Alkermes plc (ALKS)
Showing Closing Date Range from Oct 2 to Oct 30, 2026 compared to Sep 3 to Oct 1, 2026.
Compare Last 28 Days with Previous Period
Investor Relations:alkermes.com
Current Period Close
$45.34
Oct 02, 2026 - Oct 30, 2026
Previous Period Close
$40.93
Sep 03, 2026 - Oct 01, 2026
Net Comparison Delta
+$4.42 (+10.79%)
Relative performance vs prior benchmark
Historical Quotes & Breakdown(21 dates)
| Current Date | Current Close | Previous Date | Previous Close | Delta (%) |
|---|---|---|---|---|
| Oct 30, 2026 | $45.34 | - | - | - |
| Oct 29, 2026 | $45.37 | - | - | - |
| Oct 28, 2026 | $45.25 | Oct 01, 2026 | $40.93 | +10.57% |
| Oct 27, 2026 | $44.32 | Sep 30, 2026 | $40.52 | +9.38% |
| Oct 26, 2026 | $44.44 | Sep 29, 2026 | $40.80 | +8.92% |
| Oct 23, 2026 | $43.63 | Sep 28, 2026 | $40.15 | +8.67% |
| Oct 22, 2026 | $44.18 | Sep 25, 2026 | $40.85 | +8.15% |
| Oct 21, 2026 | $43.48 | Sep 23, 2026 | $42.13 | +3.20% |
| Oct 20, 2026 | $44.11 | Sep 22, 2026 | $43.29 | +1.89% |
| Oct 19, 2026 | $42.97 | Sep 21, 2026 | $44.18 | -2.74% |
| Oct 16, 2026 | $41.22 | Sep 18, 2026 | $43.39 | -5.00% |
| Oct 15, 2026 | $40.10 | Sep 17, 2026 | $46.71 | -14.15% |
| Oct 14, 2026 | $39.08 | Sep 16, 2026 | $46.07 | -15.17% |
| Oct 13, 2026 | $39.73 | Sep 15, 2026 | $46.03 | -13.69% |
| Oct 12, 2026 | $40.26 | Sep 14, 2026 | $45.83 | -12.15% |
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