Alkermes plc. options tape
These figures are updated after the US market closes, every trading day. For the live chain, go to CBOE's own page for ALKS.
Updated after the US market close on 9 October 2026, with Alkermes plc. at $40.65: open interest within 90 days was 8,764 call and 6,691 put contracts, a put/call ratio of 0.76; the day's volume was 44 calls and 5 puts (0.11). The most call open interest sits at the $55.00 strike (6,383 contracts) and the most put open interest at $44.00 (2,367). The at-the-money straddle for 16 October 2026, 4 days out, was priced at 6.1% of spot. For 20 November 2026, implied volatility was 60.9% at the put 5% below spot and 57.2% at the call 5% above, +3.7 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $55.00 | 6,383 |
| Puts | $44.00 | 2,367 |
The strike with the most open interest on each side, across expiries within 90 days.
Source
Official exchange quotes, updated after each US market close. Figures describe positioning; they are not a forecast.
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