China Yuchai International (CYD) Historical Volatility

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

China Yuchai International Limited, through its subsidiaries, manufactures, assembles, and sells diesel and natural gas engines for trucks, buses and passenger vehicles, marine, industrial, and agriculture applications in the People's Republic of China and internationally. It operates through two segments, Yuchai and HLGE. The company provides diesel engines comprising 4- and 6-cylinder diesel engines, high horsepower marine diesel engines, and power generator engines, as well as natural gas engines, diesel power generators, diesel engine parts, and remanufacturing services; and generator sets, as well as plug in hybrid engines, range extenders, power generation powertrains, hybrid powertrains, integrated electric drive axel powertrains, and fuel cell systems.

It also engages in the hospitality and property development activities. In addition, the company designs, produces, and sells exhaust emission control systems. It distributes its engines directly to auto original equipment manufacturers, agents, and retailers, as well as provides maintenance and retrofitting services. The company was founded in 1951 and is based in Singapore.

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