Chunghwa Telecom ADR (CHT) Historical Volatility

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

Chunghwa Telecom Co., Ltd., together with its subsidiaries, provides telecommunication services in Taiwan and internationally. It operates through Domestic Fixed Communications Business, Mobile Communications Business, Internet Business, International Fixed Communications Business, and Others segments. The company offers local and domestic long-distance telephone, broadband access, and related services; information and communication technology and VAS services; and interconnection with its fixed-line network to other mobile and fixed-line operators. It also provides mobile; HiNet Internet, data communication, and cloud; Internet data center; and international long-distance telephone and data services.