Alkermes logo
Alkermes plc (ALKS)
NASDAQ: ALKS · Real-Time Price · USD
40.61
+0.50 (1.25%)
At close: Oct 9, 2026, 4:00 PM EDT
40.65
+0.04 (0.10%)
After-hours: Oct 9, 2026, 7:30 PM EDT

Alkermes Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Oct 9, 202640.1840.8739.9940.6140.611.25%1,626,913
Oct 8, 202641.1041.2639.1140.1140.11-3.22%3,237,353
Oct 7, 202641.2842.0641.1741.4541.45-0.49%1,759,222
Oct 6, 202642.6442.7141.2441.6541.65-2.60%1,521,402
Oct 5, 202642.0743.2241.6742.7642.762.42%2,968,767
Oct 2, 202641.0341.9640.3241.7541.752.98%2,423,455
Oct 1, 202640.0041.4139.9940.5440.540.05%2,626,368
Sep 30, 202640.9440.9439.9240.5240.52-0.69%2,527,215
Sep 29, 202639.8440.9039.8440.8040.801.62%2,686,816
Sep 28, 202640.7140.9740.0440.1540.15-1.71%2,356,249
Sep 25, 202640.9441.1240.4940.8540.850.15%2,588,014
Sep 24, 202642.5542.5540.5940.7940.79-3.18%2,843,413
Sep 23, 202643.2043.6241.2342.1342.13-2.68%2,475,683
Sep 22, 202644.3944.5343.0843.2943.29-2.01%2,310,733
Sep 21, 202644.2744.7943.1144.1844.181.82%3,732,232
Sep 18, 202646.5146.5343.2743.3943.39-7.11%6,935,802
Sep 17, 202647.1047.4046.4146.7146.711.39%1,423,622
Sep 16, 202646.6447.2645.7946.0746.070.09%1,854,651
Sep 15, 202645.7346.1444.6346.0346.030.44%2,151,164
Sep 14, 202646.6046.6045.6645.8345.83-0.30%2,029,453
Sep 11, 202646.7546.7545.7345.9745.97-0.30%1,283,128
Sep 10, 202644.9846.1144.7546.1146.111.56%1,193,903
Sep 9, 202645.2445.6144.7245.4045.40-0.20%1,442,769
Sep 8, 202645.2046.5344.6345.4945.49-1.32%1,355,832
Sep 4, 202646.1446.9345.8046.1046.10-1.66%1,064,034
Sep 3, 202648.0148.2946.7146.8846.88-1.76%974,512
Sep 2, 202647.7048.7446.6847.7247.721.10%1,566,413
Sep 1, 202647.0047.3446.6547.2047.200.45%1,351,261
Aug 31, 202647.2547.5646.4646.9946.99-0.89%1,440,889
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