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 — 2019

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2019-12-31$20.40$20.40757,100——
2019-12-30$20.13$20.131,052,500——
2019-12-27$20.43$20.43993,200——
2019-12-26$20.75$20.75609,400——
2019-12-24$21.31$21.31423,100——
2019-12-23$21.10$21.10870,300——
2019-12-20$20.92$20.922,201,900——
2019-12-19$21.06$21.061,358,200——
2019-12-18$20.40$20.401,413,700——
2019-12-17$20.55$20.551,771,400——
2019-12-16$21.10$21.10938,200——
2019-12-13$20.87$20.87840,300——
2019-12-12$21.25$21.251,144,000——
2019-12-11$20.93$20.931,427,600——
2019-12-10$21.57$21.571,587,900——
2019-12-09$21.74$21.741,648,800——
2019-12-06$20.95$20.951,053,900——
2019-12-05$20.65$20.651,562,100——
2019-12-04$21.23$21.231,211,700——
2019-12-03$20.26$20.261,641,400——
2019-12-02$20.57$20.571,544,200——
2019-11-29$21.02$21.02548,200——
2019-11-27$21.06$21.061,558,700——
2019-11-26$21.15$21.158,376,900——
2019-11-25$21.41$21.412,012,900——
2019-11-22$21.01$21.012,250,400——
2019-11-21$20.08$20.081,656,400——
2019-11-20$20.12$20.122,608,200——
2019-11-19$19.95$19.951,927,000——
2019-11-18$20.16$20.162,366,000——
2019-11-15$21.00$21.002,581,300——
2019-11-14$19.93$19.931,558,600——
2019-11-13$19.39$19.392,353,900——
2019-11-12$19.90$19.902,251,400——
2019-11-11$19.87$19.871,795,400——
2019-11-08$20.11$20.111,980,200——
2019-11-07$19.70$19.701,220,900——
2019-11-06$19.70$19.701,642,800——
2019-11-05$20.15$20.15904,800——
2019-11-04$20.19$20.19995,100——
2019-11-01$19.69$19.691,365,900——
2019-10-31$19.53$19.53964,300——
2019-10-30$19.97$19.971,653,200——
2019-10-29$20.02$20.021,454,500——
2019-10-28$19.55$19.551,624,700——
2019-10-25$19.48$19.481,320,400——
2019-10-24$19.50$19.501,747,800——
2019-10-23$18.65$18.654,045,000——
2019-10-22$18.45$18.451,456,400——
2019-10-21$18.41$18.411,363,300——
2019-10-18$18.15$18.151,900,800——
2019-10-17$17.73$17.73972,100——
2019-10-16$18.23$18.23829,100——
2019-10-15$18.41$18.41927,400——
2019-10-14$17.88$17.881,363,600——
2019-10-11$18.02$18.021,271,500——
2019-10-10$17.29$17.29930,000——
2019-10-09$18.22$18.22848,400——
2019-10-08$18.06$18.06784,200——
2019-10-07$18.31$18.311,239,900——
2019-10-04$18.49$18.49900,200——
2019-10-03$18.84$18.84662,700——
2019-10-02$18.63$18.63933,100——
2019-10-01$18.42$18.421,368,400——
2019-09-30$19.51$19.511,733,100——
2019-09-27$19.63$19.631,158,800——
2019-09-26$19.84$19.841,195,400——
2019-09-25$19.92$19.92931,400——
2019-09-24$20.28$20.28846,100——
2019-09-23$21.27$21.27882,200——
2019-09-20$21.20$21.203,617,300——
2019-09-19$21.22$21.221,245,800——
2019-09-18$21.48$21.481,017,100——
2019-09-17$21.43$21.43953,600——
2019-09-16$22.83$22.83907,900——
2019-09-13$22.30$22.301,755,500——
2019-09-12$22.62$22.62918,400——
2019-09-11$23.13$23.13944,900——
2019-09-10$22.10$22.101,169,700——
2019-09-09$20.70$20.70750,800——
2019-09-06$20.26$20.261,033,400——
