Federal Signal Corp (FSS) Historical Volatility

Tracking FSS historical volatility helps you see how much Federal Signal Corp'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, FSS's HV, also known as realized volatility, shows what actually happened. Use our scanner to monitor FSS 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. FSS's 30 day historical volatility, or FSS HV, is one of the most widely watched readings because it balances responsiveness with stability. Comparing FSS'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.

Federal Signal Corporation, together with its subsidiaries, designs, manufactures, and supplies a suite of products and integrated solutions for municipal, governmental, industrial, and commercial customers in the United States, Canada, Europe, and internationally. It operates through Environmental Solutions Group, and Safety and Security Systems Group. The Environmental Solutions Group segment offers a range of street sweepers, safe-digging trucks ,sewer cleaners, industrial vacuum loaders, vacuum, and hydro-excavation trucks; road-marking, line-removal and waterblasting equipment, dump truck bodies, trailers, and metal extraction support equipment under the Elgin, Vactor, Guzzler, TRUVAC, Westech, Jetstream, Mark Rite Lines, Ox Bodies, Crysteel, J-Craft, Duraclass, Rugby, Travis, OSW, NTE, WTB, Ground Force, Bucks, and Switch-N-Go brand names.