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 — 2001

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2001-12-31$26.36$26.36740,600
2001-12-28$26.45$26.45279,300
2001-12-27$26.07$26.07402,500
2001-12-26$26.47$26.47297,400
2001-12-24$25.79$25.79265,300
2001-12-21$25.91$25.91874,800
2001-12-20$24.90$24.90611,600
2001-12-19$25.20$25.201,358,500
2001-12-18$25.06$25.061,097,500
2001-12-17$24.65$24.65890,800
2001-12-14$23.91$23.911,105,400
2001-12-13$24.05$24.05847,400
2001-12-12$23.65$23.651,742,800
2001-12-11$23.01$23.016,073,100
2001-12-10$24.34$24.341,000,000
2001-12-07$24.35$24.35547,200
2001-12-06$25.44$25.441,233,400
2001-12-05$25.00$25.001,932,500
2001-12-04$23.50$23.50876,800
2001-12-03$23.55$23.55484,600
2001-11-30$24.38$24.38629,600
2001-11-29$24.60$24.60492,500
2001-11-28$24.30$24.30407,200
2001-11-27$25.68$25.68533,900
2001-11-26$25.80$25.80895,000
2001-11-23$25.41$25.41362,700
2001-11-21$25.50$25.50678,400
2001-11-20$25.98$25.98359,200
2001-11-19$27.10$27.10619,700
2001-11-16$25.12$25.12691,000
2001-11-15$25.73$25.73333,500
2001-11-14$26.14$26.14484,900
2001-11-13$26.83$26.83433,300
2001-11-12$25.69$25.69358,000
2001-11-09$26.06$26.06454,000
2001-11-08$26.10$26.10439,900
2001-11-07$27.47$27.47648,500
2001-11-06$28.19$28.191,254,700
2001-11-05$27.50$27.50727,900
2001-11-02$25.40$25.40481,500
2001-11-01$25.65$25.65636,500
2001-10-31$25.65$25.65773,700
2001-10-30$26.35$26.35534,800
2001-10-29$26.00$26.00564,400
2001-10-26$27.23$27.231,261,000
2001-10-25$27.06$27.06849,300
2001-10-24$25.10$25.10822,400
2001-10-23$24.27$24.27562,200
2001-10-22$23.80$23.80743,100
2001-10-19$23.34$23.34572,100
2001-10-18$23.45$23.45329,900
2001-10-17$22.68$22.68766,600
2001-10-16$23.58$23.58433,100
2001-10-15$23.40$23.40267,900
2001-10-12$22.78$22.78418,000
2001-10-11$23.41$23.41662,200
2001-10-10$22.03$22.03690,900
2001-10-09$20.11$20.11374,700
2001-10-08$19.95$19.95196,300
2001-10-05$20.28$20.28517,600
2001-10-04$20.90$20.90626,600
2001-10-03$20.60$20.60560,900
2001-10-02$20.10$20.10384,700
2001-10-01$19.07$19.07946,300
2001-09-28$19.58$19.58472,100
2001-09-27$19.31$19.31849,200
2001-09-26$18.10$18.10597,600
2001-09-25$17.95$17.95915,600
2001-09-24$17.50$17.501,197,200
2001-09-21$18.05$18.051,802,500
2001-09-20$19.33$19.33744,900
2001-09-19$19.37$19.372,254,900
2001-09-18$20.33$20.33607,000
2001-09-17$21.76$21.76598,800
2001-09-10$23.80$23.80802,000
2001-09-07$23.62$23.62517,900
2001-09-06$24.72$24.721,040,300
2001-09-05$25.35$25.35527,400
2001-09-04$26.37$26.371,113,800
2001-08-31$25.60$25.60432,500
2001-08-30$26.04$26.04365,300
2001-08-29$26.97$26.97493,900
2001-08-28$26.96$26.96365,300
2001-08-27$28.30$28.30399,100
2001-08-24$28.20$28.20525,500
2001-08-23$27.90$27.90352,100
2001-08-22$27.10$27.10258,400
2001-08-21$26.00$26.00805,200
2001-08-20$26.04$26.04678,300
2001-08-17$26.01$26.01151,300
2001-08-16$27.18$27.18226,300
2001-08-15$26.84$26.84261,200
2001-08-14$27.57$27.57353,700
2001-08-13$27.57$27.57461,300
2001-08-10$26.37$26.37235,500
2001-08-09$26.08$26.08761,300
2001-08-08$26.30$26.30352,500
2001-08-07$27.00$27.00291,300
2001-08-06$27.21$27.21214,700
2001-08-03$27.31$27.31243,500
2001-08-02$27.22$27.22363,600
2001-08-01$27.56$27.56544,600
2001-07-31$28.50$28.50528,200
2001-07-30$28.43$28.43281,700
2001-07-27$28.32$28.32325,500
2001-07-26$27.86$27.86323,800
2001-07-25$26.48$26.48321,100
2001-07-24$25.68$25.68884,200
2001-07-23$25.93$25.93393,900
2001-07-20$26.00$26.00436,100
2001-07-19$25.37$25.37170,200
2001-07-18$25.78$25.78632,300
2001-07-17$26.15$26.151,859,700
2001-07-16$26.64$26.64820,100
2001-07-13$30.34$30.34622,700
2001-07-12$28.67$28.671,428,100
2001-07-11$28.88$28.88949,200
2001-07-10$31.05$31.05524,400
2001-07-09$32.50$32.50337,100
2001-07-06$31.56$31.56457,100
2001-07-05$32.94$32.94485,600
2001-07-03$35.27$35.27228,800
