Enanta Pharmaceuticals Inc
Enanta Pharmaceuticals Inc (ENTA) Historical Volatility
ENTA 30-day historical volatility is 44%. This ranks in the 33th percentile of readings over the past year.
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Tracking ENTA historical volatility helps you see how much Enanta Pharmaceuticals Inc'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, Enanta Pharmaceuticals Inc's HV tells you what really happened. Use our scanner to monitor ENTA 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 ENTA 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing Enanta Pharmaceuticals Inc'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.
Enanta Pharmaceuticals, Inc., a biotechnology company, discovers and develops small molecule drugs for the treatment of viral infections and liver diseases. Its research and development disease targets include respiratory syncytial virus, SARS-CoV-2, human metapneumovirus, and hepatitis B virus. The company has a collaborative development and license agreement with Abbott Laboratories to identify, develop, and commercialize HCV NS3 and NS3/4A protease inhibitor compounds, including paritaprevir and glecaprevir for the treatment of chronic hepatitis C virus. Enanta Pharmaceuticals, Inc. was founded in 1995 and is headquartered in Watertown, Massachusetts.
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 Enanta Pharmaceuticals Inc's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where ENTA HV is running hot, cold, or in line. Make the ENTA 30 day historical volatility — and every other window — work for your edge instead of against it.
As of September 25, 2026
As of September 25, 2026
See how volatility has moved over time
Track ENTA historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.
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