Tracking ECL historical volatility helps you see how much Ecolab Inc's stock price has actually moved, giving you a baseline for whether option premiums look fair, cheap, or expensive. While implied volatility shows what the market expects, ECL's HV, also known as realized volatility, shows what actually happened. Use our scanner to monitor ECL 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 a stock's past returns, typically measured over rolling windows like 10, 20, 30, or 60 days. ECL's 30 day historical volatility, or ECL HV, is one of the most widely watched readings because it balances responsiveness with stability. Comparing ECL's HV to its implied volatility reveals the volatility risk premium. When IV sits well above HV, options are pricing in more movement than the stock has actually delivered, giving option sellers an edge. When HV runs hot relative to IV, options are pricing in less movement than the stock has delivered, and buyers may be underpaying for it.
Ecolab Inc. provides water, hygiene, and infection prevention solutions and services in the United States and internationally. The company operates through Global Industrial, Global Institutional & Specialty, and Global Healthcare & Life Sciences segments. The Global Industrial segment offers water treatment and process applications, and cleaning and sanitizing solutions to manufacturing, food and beverage processing, transportation, chemical, metals and mining, power generation, pulp and paper, commercial laundry, petroleum, refining, and petrochemical industries. The Global Institutional & Specialty segment provides specialized cleaning and sanitizing products to the foodservice, hospitality, lodging, government and education, and retail industries.
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