Enersys
Enersys (ENS) Historical Volatility
ENS 30-day historical volatility is 33%. This ranks in the 39th percentile of readings over the past year.
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Tracking ENS historical volatility helps you see how much Enersys'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, Enersys's HV tells you what really happened. Use our scanner to monitor ENS 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 ENS 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing Enersys'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.
EnerSys provides various stored energy solutions for industrial applications worldwide. It operates in three segments: Energy Systems, Motive Power, and Specialty. The company offers uninterruptible power systems applications for computer and computer-controlled systems, as well as telecommunications systems; switchgear and electrical control systems used in industrial facilities and electric utilities, large-scale energy storage, and energy pipelines; integrated power solutions and services to broadband, telecom, renewable, and industrial customers; and thermally managed cabinets and enclosures for electronic equipment and batteries.
It also provides motive power products that are used to provide power for electric industrial forklifts used in manufacturing, warehousing, and other material handling applications. In addition, the company offers mining equipment, diesel locomotive starting, and other rail equipment. Further, it provides specialty batteries for starting, lighting, and ignition applications in transportation; and energy solutions for satellites, military aircraft, submarines, ships, and other tactical vehicles, as well as medical and security systems. Additionally, the company offers battery chargers, power equipment, battery accessories, and outdoor cabinet enclosures, as well as related after-market and customer-support services for industrial batteries. The company sells its products through a network of distributors, independent representatives, and internal sales forces. The company was formerly known as Yuasa, Inc. and changed its name to EnerSys in January 2001. EnerSys was incorporated in 2000 and is headquartered in Reading, Pennsylvania.
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 Enersys's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where ENS HV is running hot, cold, or in line. Make the ENS 30 day historical volatility — and every other window — work for your edge instead of against it.
As of September 23, 2026
As of September 23, 2026
See how volatility has moved over time
Track ENS historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.
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