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 — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2025-12-31$27.98$27.981,206,600
2025-12-30$27.81$27.811,230,900
2025-12-29$28.01$28.01923,300
2025-12-26$28.49$28.49760,100
2025-12-24$28.52$28.52962,400
2025-12-23$28.49$28.49957,600
2025-12-22$28.63$28.631,366,000
2025-12-19$28.45$28.454,281,500
2025-12-18$27.81$27.811,502,200
2025-12-17$28.04$28.041,929,900
2025-12-16$28.06$28.061,696,500
2025-12-15$28.17$28.171,992,000
2025-12-12$28.50$28.501,620,200
2025-12-11$29.17$29.171,567,400
2025-12-10$28.62$28.622,209,100
2025-12-09$28.44$28.442,089,000
2025-12-08$29.41$29.411,709,000
2025-12-05$29.52$29.521,810,100
2025-12-04$29.30$29.301,376,100
2025-12-03$29.53$29.531,454,400
2025-12-02$28.97$28.971,837,800
2025-12-01$28.90$28.901,539,800
2025-11-28$29.58$29.581,120,400
2025-11-26$29.72$29.722,530,300
2025-11-25$28.99$28.991,601,900
2025-11-24$28.20$28.202,490,200
2025-11-21$28.61$28.612,039,000
2025-11-20$28.19$28.191,433,100
2025-11-19$28.69$28.691,725,400
2025-11-18$29.26$29.263,103,500
2025-11-17$29.33$29.332,869,200
2025-11-14$29.04$29.045,749,500
2025-11-13$31.01$31.013,354,200
2025-11-12$31.41$31.418,561,600
2025-11-11$33.81$33.811,888,000
2025-11-10$32.65$32.651,748,700
2025-11-07$32.89$32.891,990,400
2025-11-06$31.68$31.682,124,200
2025-11-05$31.07$31.076,993,100
2025-11-04$30.39$30.392,317,200
2025-11-03$30.17$30.172,452,700
2025-10-31$30.70$30.702,020,600
2025-10-30$30.82$30.822,269,000
2025-10-29$31.45$31.452,348,000
2025-10-28$31.00$31.004,965,600
2025-10-27$29.72$29.722,928,200
2025-10-24$29.80$29.802,079,700
2025-10-23$30.04$30.044,317,100
2025-10-22$31.09$31.094,325,800
2025-10-21$31.45$31.451,633,300
2025-10-20$30.98$30.981,649,000
2025-10-17$30.26$30.262,042,400
2025-10-16$30.80$30.802,284,600
2025-10-15$32.23$32.231,315,900
2025-10-14$31.94$31.942,977,600
2025-10-13$32.17$32.171,691,700
2025-10-10$31.21$31.212,759,200
2025-10-09$31.38$31.381,562,700
2025-10-08$31.51$31.511,084,300
2025-10-07$30.95$30.951,054,700
2025-10-06$30.99$30.991,619,200
2025-10-03$31.06$31.061,687,500
2025-10-02$31.26$31.261,593,900
2025-10-01$30.65$30.651,592,400
2025-09-30$30.00$30.002,299,100
2025-09-29$29.04$29.042,745,800
2025-09-26$27.89$27.892,340,100
2025-09-25$27.13$27.131,086,500
2025-09-24$27.81$27.811,120,300
2025-09-23$27.75$27.751,740,300
2025-09-22$27.63$27.632,002,600
2025-09-19$27.79$27.793,309,700
2025-09-18$28.55$28.551,368,700
2025-09-17$27.87$27.872,246,100
2025-09-16$27.39$27.392,141,600
2025-09-15$26.52$26.521,960,300
2025-09-12$26.97$26.972,480,900
2025-09-11$27.71$27.711,655,500
2025-09-10$26.93$26.932,651,000
2025-09-09$27.85$27.853,692,400
2025-09-08$28.45$28.455,511,400
