Tracking ALLY historical volatility helps you see how much Ally Financial 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, ALLY's HV, also known as realized volatility, shows what actually happened. Use our scanner to monitor ALLY 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. ALLY's 30 day historical volatility, or ALLY HV, is one of the most widely watched readings because it balances responsiveness with stability. Comparing ALLY'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.
Ally Financial Inc., a digital financial-services company, provides various digital financial products and services to consumer, commercial, and corporate customers primarily in the United States and Canada. It operates through four segments: Automotive Finance Operations, Insurance Operations, Mortgage Finance Operations, and Corporate Finance Operations. The Automotive Finance Operations segment offers automotive financing services, including providing retail installment sales contracts, loans and operating leases, term loans to dealers, financing dealer floorplans and other lines of credit to dealers, warehouse lines to automotive retailers, and fleet financing.
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