Alkermes plc (ALKS)
Showing Closing Date Range from Oct 14, 2025 to Oct 14, 2026 compared to Oct 13, 2024 to Oct 13, 2025.
Compare Last 12 Months with Previous Period
Investor Relations:alkermes.com
Current Period Close
$39.08
Oct 14, 2025 - Oct 14, 2026
Previous Period Close
$32.17
Oct 13, 2024 - Oct 13, 2025
Net Comparison Delta
+$6.91 (+21.48%)
Relative performance vs prior benchmark
Historical Quotes & Breakdown(251 dates)
| Current Date | Current Close | Previous Date | Previous Close | Delta (%) |
|---|---|---|---|---|
| Oct 14, 2026 | $39.08 | - | - | - |
| Oct 13, 2026 | $39.73 | Oct 13, 2025 | $32.17 | +23.50% |
| Oct 12, 2026 | $40.26 | Oct 10, 2025 | $31.21 | +29.00% |
| Oct 09, 2026 | $40.61 | Oct 09, 2025 | $31.38 | +29.41% |
| Oct 08, 2026 | $40.11 | Oct 08, 2025 | $31.51 | +27.29% |
| Oct 07, 2026 | $41.45 | Oct 07, 2025 | $30.95 | +33.91% |
| Oct 06, 2026 | $41.65 | Oct 06, 2025 | $30.99 | +34.40% |
| Oct 05, 2026 | $42.76 | Oct 03, 2025 | $31.06 | +37.67% |
| Oct 02, 2026 | $41.75 | Oct 02, 2025 | $31.26 | +33.56% |
| Oct 01, 2026 | $40.93 | Oct 01, 2025 | $30.65 | +33.52% |
| Sep 30, 2026 | $40.52 | Sep 30, 2025 | $30.00 | +35.07% |
| Sep 29, 2026 | $40.80 | Sep 29, 2025 | $29.04 | +40.50% |
| Sep 28, 2026 | $40.15 | Sep 26, 2025 | $27.89 | +43.96% |
| Sep 25, 2026 | $40.85 | Sep 25, 2025 | $27.13 | +50.57% |
| Sep 23, 2026 | $42.13 | Sep 24, 2025 | $27.81 | +51.49% |
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