Alliant Energy Corp
Alliant Energy Corp (LNT) Historical Volatility
LNT 30-day historical volatility is 13%. This ranks in the 6th percentile of readings over the past year.
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Tracking LNT historical volatility helps you see how much Alliant Energy Corp'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, Alliant Energy Corp's HV tells you what really happened. Use our scanner to monitor LNT 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 LNT 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing Alliant Energy Corp'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.
Alliant Energy Corporation operates as a utility holding company that provides regulated electricity and natural gas services. It operates through three segments: Utility Electric Operations, Utility Gas Operations, and Utility Other. The company, through its subsidiary, Interstate Power and Light Company (IPL), primarily generates and distributes electricity, and distributes and transports natural gas to retail customers in Iowa; sells electricity to wholesale customers in Minnesota, Illinois, and Iowa; and generates and distributes steam in Cedar Rapids, Iowa. Alliant Energy Corporation, through its other subsidiary, Wisconsin Power and Light Company (WPL), generates and distributes electricity, and distributes and transports natural gas to retail customers in Wisconsin; and sells electricity to wholesale customers in Wisconsin.
As of December 31, 2021, IPL supplied electric and natural gas service to approximately 500,000 and 225,000 retail customers respectively; and WPL supplied electric and natural gas service to approximately 485,000 and 200,000 retail customers, respectively. It serves retail customers in the farming, agriculture, industrial manufacturing, chemical, and packaging and food industries. In addition, the company owns and operates a short-line rail freight service in Iowa; a barge, rail, and truck freight terminal on the Mississippi River; and a rail-served warehouse in Iowa, as well as offers freight brokerage services. Further, it holds interests in a 347 megawatt (MW) natural gas-fired electric generating unit near Sheboygan Falls, Wisconsin; and a 225 MW wind farm located in Oklahoma. The company was incorporated in 1981 and is headquartered in Madison, Wisconsin.
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 Alliant Energy Corp's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where LNT HV is running hot, cold, or in line. Make the LNT 30 day historical volatility — and every other window — work for your edge instead of against it.
As of September 24, 2026
As of September 24, 2026
See how volatility has moved over time
Track LNT historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.
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