2001-07-02$34.32$34.321,059,700
2001-06-29$35.10$35.10634,400
2001-06-28$35.15$35.15706,300
2001-06-27$33.91$33.91380,900
2001-06-26$34.03$34.03609,000
2001-06-25$35.00$35.00960,000
2001-06-22$37.10$37.10561,700
2001-06-21$37.00$37.00801,300
2001-06-20$36.42$36.42716,800
2001-06-19$35.00$35.00599,200
2001-06-18$34.00$34.00492,600
2001-06-15$34.65$34.65521,600
2001-06-14$33.30$33.301,248,300
2001-06-13$34.13$34.13980,000
2001-06-12$32.00$32.00612,800
2001-06-11$32.99$32.99390,300
2001-06-08$34.65$34.65305,400
2001-06-07$35.47$35.47409,200
2001-06-06$34.30$34.30644,700
2001-06-05$35.92$35.922,150,500
2001-06-04$32.18$32.18312,800
2001-06-01$31.71$31.71325,600
2001-05-31$30.27$30.27324,700
2001-05-30$29.39$29.39455,100
2001-05-29$30.38$30.38376,900
2001-05-25$30.46$30.46310,300
2001-05-24$31.18$31.18705,600
2001-05-23$31.09$31.09738,500
2001-05-22$32.10$32.101,345,900
2001-05-21$31.70$31.701,078,300
2001-05-18$29.92$29.92345,200
2001-05-17$29.89$29.89767,900
2001-05-16$28.32$28.32465,800
2001-05-15$26.79$26.79371,000
2001-05-14$26.98$26.98356,500
2001-05-11$28.30$28.30627,800
2001-05-10$29.37$29.37434,800
2001-05-09$30.91$30.91434,300
2001-05-08$31.32$31.32310,700
2001-05-07$31.30$31.30289,700
2001-05-04$30.49$30.49399,100
2001-05-03$30.70$30.70782,100
2001-05-02$30.90$30.901,094,700
2001-05-01$31.17$31.171,248,600
2001-04-30$30.64$30.64873,400
2001-04-27$30.25$30.25855,000
2001-04-26$29.80$29.801,708,600
2001-04-25$26.65$26.65413,600
2001-04-24$24.73$24.73649,100
2001-04-23$26.56$26.56565,000
2001-04-20$28.94$28.94342,900
2001-04-19$28.85$28.85398,600
2001-04-18$27.66$27.661,097,600
2001-04-17$25.62$25.621,166,700
2001-04-16$25.55$25.55476,200
2001-04-12$26.10$26.10561,100
2001-04-11$25.61$25.61550,900
2001-04-10$26.10$26.10662,600
2001-04-09$24.83$24.83655,500
2001-04-06$23.50$23.50780,500
2001-04-05$24.13$24.13988,300
2001-04-04$21.06$21.06571,900
2001-04-03$20.44$20.441,641,500
2001-04-02$22.56$22.561,969,500
2001-03-30$21.94$21.94843,500
2001-03-29$21.13$21.13623,800
2001-03-28$21.56$21.56767,900
2001-03-27$21.63$21.631,545,800
2001-03-26$22.38$22.38989,900
2001-03-23$22.13$22.131,038,200
2001-03-22$20.50$20.501,893,000
2001-03-21$22.88$22.881,090,200
2001-03-20$24.88$24.881,065,000
2001-03-19$25.75$25.75430,700
2001-03-16$23.06$23.06678,200
2001-03-15$24.25$24.25247,300
2001-03-14$24.06$24.06453,500
2001-03-13$23.38$23.381,059,000
2001-03-12$22.88$22.88504,200
2001-03-09$25.88$25.88422,000
2001-03-08$27.25$27.251,208,600
2001-03-07$28.50$28.50235,000
2001-03-06$29.50$29.50280,400
2001-03-05$30.13$30.13274,000
2001-03-02$31.00$31.00424,500
2001-03-01$29.63$29.63537,100
2001-02-28$31.00$31.00483,200
2001-02-27$31.38$31.381,196,600
2001-02-26$32.06$32.06837,100
2001-02-23$30.19$30.19847,500
2001-02-22$29.13$29.13996,700
2001-02-21$31.94$31.94881,600
2001-02-20$31.94$31.94876,400
2001-02-16$31.94$31.94540,900
2001-02-15$32.50$32.501,068,400
2001-02-14$30.36$30.363,886,500
2001-02-13$30.75$30.754,012,900
2001-02-12$30.06$30.06521,600
2001-02-09$28.63$28.63242,500
2001-02-08$28.75$28.75335,100
2001-02-07$28.25$28.25566,000
2001-02-06$28.50$28.50874,800
2001-02-05$26.31$26.31684,700
2001-02-02$26.44$26.441,618,900
2001-02-01$26.63$26.63717,100
2001-01-31$26.50$26.50518,300
2001-01-30$26.31$26.31477,400
2001-01-29$28.31$28.31767,600
2001-01-26$26.88$26.88863,800
2001-01-25$24.88$24.88582,300
2001-01-24$26.25$26.25947,700
2001-01-23$26.00$26.001,308,000
2001-01-22$23.75$23.75841,100
2001-01-19$23.38$23.38722,400
2001-01-18$23.75$23.751,892,200
2001-01-17$24.31$24.311,003,600
2001-01-16$24.94$24.94590,100
2001-01-12$25.50$25.50434,600
2001-01-11$26.06$26.06972,400
2001-01-10$25.00$25.00975,100
2001-01-09$23.44$23.44728,600
2001-01-08$23.00$23.00993,000
2001-01-05$24.25$24.251,083,700
2001-01-04$26.56$26.56886,000
2001-01-03$27.38$27.381,052,600
2001-01-02$27.63$27.63935,800