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 — 2006

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2006-12-29$13.37$13.371,477,900
2006-12-28$13.40$13.401,418,600
2006-12-27$13.67$13.671,266,200
2006-12-26$13.66$13.661,216,800
2006-12-22$13.59$13.591,566,700
2006-12-21$13.45$13.451,541,000
2006-12-20$13.70$13.702,049,900
2006-12-19$13.70$13.701,451,000
2006-12-18$13.92$13.922,355,600
2006-12-15$14.12$14.122,255,000
2006-12-14$13.79$13.792,230,100
2006-12-13$13.87$13.871,834,800
2006-12-12$14.31$14.311,148,800
2006-12-11$14.55$14.551,379,900
2006-12-08$14.86$14.861,086,900
2006-12-07$14.97$14.972,052,900
2006-12-06$15.61$15.611,004,100
2006-12-05$15.85$15.851,113,200
2006-12-04$15.48$15.481,375,700
2006-12-01$15.26$15.26964,000
2006-11-30$15.18$15.181,298,400
2006-11-29$15.25$15.25762,500
2006-11-28$15.04$15.041,244,400
2006-11-27$15.20$15.201,361,700
2006-11-24$16.03$16.03168,200
2006-11-22$16.09$16.09845,300
2006-11-21$15.75$15.751,071,000
2006-11-20$16.09$16.09741,100
2006-11-17$16.28$16.28598,500
2006-11-16$16.27$16.27589,900
2006-11-15$16.19$16.19892,900
2006-11-14$16.25$16.25927,200
2006-11-13$16.15$16.151,128,800
2006-11-10$15.68$15.68703,200
2006-11-09$15.69$15.691,042,000
2006-11-08$16.47$16.47652,200
2006-11-07$16.35$16.351,318,400
2006-11-06$15.69$15.691,588,700
2006-11-03$15.25$15.252,974,600
2006-11-02$16.25$16.25854,300
2006-11-01$16.10$16.101,038,700
2006-10-31$16.80$16.80580,300
2006-10-30$17.06$17.06821,400
2006-10-27$17.48$17.48966,400
2006-10-26$17.21$17.21773,200
2006-10-25$16.91$16.91715,700
2006-10-24$16.63$16.63940,000
2006-10-23$16.73$16.73707,600
2006-10-20$16.89$16.891,041,700
2006-10-19$16.42$16.421,105,400
2006-10-18$16.43$16.43877,700
2006-10-17$16.18$16.18857,400
2006-10-16$16.40$16.40674,200
2006-10-13$16.48$16.48925,800
2006-10-12$16.09$16.09856,500
2006-10-11$15.54$15.541,456,400
2006-10-10$15.65$15.651,369,100
2006-10-09$16.10$16.10650,100
2006-10-06$15.82$15.82539,900
2006-10-05$16.14$16.141,460,200
2006-10-04$15.70$15.70875,800
2006-10-03$15.31$15.311,559,600
2006-10-02$15.10$15.101,551,900
2006-09-29$15.85$15.852,725,000
2006-09-28$15.07$15.072,380,300
2006-09-27$14.64$14.641,784,900
2006-09-26$14.17$14.172,899,500
2006-09-25$13.55$13.551,244,900
2006-09-22$13.18$13.182,682,100
2006-09-21$13.69$13.691,675,700
2006-09-20$14.45$14.45821,500
2006-09-19$14.70$14.70973,200
2006-09-18$14.93$14.931,013,600
2006-09-15$14.85$14.851,932,400
2006-09-14$14.85$14.85883,200
2006-09-13$15.06$15.06944,800
2006-09-12$15.13$15.131,146,800
2006-09-11$15.01$15.011,277,200
2006-09-08$15.23$15.231,138,400
2006-09-07$15.52$15.521,216,900
2006-09-06$15.97$15.97993,300