2019-09-05$20.12$20.12983,200——
2019-09-04$19.84$19.84808,300——
2019-09-03$19.99$19.99779,100——
2019-08-30$20.98$20.98632,300——
2019-08-29$20.99$20.99680,300——
2019-08-28$20.55$20.55839,800——
2019-08-27$20.05$20.051,655,700——
2019-08-26$19.59$19.591,154,200——
2019-08-23$20.07$20.07922,100——
2019-08-22$21.37$21.37836,800——
2019-08-21$22.24$22.24620,500——
2019-08-20$21.77$21.77648,600——
2019-08-19$22.08$22.08721,200——
2019-08-16$21.65$21.65878,800——
2019-08-15$20.85$20.85674,900——
2019-08-14$21.17$21.171,120,400——
2019-08-13$21.95$21.95771,600——
2019-08-12$21.56$21.56731,400——
2019-08-09$22.19$22.19949,500——
2019-08-08$22.87$22.872,283,100——
2019-08-07$21.72$21.72986,400——
2019-08-06$21.33$21.331,261,200——
2019-08-05$21.48$21.482,168,200——
2019-08-02$22.30$22.301,083,400——
2019-08-01$23.00$23.001,579,500——
2019-07-31$23.16$23.161,924,000——
2019-07-30$23.17$23.172,812,900——
2019-07-29$21.86$21.862,551,900——
2019-07-26$20.56$20.561,839,300——
2019-07-25$20.89$20.893,169,800——
2019-07-24$22.89$22.891,249,400——
2019-07-23$22.80$22.801,024,000——
2019-07-22$22.83$22.83928,400——
2019-07-19$23.27$23.273,425,800——
2019-07-18$24.28$24.281,467,600——
2019-07-17$23.09$23.091,360,700——
2019-07-16$23.38$23.381,677,000——
2019-07-15$23.34$23.341,738,000——
2019-07-12$22.53$22.53941,700——
2019-07-11$22.94$22.941,304,900——
2019-07-10$23.06$23.061,421,000——
2019-07-09$22.70$22.701,191,000——
2019-07-08$22.38$22.381,732,600——
2019-07-05$22.72$22.72910,600——
2019-07-03$23.41$23.41728,200——
2019-07-02$22.91$22.911,195,800——
2019-07-01$22.85$22.85909,200——
2019-06-28$22.54$22.544,064,900——
2019-06-27$22.15$22.151,547,200——
2019-06-26$21.47$21.47888,400——
2019-06-25$21.78$21.781,096,100——
2019-06-24$21.61$21.611,069,500——
2019-06-21$22.59$22.593,312,200——
2019-06-20$22.41$22.411,015,000——
2019-06-19$22.33$22.331,337,000——
2019-06-18$22.24$22.242,276,900——
2019-06-17$22.18$22.181,673,100——
2019-06-14$21.89$21.89956,900——
2019-06-13$22.41$22.41710,700——
2019-06-12$22.65$22.65682,900——
2019-06-11$22.42$22.42589,700——
2019-06-10$22.77$22.771,302,300——
2019-06-07$22.83$22.83835,900——
2019-06-06$22.67$22.67899,700——
2019-06-05$23.40$23.401,715,900——
2019-06-04$23.60$23.601,454,200——
2019-06-03$22.42$22.421,338,600——
2019-05-31$21.54$21.542,243,500——
2019-05-30$22.03$22.031,647,300——
2019-05-29$22.50$22.501,657,900——
2019-05-28$23.21$23.211,307,800——
2019-05-24$23.95$23.95712,200——
2019-05-23$24.03$24.03896,900——
2019-05-22$25.04$25.04752,300——
2019-05-21$25.05$25.05912,200——
2019-05-20$24.54$24.54982,700——
2019-05-17$24.85$24.851,108,700——
2019-05-16$25.30$25.301,834,400——
2019-05-15$25.43$25.43779,200——
2019-05-14$25.60$25.601,564,300——
2019-05-13$25.15$25.151,246,600——
2019-05-10$26.30$26.301,505,100——
2019-05-09$26.83$26.831,049,900——
2019-05-08$27.31$27.31979,000——
2019-05-07$27.60$27.601,257,500——
