CWT · California Water Service Group

Track CWT — free

$50.40 +0.21 (+0.42%) At close · Aug 14

Market Cap

$3.12B

61.84M

Options Chain

Underlying $50.40 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 5 days to expiry · 18 contracts · mixed snapshot sessions · Jun 30, 2026–Aug 13, 2026; 14 unknown

Put / call OI

—

dated and unknown snapshot sessions

Open interest

—

dated and unknown snapshot sessions

Volume

—

dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 5d Sep 18 33d Dec 18 124d Mar 19 215d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	—	—	—		—	—	—	—	0
Call · $25 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $25 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $30 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $30 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	141%	0.985	—		—	—	—	—	0
Call · $35 In the money Snapshot session Unknown Last — Breakeven — Implied vol 141% Delta 0.985 ≈98% ITM Gamma 0.004 Theta -0.029 Vega 0.003 Open interest 0 Model this call Put · $35 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	-0.089	147.3%	—	0
Call · $40 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $40 Snapshot session Unknown Last — Breakeven — Implied vol 147.3% Delta -0.089 ≈9% ITM Gamma 0.017 Theta -0.131 Vega 0.01 Open interest 0 Model this put
3	3	—	—	$7.55		—	-0.14	88.5%	—	0
Call · $45 In the money Snapshot session Jul 28, 2026 Last $7.55 Breakeven $52.55 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 Model this call Put · $45 Snapshot session Unknown Last — Breakeven — Implied vol 88.5% Delta -0.14 ≈14% ITM Gamma 0.04 Theta -0.109 Vega 0.016 Open interest 0 Model this put
52	1	20.8%	0.626	$0.94		$0.80	-0.368	19.9%	1	1
Call · $50 In the money Snapshot session Aug 13, 2026 Last $0.94 Breakeven $50.94 Implied vol 20.8% Delta 0.626 ≈63% ITM Gamma 0.292 Theta -0.044 Vega 0.025 Open interest 52 Model this call Put · $50 Snapshot session Aug 12, 2026 Last $0.80 Breakeven $49.20 Implied vol 19.9% Delta -0.368 ≈37% ITM Gamma 0.304 Theta -0.042 Vega 0.025 Open interest 1 Model this put
Underlying $50.40
3	3	111.1%	0.289	$0.40		—	-0.892	54.8%	—	0
Call · $55 Snapshot session Jun 30, 2026 Last $0.40 Breakeven $55.40 Implied vol 111.1% Delta 0.289 ≈29% ITM Gamma 0.049 Theta -0.211 Vega 0.023 Open interest 3 Model this call Put · $55 In the money Snapshot session Unknown Last — Breakeven — Implied vol 54.8% Delta -0.892 ≈89% ITM Gamma 0.054 Theta -0.055 Vega 0.012 Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $60 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $60 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $65 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $65 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put

About this data

Each contract's last price, volume, greeks, implied volatility and open interest belongs to the snapshot session shown in its details; unknown means the provider omitted the timestamp. This chain has mixed snapshot sessions · Jun 30, 2026–Aug 13, 2026; 14 unknown. Cross-contract positioning totals are shown only when every returned row has the same known session. Bid and ask are not included on this plan.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown.

Key facts CIK 1035201 CUSIP 130788102 13F (30d) 325 filings 323 filers Visit website Investor relations