Alkermes plc (ALKS)
Showing Closing Date Range from Apr 29 to Oct 26, 2026 compared to Oct 30, 2025 to Apr 28, 2026.
Compare Last 6 Months with Previous Period
Investor Relations:alkermes.com
Current Period Close
$43.63
Apr 29, 2026 - Oct 26, 2026
Previous Period Close
$34.14
Oct 30, 2025 - Apr 28, 2026
Net Comparison Delta
+$9.49 (+27.80%)
Relative performance vs prior benchmark
Historical Quotes & Breakdown(123 dates)
| Current Date | Current Close | Previous Date | Previous Close | Delta (%) |
|---|---|---|---|---|
| Oct 23, 2026 | $43.63 | Apr 28, 2026 | $34.14 | +27.80% |
| Oct 22, 2026 | $44.18 | Apr 27, 2026 | $33.73 | +30.98% |
| Oct 21, 2026 | $43.48 | Apr 24, 2026 | $33.31 | +30.53% |
| Oct 20, 2026 | $44.11 | Apr 23, 2026 | $33.91 | +30.08% |
| Oct 19, 2026 | $42.97 | Apr 22, 2026 | $33.74 | +27.36% |
| Oct 16, 2026 | $41.22 | Apr 21, 2026 | $33.52 | +22.97% |
| Oct 15, 2026 | $40.10 | Apr 20, 2026 | $34.23 | +17.15% |
| Oct 14, 2026 | $39.08 | Apr 17, 2026 | $34.53 | +13.18% |
| Oct 13, 2026 | $39.73 | Apr 16, 2026 | $33.77 | +17.65% |
| Oct 12, 2026 | $40.26 | Apr 15, 2026 | $33.22 | +21.19% |
| Oct 09, 2026 | $40.61 | Apr 14, 2026 | $33.87 | +19.90% |
| Oct 08, 2026 | $40.11 | Apr 13, 2026 | $33.75 | +18.84% |
| Oct 07, 2026 | $41.45 | Apr 10, 2026 | $33.36 | +24.24% |
| Oct 06, 2026 | $41.65 | Apr 09, 2026 | $34.92 | +19.27% |
| Oct 05, 2026 | $42.76 | Apr 08, 2026 | $34.77 | +22.98% |
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