James Hardie Industries plc
James Hardie Industries plc (JHX) Historical Volatility
JHX 30-day historical volatility is 36%. This ranks in the 18th percentile of readings over the past year.
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Tracking JHX historical volatility helps you see how much James Hardie Industries 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, James Hardie Industries plc's HV tells you what really happened. Use our scanner to monitor JHX 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 JHX 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing James Hardie Industries 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.
James Hardie Industries plc, together with its subsidiaries, manufactures and sells fiber cement, fiber gypsum, and cement bonded building products for interior and exterior building construction applications primarily in the United States, Australia, Europe, New Zealand, the Philippines, and Canada. The company operates through three segments: North America Fiber Cement, Asia Pacific Fiber Cement, and Europe Building Products. It offers fiber cement interior linings, exterior siding products, and related accessories; and various fiber cement building materials for a range of applications, including external siding, internal walls, floors, ceilings, soffits, trim, fences, and facades.
The company also provides fiber gypsum and cement-bonded boards for applications, such as timber frame construction, dry lining, DIY, and structural fire protection. Its products are used in various markets comprising new residential construction and commercial construction markets. James Hardie Industries plc was founded in 1888 and is based 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 James Hardie Industries plc's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where JHX HV is running hot, cold, or in line. Make the JHX 30 day historical volatility — and every other window — work for your edge instead of against it.
As of September 28, 2026
As of September 28, 2026
See how volatility has moved over time
Track JHX historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.
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