NASDAQ:ALKS | Stock Price History | 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.

Historical Stock Price

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-04$46.2881,810
2026-09-03$48.0561,795
2026-09-02$47.6980,871
2026-09-01$47.2679,844
2026-08-31$47.5367,159
2026-08-28$48.7771,629
2026-08-27$48.90$48.902,119,400$48.66243,011
2026-08-26$49.16$49.16660,900$49.3243,164
2026-08-25$49.21$49.211,127,400$49.5647,890
2026-08-24$48.87$48.871,296,500$47.9578,126
2026-08-21$48.33$48.33939,600$47.9752,432
2026-08-20$48.02$48.021,635,200$49.70128,702
2026-08-19$50.18$50.181,544,200$50.17129,251
2026-08-18$49.48$49.48970,900$50.0454,477
2026-08-17$49.85$49.85763,800$48.9046,568
2026-08-14$49.06$49.061,267,800$49.1678,651
2026-08-13$49.45$49.451,546,600$51.66124,673
2026-08-12$50.28$50.281,315,600$49.2880,380
2026-08-11$49.21$49.211,373,600$49.9958,789
2026-08-10$49.40$49.401,511,300$49.0556,084
2026-08-07$49.17$49.171,111,000$49.5770,829
2026-08-06$48.37$48.371,569,100$49.7393,068
2026-08-05$49.61$49.611,706,800$50.1598,428
2026-08-04$49.67$49.671,430,800$49.70100,935
2026-08-03$49.53$49.531,835,700$49.08104,544
2026-07-31$48.99$48.991,624,500$49.66110,064
2026-07-30$50.03$50.032,303,300$47.9191,094
2026-07-29$48.34$48.344,149,600$50.51351,820
2026-07-28$50.50$50.502,875,900$50.43171,654
2026-07-27$52.73$52.731,402,700$52.6385,100
2026-07-24$52.89$52.891,288,500$53.4165,506
2026-07-23$52.97$52.971,488,300$52.0897,801
2026-07-22$52.58$52.581,837,100$52.96139,631
2026-07-21$52.85$52.851,179,200$51.9273,480
2026-07-20$51.72$51.72941,800$52.8947,781
2026-07-17$52.72$52.721,713,700
2026-07-16$51.94$51.941,843,700
2026-07-15$51.98$51.981,556,300
2026-07-14$51.60$51.601,776,600
2026-07-13$51.87$51.871,583,800
2026-07-10$51.94$51.941,691,400
2026-07-09$53.78$53.781,630,500
2026-07-08$54.29$54.291,706,000
2026-07-07$55.22$55.221,719,300
2026-07-06$55.14$55.141,747,200
2026-07-02$54.58$54.581,653,700
2026-07-01$51.72$51.721,638,400
2026-06-30$52.40$52.402,958,500
2026-06-29$52.53$52.532,940,700
2026-06-26$55.08$55.087,563,400
2026-06-25$52.83$52.833,249,300
2026-06-24$50.45$50.453,726,600
2026-06-23$48.07$48.072,451,700
2026-06-22$46.02$46.023,227,500
2026-06-18$44.99$44.997,751,300
2026-06-17$44.51$44.511,417,800
2026-06-16$44.09$44.091,420,900
2026-06-15$44.36$44.361,822,100
2026-06-12$44.28$44.281,523,000
2026-06-11$44.92$44.922,261,100
2026-06-10$43.84$43.841,659,600
2026-06-09$44.29$44.292,533,300
2026-06-08$42.45$42.451,292,000
2026-06-05$42.80$42.801,312,000
2026-06-04$43.38$43.382,307,200
2026-06-03$42.76$42.762,000,500
2026-06-02$41.32$41.322,146,000
2026-06-01$42.27$42.272,406,100
2026-05-29$42.19$42.194,269,400
2026-05-28$39.94$39.942,913,200
2026-05-27$38.09$38.092,246,900
2026-05-26$37.35$37.351,122,900
2026-05-22$36.80$36.80907,800
2026-05-21$36.95$36.951,692,600
2026-05-20$36.98$36.981,817,900
2026-05-19$37.00$37.002,154,200
2026-05-18$37.19$37.191,571,900
2026-05-15$37.48$37.481,315,700
2026-05-14$38.36$38.361,740,000
2026-05-13$38.91$38.913,250,700
2026-05-12$38.29$38.294,026,500
2026-05-11$35.47$35.472,323,500
2026-05-08$34.99$34.992,616,400
2026-05-07$35.40$35.402,094,200
2026-05-06$35.32$35.322,960,700
2026-05-05$36.25$36.252,614,300
2026-05-04$34.17$34.172,860,300
2026-05-01$33.38$33.381,193,200
2026-04-30$33.71$33.711,652,300
2026-04-29$33.71$33.712,732,100
2026-04-28$34.14$34.141,734,800
2026-04-27$33.73$33.731,746,000
2026-04-24$33.31$33.31912,300
2026-04-23$33.91$33.911,109,400
2026-04-22$33.74$33.741,350,000
2026-04-21$33.52$33.521,259,400
2026-04-20$34.23$34.231,124,400
2026-04-17$34.53$34.532,228,900
2026-04-16$33.77$33.771,602,000
2026-04-15$33.22$33.221,640,400