Alkermes plc (ALKS)
NASDAQ: ALKS · Real-Time Price · USD
43.39
-3.32 (-7.11%)
At close: Sep 18, 2026, 4:00 PM EDT
43.39
0.00 (0.01%)
After-hours: Sep 18, 2026, 7:30 PM EDT

Alkermes Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Sep 18, 202646.5146.5343.2743.3943.39-7.11%6,739,528
Sep 17, 202647.1047.4046.4146.7146.711.39%1,397,694
Sep 16, 202646.6447.2645.7946.0746.070.09%1,739,909
Sep 15, 202645.7346.1444.6346.0346.030.44%1,926,287
Sep 14, 202646.6046.6045.6645.8345.83-0.30%1,902,260
Sep 11, 202646.7546.7545.7345.9745.97-0.30%1,222,025
Sep 10, 202644.9846.1144.7546.1146.111.56%1,193,873
Sep 9, 202645.2445.6144.7245.4045.40-0.20%1,366,568
Sep 8, 202645.2046.5344.6345.4945.49-1.32%1,354,365
Sep 4, 202646.1446.9345.8046.1046.10-1.66%1,051,929
Sep 3, 202648.0148.2946.7146.8846.88-1.76%898,117
Sep 2, 202647.7048.7446.6847.7247.721.10%1,417,652
Sep 1, 202647.0047.3446.6547.2047.200.45%1,191,257
Aug 31, 202647.2547.5646.4646.9946.99-0.89%1,398,666
Aug 28, 202648.8248.8247.2547.4147.41-3.05%1,429,292
Aug 27, 202648.7249.3348.1048.9048.90-0.53%2,119,395
Aug 26, 202649.2349.3548.4649.1649.16-0.10%660,876
Aug 25, 202648.9449.5848.8749.2149.210.70%1,127,442
Aug 24, 202648.0549.0347.6448.8748.871.12%1,296,669
Aug 21, 202648.0548.6747.3348.3348.330.65%939,640
Aug 20, 202649.3749.8647.9348.0248.02-4.30%1,635,207
Aug 19, 202651.2651.2950.0850.1850.181.41%1,544,219
Aug 18, 202650.1050.4249.4649.4849.48-0.74%970,918
Aug 17, 202648.9050.0848.6249.8549.851.61%764,040
Aug 14, 202649.3750.0248.6549.0649.06-0.79%1,267,828
Aug 13, 202651.6651.6649.2149.4549.45-1.65%1,546,632
Aug 12, 202649.2250.5348.5050.2850.282.17%1,315,646
Aug 11, 202649.9250.1448.9749.2149.21-0.38%1,373,601
Aug 10, 202648.3949.8148.3949.4049.400.47%1,511,275
Aug 7, 202649.0549.9048.6749.1749.171.65%1,110,968
Aug 6, 202649.6150.4048.2148.3748.37-2.50%1,569,088
Aug 5, 202650.2050.8549.2349.6149.61-0.12%1,706,769
Aug 4, 202649.7350.3649.0049.6749.670.28%1,430,842
Aug 3, 202648.5850.7148.1949.5349.531.10%1,835,762
Jul 31, 202649.6349.8348.5248.9948.99-2.08%1,624,487
Jul 30, 202647.8550.3447.7150.0350.033.50%2,303,338
Jul 29, 202650.5050.7247.6648.3448.34-4.28%4,149,635
Jul 28, 202650.4352.5149.3350.5050.50-4.23%2,875,996
Jul 27, 202652.8753.8552.4852.7352.73-0.30%1,402,922
Jul 24, 202653.3853.8852.4852.8952.89-0.15%1,288,506
Jul 23, 202652.1353.5451.6952.9752.970.74%1,488,265
Jul 22, 202652.5553.2752.3552.5852.58-0.51%1,837,063
Jul 21, 202651.5853.0451.2552.8552.852.18%1,179,221
Jul 20, 202652.9653.2451.7051.7251.72-1.90%941,838
Jul 17, 202651.0652.7950.9452.7252.721.50%1,713,653
Jul 16, 202651.7753.5251.5551.9451.94-0.08%1,843,684
Jul 15, 202651.6452.2050.4951.9851.980.74%1,556,270
Jul 14, 202651.9852.1750.6651.6051.60-0.52%1,776,619
Jul 13, 202651.0752.0050.5451.8751.87-0.13%1,583,838
Jul 10, 202653.3653.3851.8651.9451.94-3.42%1,691,454