2006-09-05$16.58$16.581,070,000
2006-09-01$16.13$16.131,122,400
2006-08-31$16.35$16.351,135,100
2006-08-30$16.61$16.61681,400
2006-08-29$16.51$16.51737,600
2006-08-28$16.46$16.46527,800
2006-08-25$16.22$16.22665,200
2006-08-24$16.01$16.01531,800
2006-08-23$15.87$15.87664,200
2006-08-22$16.03$16.03715,600
2006-08-21$16.03$16.03610,400
2006-08-18$16.41$16.41983,400
2006-08-17$16.34$16.341,485,000
2006-08-16$16.69$16.69610,700
2006-08-15$16.49$16.49652,900
2006-08-14$16.01$16.01879,000
2006-08-11$16.00$16.00919,400
2006-08-10$16.15$16.151,597,200
2006-08-09$16.57$16.571,236,700
2006-08-08$16.21$16.21799,100
2006-08-07$16.61$16.61611,900
2006-08-04$17.00$17.00921,900
2006-08-03$17.32$17.32997,300
2006-08-02$16.71$16.71567,000
2006-08-01$16.62$16.62642,800
2006-07-31$17.16$17.16603,100
2006-07-28$17.17$17.17602,200
2006-07-27$16.79$16.79638,400
2006-07-26$17.24$17.24823,500
2006-07-25$16.91$16.91761,400
2006-07-24$16.60$16.60714,000
2006-07-21$15.92$15.921,067,000
2006-07-20$16.35$16.35759,000
2006-07-19$16.65$16.651,082,700
2006-07-18$16.04$16.041,500,000
2006-07-17$16.37$16.37473,000
2006-07-14$16.61$16.611,666,100
2006-07-13$16.70$16.701,106,500
2006-07-12$17.54$17.54587,400
2006-07-11$17.98$17.98784,600
2006-07-10$17.88$17.88608,600
2006-07-07$18.17$18.17990,900
2006-07-06$18.70$18.70597,300
2006-07-05$18.70$18.70754,900
2006-07-03$19.11$19.11315,900
2006-06-30$18.92$18.921,109,300
2006-06-29$18.75$18.751,520,900
2006-06-28$17.91$17.91900,100
2006-06-27$17.94$17.94974,200
2006-06-26$18.80$18.80732,700
2006-06-23$19.13$19.131,499,700
2006-06-22$18.46$18.46682,700
2006-06-21$18.33$18.33501,200
2006-06-20$17.99$17.99549,700
2006-06-19$18.07$18.07706,000
2006-06-16$18.64$18.641,806,700
2006-06-15$19.38$19.38987,900
2006-06-14$18.57$18.571,354,300
2006-06-13$18.03$18.031,829,300
2006-06-12$19.12$19.121,007,600
2006-06-09$20.10$20.10963,200
2006-06-08$20.51$20.511,962,600
2006-06-07$20.15$20.151,186,700
2006-06-06$19.81$19.811,203,900
2006-06-05$19.60$19.601,249,900
2006-06-02$20.62$20.621,015,900
2006-06-01$20.21$20.211,022,600
2006-05-31$19.82$19.821,329,100
2006-05-30$20.02$20.02830,600
2006-05-26$20.47$20.471,689,000
2006-05-25$19.97$19.971,658,700
2006-05-24$18.53$18.532,247,800
2006-05-23$18.74$18.742,364,200
2006-05-22$19.68$19.681,687,300
2006-05-19$19.93$19.933,162,000
2006-05-18$19.66$19.661,302,400
2006-05-17$19.94$19.941,464,500
2006-05-16$20.42$20.42987,800
2006-05-15$20.52$20.52970,400
2006-05-12$20.86$20.862,077,600
2006-05-11$20.76$20.761,591,200
2006-05-10$21.16$21.161,659,300
2006-05-09$21.38$21.38599,000
2006-05-08$21.52$21.521,042,600
2006-05-05$21.66$21.66924,800
2006-05-04$21.25$21.25701,100
