California Water Service Group (CWT) Historical Volatility

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

California Water Service Group, through its subsidiaries, provides water utility and other related services in California, Washington, New Mexico, Hawaii, and Texas. The company is involved in the production, purchase, storage, treatment, testing, distribution, and sale of water for domestic, industrial, public, and irrigation uses, as well as for fire protection. It offers its services to approximately 494,500 customer connections in 100 California communities; approximately 6,200 water and wastewater customer connections on the islands of Maui and Hawaii; approximately 36,400 customer connections in the Tacoma, Olympia, Graham, Spanaway, Puyallup, and Gig Harbor areas; and approximately 8,600 water and wastewater customer connections in the Belen, Los Lunas, Indian Hills, and Elephant Butte areas in New Mexico.

The company also engages in the provision of non-regulated water-related services, including operating of municipally owned water systems, privately owned water, and recycled water distribution systems; water system operation, meter reading, and billing services to private companies and municipalities; leasing of communication antenna sites on its properties to telecommunication companies; and billing of optional third-party insurance programs to its residential customers, as well as provides lab services. In addition, it offers wastewater collection and treatment services. The company was founded in 1926 and is headquartered in San Jose, California.

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