2019-05-06$28.55$28.551,310,100——
2019-05-03$28.54$28.541,599,300——
2019-05-02$28.66$28.66920,800——
2019-05-01$28.50$28.501,273,500——
2019-04-30$30.32$30.321,418,400——
2019-04-29$30.28$30.281,132,900——
2019-04-26$30.52$30.521,438,400——
2019-04-25$30.31$30.313,547,600——
2019-04-24$34.75$34.75781,500——
2019-04-23$34.23$34.23932,400——
2019-04-22$33.67$33.67589,600——
2019-04-18$33.58$33.581,034,000——
2019-04-17$33.16$33.161,110,200——
2019-04-16$34.23$34.231,159,100——
2019-04-15$33.43$33.43812,200——
2019-04-12$34.22$34.221,011,500——
2019-04-11$35.91$35.911,200,100——
2019-04-10$35.82$35.821,700,700——
2019-04-09$36.03$36.031,431,900——
2019-04-08$37.33$37.331,258,500——
2019-04-05$37.16$37.161,015,100——
2019-04-04$35.89$35.89885,200——
2019-04-03$35.74$35.741,002,400——
2019-04-02$35.74$35.741,271,900——
2019-04-01$35.95$35.951,124,900——
2019-03-29$36.49$36.491,058,400——
2019-03-28$35.66$35.661,567,000——
2019-03-27$33.57$33.572,190,200——
2019-03-26$34.38$34.38725,300——
2019-03-25$33.38$33.38597,800——
2019-03-22$33.96$33.96925,100——
2019-03-21$34.94$34.94634,200——
2019-03-20$34.55$34.55613,200——
2019-03-19$35.01$35.01783,900——
2019-03-18$34.61$34.61761,700——
2019-03-15$34.02$34.021,055,000——
2019-03-14$33.17$33.17643,400——
2019-03-13$33.53$33.531,128,500——
2019-03-12$33.16$33.16508,500——
2019-03-11$33.16$33.16711,800——
2019-03-08$31.93$31.93627,100——
2019-03-07$32.63$32.63564,700——
2019-03-06$32.47$32.47773,200——
2019-03-05$33.36$33.36811,600——
2019-03-04$33.85$33.85787,200——
2019-03-01$34.44$34.44948,800——
2019-02-28$33.27$33.27983,700——
2019-02-27$34.21$34.21657,700——
2019-02-26$33.92$33.921,251,300——
2019-02-25$34.26$34.26851,200——
2019-02-22$33.43$33.43829,900——
2019-02-21$32.57$32.57602,500——
2019-02-20$33.35$33.35976,000——
2019-02-19$34.09$34.092,017,100——
2019-02-15$32.54$32.54970,600——
2019-02-14$32.50$32.501,164,600——
2019-02-13$32.92$32.92770,100——
2019-02-12$32.29$32.29670,600——
2019-02-11$31.38$31.381,097,300——
2019-02-08$30.85$30.85672,300——
2019-02-07$31.07$31.071,219,300——
2019-02-06$32.49$32.49764,500——
2019-02-05$33.71$33.71634,100——
2019-02-04$33.18$33.181,153,100——
2019-02-01$33.08$33.08767,800——
2019-01-31$32.87$32.87857,000——
2019-01-30$32.80$32.80706,600——
2019-01-29$32.66$32.66478,600——
2019-01-28$32.55$32.55716,300——
2019-01-25$34.07$34.07769,900——
2019-01-24$33.08$33.08548,900——
2019-01-23$32.44$32.44487,100——
2019-01-22$33.05$33.05663,200——
2019-01-18$34.14$34.141,060,700——
2019-01-17$33.82$33.82779,900——
2019-01-16$33.58$33.58833,100——
2019-01-15$33.04$33.04496,900——
2019-01-14$32.26$32.26691,800——
2019-01-11$32.51$32.51785,100——
2019-01-10$32.48$32.48796,800——
2019-01-09$32.21$32.21732,600——
2019-01-08$31.23$31.231,088,700——
2019-01-07$30.60$30.601,078,100——
2019-01-04$30.00$30.00874,900——
2019-01-03$28.40$28.40767,700——
2019-01-02$29.11$29.11741,200——