,900
2003-07-11$11.65$11.654,444,400
2003-07-10$10.95$10.952,702,500
2003-07-09$11.15$11.15944,900
2003-07-08$11.01$11.013,975,500
2003-07-07$10.91$10.911,401,300
2003-07-03$10.46$10.46405,800
2003-07-02$10.45$10.451,350,100
2003-07-01$10.49$10.491,442,200
2003-06-30$10.62$10.621,464,800
2003-06-27$11.06$11.061,559,600
2003-06-26$11.28$11.282,208,400
2003-06-25$10.69$10.69705,200
2003-06-24$10.50$10.50753,800
2003-06-23$10.66$10.66945,100
2003-06-20$10.72$10.72728,200
2003-06-19$10.73$10.733,384,900
2003-06-18$11.73$11.731,021,400
2003-06-17$12.40$12.40899,900
2003-06-16$12.80$12.801,469,600
2003-06-13$12.25$12.25620,800
2003-06-12$12.68$12.68657,300
2003-06-11$12.98$12.98936,100
2003-06-10$12.49$12.49939,800
2003-06-09$12.38$12.38671,300
2003-06-06$13.22$13.223,189,700
2003-06-05$14.00$14.004,012,300
2003-06-04$13.69$13.693,672,400
2003-06-03$12.98$12.98887,900
2003-06-02$13.11$13.111,717,900
2003-05-30$12.89$12.891,574,600
2003-05-29$13.09$13.091,783,300
2003-05-28$13.19$13.193,553,000
2003-05-27$13.50$13.505,021,000
2003-05-23$12.84$12.842,642,800
2003-05-22$12.05$12.051,992,600
2003-05-21$11.30$11.30935,500
2003-05-20$11.20$11.201,961,600
2003-05-19$10.92$10.921,683,800
2003-05-16$11.27$11.272,422,400
2003-05-15$11.60$11.60771,200
2003-05-14$11.23$11.231,494,100
2003-05-13$10.63$10.63885,200
2003-05-12$10.41$10.41970,000
2003-05-09$10.14$10.14546,100
2003-05-08$10.13$10.13899,300
2003-05-07$10.34$10.34568,800
2003-05-06$10.10$10.10520,000
2003-05-05$10.07$10.07819,200
2003-05-02$10.29$10.29488,700
2003-05-01$9.90$9.90691,600
2003-04-30$9.96$9.961,984,600
2003-04-29$9.41$9.412,452,000
2003-04-28$10.50$10.50766,600
2003-04-25$10.00$10.00398,000
2003-04-24$10.02$10.02912,500
2003-04-23$9.95$9.951,516,500
2003-04-22$9.78$9.78886,800
2003-04-21$9.43$9.43360,100
2003-04-17$9.48$9.48495,000
2003-04-16$9.60$9.60379,600
2003-04-15$9.58$9.58483,600
2003-04-14$9.41$9.41447,900
2003-04-11$9.01$9.01849,300
2003-04-10$9.02$9.02748,500
2003-04-09$9.06$9.06647,100
2003-04-08$9.30$9.30320,700
2003-04-07$9.35$9.35564,300
2003-04-04$9.31$9.31441,900
2003-04-03$9.79$9.791,481,800
2003-04-02$9.47$9.47796,900
2003-04-01$8.85$8.85551,300
2003-03-31$9.07$9.071,087,600
2003-03-28$8.99$8.99774,000
2003-03-27$8.91$8.911,651,300
2003-03-26$8.52$8.52253,800
2003-03-25$8.62$8.62243,300
2003-03-24$8.36$8.36299,500
2003-03-21$8.75$8.75710,600
2003-03-20$8.66$8.66577,400
2003-03-19$8.29$8.29598,300
2003-03-18$8.35$8.351,481,700
2003-03-17$8.04$8.04768,800
2003-03-14$7.82$7.82766,300
2003-03-13$7.89$7.89388,900
2003-03-12$7.61$7.61540,500
2003-03-11$7.45$7.45363,800
2003-03-10$7.73$7.731,656,300
2003-03-07$7.66$7.66347,200
2003-03-06$7.58$7.58283,800
2003-03-05$7.70$7.70194,400
2003-03-04$7.72$7.72746,900
2003-03-03$7.87$7.87291,800
2003-02-28$7.94$7.94232,700
2003-02-27$7.95$7.951,547,700
2003-02-26$7.60$7.601,098,300
2003-02-25$7.70$7.70198,200
2003-02-24$7.60$7.60387,400
2003-02-21$7.91$7.91388,800
2003-02-20$7.93$7.93762,400
2003-02-19$7.90$7.90566,300
2003-02-18$7.94$7.94784,400
2003-02-14$7.54$7.54290,200
2003-02-13$7.37$7.37760,300
2003-02-12$7.52$7.52500,500
2003-02-11$7.69$7.69337,400
2003-02-10$7.55$7.55777,600
2003-02-07$7.51$7.51439,700
2003-02-06$7.40$7.40249,200
2003-02-05$7.50$7.50269,800
2003-02-04$7.35$7.35698,800
2003-02-03$7.65$7.65545,200
2003-01-31$7.68$7.68411,100
2003-01-30$7.39$7.39492,000
2003-01-29$7.74$7.74831,900
2003-01-28$7.69$7.691,421,000
2003-01-27$7.33$7.331,537,700
2003-01-24$7.38$7.382,194,400
2003-01-23$7.76$7.761,355,600
2003-01-22$8.05$8.051,410,300
2003-01-21$8.25$8.252,188,700
2003-01-17$8.07$8.071,571,800
2003-01-16$7.90$7.901,104,700
2003-01-15$7.93$7.931,079,100
2003-01-14$7.86$7.861,483,800
2003-01-13$7.97$7.974,137,700
2003-01-10$7.59$7.591,429,800
2003-01-09$7.20$7.202,103,800
2003-01-08$6.90$6.903,773,200
2003-01-07$6.98$6.982,883,000
2003-01-06$6.52$6.521,438,100
2003-01-03$6.55$6.552,363,200
2003-01-02$6.66$6.662,164,000