GrafTech International Ltd (EAF) Historical Volatility

Tracking EAF historical volatility helps you see how much GrafTech International Ltd'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, GrafTech International Ltd's HV tells you what really happened. Use our scanner to monitor EAF 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 EAF 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing GrafTech International Ltd'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.

GrafTech International Ltd. research, develops, manufactures, and sells graphite and carbon-based solutions worldwide. It offers graphite electrodes to produce electric arc furnace steel and other ferrous and non-ferrous metals; and petroleum needle coke, a crystalline form of carbon used in the production of graphite electrodes. The company sells its products primarily through direct sales force, independent sales representatives, and distributors. GrafTech International Ltd. was founded in 1886 and is headquartered in Brooklyn Heights, Ohio.

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 GrafTech International Ltd's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where EAF HV is running hot, cold, or in line. Make the EAF 30 day historical volatility — and every other window — work for your edge instead of against it.