California Water Service Group (CWT) Options Chain
NYSE: CWTUtilitiesWater SupplyUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Dec 18, 2026
- Days to expiration
- 69
- Share price
- $45.94
- Put/call ratio (OI)
- 1.23
- Put/call ratio (volume)
- 0.18
- Expected move
- ±$5.43
- Open interest (C / P)
- 44 / 54
CWT options summary
The CWT options chain for the December 18, 2026 expiration lists 6 call and 3 put contracts, with 69 days until expiration. Open interest stands at 44 calls and 54 puts, a put/call ratio of 1.23, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $45.00 strike is 27.2%, which implies the market expects a move of about ±$5.43 (11.8%) in California Water Service Group stock by expiration.
The most open interest sits at the $55.00 call (17 contracts) and the $45.00 put (42 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
CWT options chain · December 18, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 15.07 | 13.10 | 18.00 | 35.00 | 0.00 | 4.80 | 0.75 | |||||
| — | — | — | 40.00 | 0.00 | 4.80 | 0.55 | |||||
| 2.95 | 2.10 | 2.70 | 45.00 | 0.00 | 1.65 | 1.54 | |||||
| 0.86 | 0.00 | 4.90 | 50.00 | — | — | — | |||||
| 0.35 | 0.10 | 0.40 | 55.00 | — | — | — | |||||
| 0.69 | 0.00 | 4.80 | 60.00 | — | — | — | |||||
| 0.15 | 0.00 | 4.80 | 65.00 | — | — | — | |||||
In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.
Frequently asked questions
What is the CWT put/call ratio?
For the December 18, 2026 expiration, the CWT put/call ratio based on open interest is 1.23 (54 puts vs 44 calls), and 0.18 based on today's volume. A ratio above 1 means more puts than calls.
What is CWT's implied volatility?
At-the-money implied volatility for CWT options expiring December 18, 2026 is about 27.2%, an annualized estimate of how much the market expects California Water Service Group stock to move.
How many CWT option expiration dates are there?
CWT has 4 listed expiration dates, from Oct 16, 2026 to Mar 19, 2027.
What does "in the money" mean?
A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.