2006-05-03$21.00$21.001,081,100
2006-05-02$20.49$20.491,350,100
2006-05-01$21.15$21.151,103,700
2006-04-28$21.47$21.47987,200
2006-04-27$21.43$21.431,474,500
2006-04-26$21.56$21.561,001,300
2006-04-25$21.41$21.411,406,700
2006-04-24$21.63$21.631,717,400
2006-04-21$21.58$21.581,507,900
2006-04-20$22.05$22.053,422,800
2006-04-19$21.21$21.212,920,700
2006-04-18$21.63$21.632,184,500
2006-04-17$21.54$21.547,761,900
2006-04-13$21.96$21.965,513,800
2006-04-12$21.07$21.071,700,900
2006-04-11$20.74$20.742,240,800
2006-04-10$21.21$21.211,823,500
2006-04-07$20.97$20.972,011,600
2006-04-06$21.20$21.201,809,400
2006-04-05$21.92$21.921,312,600
2006-04-04$21.84$21.841,182,600
2006-04-03$21.91$21.912,137,900
2006-03-31$22.05$22.053,216,800
2006-03-30$22.30$22.302,171,800
2006-03-29$22.84$22.841,679,100
2006-03-28$23.09$23.09995,600
2006-03-27$23.73$23.73914,800
2006-03-24$24.15$24.151,159,700
2006-03-23$24.06$24.061,092,000
2006-03-22$25.13$25.131,115,500
2006-03-21$24.71$24.711,168,200
2006-03-20$25.89$25.891,573,700
2006-03-17$25.16$25.161,230,000
2006-03-16$25.21$25.21745,500
2006-03-15$25.70$25.70866,800
2006-03-14$25.20$25.20832,700
2006-03-13$24.79$24.79850,400
2006-03-10$24.93$24.93815,300
2006-03-09$24.58$24.581,192,500
2006-03-08$24.82$24.821,584,300
2006-03-07$24.25$24.251,571,200
2006-03-06$25.24$25.241,050,300
2006-03-03$25.74$25.741,655,500
2006-03-02$25.88$25.881,253,100
2006-03-01$26.46$26.462,807,900
2006-02-28$25.41$25.413,249,400
2006-02-27$26.71$26.715,853,400
2006-02-24$24.00$24.00830,400
2006-02-23$23.62$23.62729,600
2006-02-22$23.36$23.36734,700
2006-02-21$22.84$22.841,076,600
2006-02-17$23.55$23.551,445,700
2006-02-16$23.75$23.751,354,700
2006-02-15$23.39$23.391,032,900
2006-02-14$23.16$23.161,281,400
2006-02-13$22.20$22.201,295,800
2006-02-10$22.77$22.771,172,100
2006-02-09$22.96$22.961,138,200
2006-02-08$23.37$23.371,697,000
2006-02-07$22.60$22.601,435,500
2006-02-06$23.04$23.041,137,900
2006-02-03$23.13$23.131,055,200
2006-02-02$23.42$23.421,582,400
2006-02-01$24.54$24.541,287,400
2006-01-31$24.34$24.341,076,100
2006-01-30$24.20$24.201,251,000
2006-01-27$24.49$24.491,282,700
2006-01-26$24.11$24.111,257,100
2006-01-25$23.43$23.431,381,800
2006-01-24$23.40$23.401,127,300
2006-01-23$23.35$23.351,411,000
2006-01-20$23.20$23.203,584,200
2006-01-19$24.57$24.571,964,400
2006-01-18$24.31$24.311,439,900
2006-01-17$24.43$24.43976,800
2006-01-13$24.43$24.431,989,900
2006-01-12$24.40$24.402,974,700
2006-01-11$24.77$24.773,123,500
2006-01-10$25.04$25.043,862,300
2006-01-09$25.22$25.227,313,400
2006-01-06$23.11$23.114,145,800
2006-01-05$22.58$22.585,759,800
2006-01-04$21.95$21.9513,320,500
2006-01-03$20.52$20.524,499,700