Jefferies Financial Group Inc

JEFNYSE · USD
47.68USD0.00 (+3.12%)
825

Jefferies Financial Group Inc (JEF) Historical Volatility

JEF 30-day historical volatility is 28%. This ranks in the 17th percentile of readings over the past year.

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

Jefferies Financial Group Inc. engages in the investment banking and capital markets, and asset management businesses in the Americas, Europe, the Middle East, Africa, and Asia. The company operates in Investment Banking and Capital Markets, Asset Management, Merchant Banking, and Corporate segments. It provides investment banking, advisory services with respect to mergers or acquisitions, restructurings or recapitalizations and private capital advisory transactions; equity and debt underwriting; and corporate lending. In addition, the company offers financing, securities lending, and other prime brokerage services; equities research and finance; and wealth management services.

Further, it provides clients with sales and trading of investment grade corporate bonds, U.S. and European government and agency securities, municipal bonds, mortgage-backed and asset-backed securities, leveraged loans, consumer loans, high yield and distressed securities, emerging markets debt, interest rate, and credit derivative products, as well as foreign exchange trade execution and securitization; and manages, invests in, and provides services to a diverse group of alternative asset management platforms across a spectrum of investment strategies and asset classes. The company was formerly known as Leucadia National Corporation and changed its name to Jefferies Financial Group Inc. in May 2018. Jefferies Financial Group Inc. was founded in 1962 and is headquartered in New York, New York.

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

IV vs HV
Implied Volatility (IV) vs Historical Volatility (HV) over the past month.

As of September 25, 2026

IV - HV Difference
Difference between IV and HV over time. Positive values indicate IV > HV.

As of September 25, 2026

See how volatility has moved over time

Track JEF historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.

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