2025-09-05$29.94$29.942,502,200
2025-09-04$28.92$28.921,974,900
2025-09-03$30.00$30.003,091,800
2025-09-02$29.40$29.401,365,600
2025-08-29$28.97$28.971,426,700
2025-08-28$28.93$28.931,174,900
2025-08-27$29.25$29.251,235,600
2025-08-26$28.98$28.981,235,600
2025-08-25$29.00$29.001,125,100
2025-08-22$29.75$29.751,386,800
2025-08-21$29.06$29.06848,300
2025-08-20$28.97$28.97810,300
2025-08-19$28.85$28.852,332,700
2025-08-18$28.12$28.121,658,300
2025-08-15$29.05$29.051,590,900
2025-08-14$28.26$28.261,007,700
2025-08-13$28.63$28.631,312,400
2025-08-12$27.43$27.431,019,200
2025-08-11$26.54$26.541,156,900
2025-08-08$26.71$26.711,371,400
2025-08-07$26.60$26.601,085,700
2025-08-06$26.55$26.551,117,900
2025-08-05$26.60$26.601,829,100
2025-08-04$26.64$26.641,281,300
2025-08-01$26.55$26.551,587,000
2025-07-31$26.49$26.492,234,800
2025-07-30$27.93$27.935,149,800
2025-07-29$27.00$27.003,298,200
2025-07-28$26.15$26.152,173,000
2025-07-25$26.13$26.131,694,500
2025-07-24$26.53$26.531,427,600
2025-07-23$27.19$27.191,939,300
2025-07-22$27.03$27.032,952,100
2025-07-21$26.66$26.666,031,400
2025-07-18$29.22$29.221,398,200
2025-07-17$29.36$29.361,147,000
2025-07-16$29.20$29.201,659,600
2025-07-15$28.85$28.851,404,300
2025-07-14$29.69$29.692,303,700
2025-07-11$30.28$30.281,483,300
2025-07-10$30.46$30.461,380,600
2025-07-09$29.98$29.982,037,700
2025-07-08$29.38$29.381,591,600
2025-07-07$29.23$29.232,149,300
2025-07-03$28.85$28.851,122,200
2025-07-02$29.00$29.002,165,000
2025-07-01$28.99$28.991,890,600
2025-06-30$28.61$28.611,386,700
2025-06-27$28.81$28.812,935,300
2025-06-26$28.83$28.831,800,000
2025-06-25$28.90$28.901,211,400
2025-06-24$29.35$29.351,761,200
2025-06-23$29.26$29.261,484,600
2025-06-20$29.09$29.093,628,900
2025-06-18$29.33$29.331,743,400
2025-06-17$29.77$29.772,491,700
2025-06-16$29.42$29.421,791,700
2025-06-13$29.83$29.832,207,100
2025-06-12$30.78$30.781,592,900
2025-06-11$31.20$31.201,294,900
2025-06-10$31.06$31.061,002,700
2025-06-09$31.14$31.141,535,400
2025-06-06$31.71$31.711,125,400
2025-06-05$31.00$31.001,034,400
2025-06-04$31.54$31.54955,200
2025-06-03$31.27$31.271,144,500
2025-06-02$31.29$31.291,369,500
2025-05-30$30.61$30.611,753,400
2025-05-29$30.25$30.251,647,200
2025-05-28$29.90$29.902,575,400
2025-05-27$29.90$29.902,889,700
2025-05-23$29.35$29.352,005,500
2025-05-22$30.05$30.05694,700
2025-05-21$30.53$30.531,007,700
2025-05-20$31.67$31.671,687,000
2025-05-19$31.45$31.45621,200
2025-05-16$31.42$31.42992,700
2025-05-15$31.21$31.21725,900
2025-05-14$30.62$30.621,179,800
2025-05-13$30.84$30.841,122,200
2025-05-12$31.27$31.271,274,100
2025-05-09$30.13$30.131,517,100
2025-05-08$30.38$30.382,341,900
2025-05-07$30.38$30.381,464,600
2025-05-06$30.36$30.361,591,400
