Richardson Electronics Ltd (RELL) Historical Volatility

Tracking RELL historical volatility helps you see how much Richardson Electronics Ltd'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, Richardson Electronics Ltd's HV tells you what really happened. Use our scanner to monitor RELL 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 RELL 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing Richardson Electronics Ltd'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.

Richardson Electronics, Ltd. engages in the power and microwave technologies, customized display solutions, and healthcare businesses in North America, the Asia Pacific, Europe, and Latin America. Its Power and Microwave Technologies Group segment provides engineered solutions, power grid and microwave tubes, and related consumables; technical services for microwave and industrial equipment; and power conversion and RF and microwave component for broadcast transmission, CO2 laser cutting, diagnostic imaging, dielectric and induction heating, high energy transfer, high voltage switching, plasma, power conversion, radar, and radiation oncology applications.

The company's Canvys segment provides custom display solutions, such as touch screens, protective panels, all-in-one computers, custom enclosures, specialized cabinet finishes, application specific software packages, and certification services to corporate enterprise, financial, healthcare, industrial, and medical original equipment manufacturer markets. Its Healthcare segment manufactures and distributes diagnostic imaging replacement parts for CT and MRI systems; replacement CT and MRI tubes; MRI coils, cold heads, and RF amplifiers; hydrogen thyratrons, klystrons, and magnetrons; flat panel detector upgrades; pre-owned CT systems; and additional replacement solutions, as well as offers CT service training. It serves hospitals, medical centers, asset management companies, independent service organizations, and multi-vendor service providers. The company's products are used to control, switch, or amplify electrical power signals, as well as used as display devices in alternative energy, healthcare, aviation, communications, industrial, marine, medical, military, scientific, and semiconductor markets. The company was founded in 1947 and is headquartered in LaFox, 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 Richardson Electronics Ltd's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where RELL HV is running hot, cold, or in line. Make the RELL 30 day historical volatility — and every other window — work for your edge instead of against it.