Alkermes plc
Alkermes plc (ALKS) Historical Volatility
ALKS 30-day historical volatility is 24%. This ranks in the 3th percentile of readings over the past year.
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Tracking ALKS historical volatility helps you see how much Alkermes plc's stock price has actually moved over past periods, giving you a baseline to judge whether current option premiums are fair, cheap, or expensive. While implied volatility tells you what the market expects, Alkermes plc's HV tells you what really happened. Use our scanner to monitor ALKS 30 day historical volatility alongside longer lookback windows and spot the moments when realized and implied diverge.
Historical volatility is the annualized standard deviation of an underlying's past returns, typically measured over rolling windows like 10, 20, 30, or 60 days. The ALKS 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing Alkermes plc's HV to its implied volatility reveals the volatility risk premium — when IV sits well above HV, option sellers tend to have an edge; when HV runs hot relative to IV, buyers may be underpaying for movement.
Alkermes plc, a biopharmaceutical company, researches, develops, and commercializes pharmaceutical products to address unmet medical needs of patients in various therapeutic areas in the United States, Ireland, and internationally. Its marketed products include ARISTADA, an intramuscular injectable suspension for the treatment of schizophrenia; VIVITROL for the treatment of alcohol and prevention of opioid dependence; RISPERDAL CONSTA for the treatment of schizophrenia and bipolar I disorder; INVEGA SUSTENNA for the treatment of schizophrenia and schizoaffective disorder; XEPLION, INVEGA TRINZA, and TREVICTA to treat schizophrenia and schizoaffective; and VUMERITY for the treatment of relapsing forms of multiple sclerosis in adults, including clinically isolated syndrome, relapsing-remitting and active secondary progressive diseases.
The company is also developing LYBALVI, an oral atypical antipsychotic drug candidate for the treatment of adults with schizophrenia and bipolar I disorder; and nemvaleukin alfa, an engineered fusion protein to expand tumor-killing immune cells and to avoid the activation of immunosuppressive cells. It has collaboration agreements primarily with Janssen Pharmaceutica N.V., Janssen Pharmaceutica Inc, and Janssen Pharmaceutica International. Alkermes plc was founded in 1987 and is headquartered in Dublin, Ireland.
Sizing a long premium trade, modeling a covered call, or hunting volatility arbitrage all come back to one question: how much has the stock actually moved? Our scanner puts Alkermes plc's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where ALKS HV is running hot, cold, or in line. Make the ALKS 30 day historical volatility — and every other window — work for your edge instead of against it.
As of September 17, 2026
As of September 17, 2026
See how volatility has moved over time
Track ALKS historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.
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