Citigroup Inc
Citigroup Inc (C) Historical Volatility
C 30-day historical volatility is 23%. This ranks in the 22th percentile of readings over the past year.
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Tracking C historical volatility helps you see how much Citigroup 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, Citigroup Inc's HV tells you what really happened. Use our scanner to monitor C 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 C 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing Citigroup 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.
Citigroup Inc., a diversified financial services holding company, provides various financial products and services to consumers, corporations, governments, and institutions in North America, Latin America, Asia, Europe, the Middle East, and Africa. The company operates in two segments, Global Consumer Banking (GCB) and Institutional Clients Group (ICG). The GCB segment offers traditional banking services to retail customers through retail banking, Citi-branded cards, and Citi retail services. It also provides various banking, credit card, lending, and investment services through a network of local branches, offices, and electronic delivery systems.
The ICG segment offers wholesale banking products and services, including fixed income and equity sales and trading, foreign exchange, prime brokerage, derivative, equity and fixed income research, corporate lending, investment banking and advisory, private banking, cash management, trade finance, and securities services to corporate, institutional, public sector, and high-net-worth clients. As of December 31, 2020, it operated 2,303 branches primarily in the United States, Mexico, and Asia. Citigroup Inc. was founded in 1812 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 Citigroup Inc's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where C HV is running hot, cold, or in line. Make the C 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 C historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.
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