2025-05-05$31.40$31.401,488,900
2025-05-02$31.78$31.783,455,800
2025-05-01$30.58$30.582,935,400
2025-04-30$28.77$28.772,422,900
2025-04-29$28.77$28.771,871,800
2025-04-28$27.91$27.911,517,300
2025-04-25$27.84$27.841,206,300
2025-04-24$27.67$27.671,968,700
2025-04-23$27.15$27.151,790,800
2025-04-22$27.11$27.111,967,100
2025-04-21$27.00$27.001,864,800
2025-04-17$27.00$27.001,699,400
2025-04-16$27.20$27.202,360,700
2025-04-15$27.94$27.942,073,200
2025-04-14$27.54$27.541,764,400
2025-04-11$27.00$27.001,741,300
2025-04-10$26.59$26.592,581,200
2025-04-09$28.81$28.813,957,200
2025-04-08$28.19$28.192,041,000
2025-04-07$29.49$29.492,113,900
2025-04-04$30.06$30.062,206,400
2025-04-03$31.66$31.661,436,800
2025-04-02$32.65$32.651,134,200
2025-04-01$32.53$32.531,465,200
2025-03-31$33.02$33.021,824,700
2025-03-28$33.21$33.21922,400
2025-03-27$33.53$33.531,096,800
2025-03-26$33.69$33.691,451,100
2025-03-25$33.88$33.881,407,700
2025-03-24$34.79$34.791,303,600
2025-03-21$34.60$34.604,662,900
2025-03-20$33.92$33.921,267,800
2025-03-19$34.34$34.341,652,400
2025-03-18$34.37$34.37996,700
2025-03-17$34.37$34.37939,400
2025-03-14$34.03$34.031,990,000
2025-03-13$33.62$33.621,549,300
2025-03-12$33.41$33.411,353,600
2025-03-11$34.26$34.262,713,300
2025-03-10$35.24$35.241,863,900
2025-03-07$34.35$34.351,896,000
2025-03-06$34.65$34.651,415,200
2025-03-05$35.28$35.281,418,000
2025-03-04$35.40$35.402,385,000
2025-03-03$34.11$34.111,498,100
2025-02-28$34.33$34.331,785,500
2025-02-27$34.04$34.041,322,500
2025-02-26$34.80$34.801,142,300
2025-02-25$34.93$34.931,790,600
2025-02-24$35.52$35.521,701,100
2025-02-21$35.32$35.321,062,600
2025-02-20$35.50$35.501,279,400
2025-02-19$35.84$35.841,680,600
2025-02-18$35.90$35.902,196,600
2025-02-14$35.89$35.892,626,800
2025-02-13$36.00$36.004,006,600
2025-02-12$33.50$33.503,573,800
2025-02-11$31.96$31.964,478,900
2025-02-10$31.23$31.231,751,600
2025-02-07$31.57$31.572,081,700
2025-02-06$31.39$31.391,468,300
2025-02-05$31.47$31.471,150,100
2025-02-04$31.30$31.301,131,800
2025-02-03$30.76$30.761,270,300
2025-01-31$31.53$31.531,934,100
2025-01-30$31.91$31.91984,000
2025-01-29$31.56$31.56829,800
2025-01-28$31.25$31.251,692,700
2025-01-27$31.52$31.521,404,200
2025-01-24$31.19$31.191,665,900
2025-01-23$31.75$31.752,317,800
2025-01-22$30.21$30.211,119,100
2025-01-21$30.10$30.101,476,000
2025-01-17$29.47$29.471,098,400
2025-01-16$29.75$29.752,240,200
2025-01-15$29.05$29.051,336,500
2025-01-14$28.50$28.501,198,800
2025-01-13$28.35$28.351,100,700
2025-01-10$28.08$28.081,289,200
2025-01-08$28.42$28.421,614,000
2025-01-07$28.54$28.541,370,100
2025-01-06$28.47$28.471,481,200
2025-01-03$29.04$29.041,187,700
2025-01-02$28.75$28.751,090,300