Federal Signal Corp

FSSNYSE · USD
114.75USD0.00 (+1.75%)
795

Federal Signal Corp (FSS) Historical Volatility

FSS 30-day historical volatility is 25%. This ranks in the 23th percentile of readings over the past year.

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Tracking FSS historical volatility helps you see how much Federal Signal 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, Federal Signal Corp's HV tells you what really 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 an underlying's past returns, typically measured over rolling windows like 10, 20, 30, or 60 days. The FSS 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing Federal Signal 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.

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.

It also offers refuse and recycling collection vehicles, camera systems, ice resurfacing equipment, and snow-removal equipment, as well as safety, and security systems. In addition, this segment engages in the sale of parts, service and repair, equipment rental, and training activities. The Safety and Security Systems Group segment provides systems and products for community alerting, emergency vehicles, first responder interoperable communications, and industrial communications. Its products include vehicle lightbars and sirens, industrial signaling equipment, public warning systems, general alarm systems, and public address systems. This segment sells its products under the Federal Signal, Federal Signal VAMA, and Victor brand names. The company sells its products through wholesaler, distributor, independent manufacturer representative, original equipment manufacturer, and direct sales force, as well as independent foreign distributor. Federal Signal Corporation was founded in 1901 and is headquartered in Oak Brook, Illinois.

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 Federal Signal Corp's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where FSS HV is running hot, cold, or in line. Make the FSS 30 day historical volatility — and every other window — work for your edge instead of against it.

IV vs HV
Implied Volatility (IV) vs Historical Volatility (HV) over the past month.

As of September 25, 2026

IV - HV Difference
Difference between IV and HV over time. Positive values indicate IV > HV.

As of September 25, 2026

See how volatility has moved over time

Track FSS historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.

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