CPK · Chesapeake Utilities Corp · Options Chain

Track CPK — free

$129.82 +0.23 (+0.18%) At close · Sep 11

S&P 600 member Russell 2000 member Rebalance outlook locked

Market Cap

$3.13B

24.11M

Options Chain

Underlying $129.82 · at close Sep 11, 2026 Options Calculator

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Positioning

Sep 18, 2026 · 5 days to expiry · 46 contracts · mixed daily-bar sessions · Jan 20, 2026–Sep 8, 2026; 28 unknown

Put / call OI

0.74

Balanced positioning

Open interest

as of Sep 10, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$125.00

$4.82 below spot

ATM implied vol

22.7%

market's expected move

Open interest by strike

Calls Puts

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 5d Oct 16 33d Dec 18 96d Mar 19 187d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	—	—	$58.60	$61.30	—		$0.20	$0.00	$2.15	—	—	1	9
Call · $70 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:55:06.427 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $70 Daily-bar session Mar 11, 2026 Quote as of 2026-09-11 19:59:59.355 UTC Last $0.20 Breakeven $69.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest 9 OI effective date Sep 10, 2026 Model this put
—	—	—	—	$53.40	$56.10	—		—	$0.00	$2.15	—	—	—	—
Call · $75 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:55:03.032 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $75 Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.356 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$48.70	$51.60	—		—	$0.00	$2.15	—	—	—	—
Call · $80 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:57:21.632 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $80 Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.355 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$43.50	$46.40	—		—	$0.00	$1.55	—	—	—	—
Call · $85 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:55:02.955 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $85 Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.355 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$38.50	$40.90	—		—	$0.00	$0.95	—	—	—	—
Call · $90 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:55:02.866 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $90 Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.356 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$33.60	$36.30	—		$0.62	$0.00	$1.15	—	—	5	6
Call · $95 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:55:02.789 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $95 Daily-bar session Aug 11, 2026 Quote as of 2026-09-11 19:59:59.356 UTC Last $0.62 Breakeven $94.38 Implied vol — Delta — Gamma — Theta — Vega — Open interest 6 OI effective date Sep 10, 2026 Model this put
—	—	—	—	$28.40	$31.50	—		$1.10	$0.00	$0.75	—	—	1	1
Call · $100 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.312 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $100 Daily-bar session Mar 13, 2026 Quote as of 2026-09-11 19:59:59.356 UTC Last $1.10 Breakeven $98.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 10, 2026 Model this put
—	—	—	—	$23.40	$26.30	—		—	$0.00	$0.75	—	—	—	—
Call · $105 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.311 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $105 Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.356 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$18.40	$21.30	—		—	$0.00	$0.75	—	—	—	1
Call · $110 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.311 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $110 Daily-bar session Unknown Quote as of 2026-09-11 19:59:19.097 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 10, 2026 Model this put
1	1	—	—	$13.50	$15.90	$14.00		$0.87	$0.00	$1.25	—	—	5	6
Call · $115 In the money Daily-bar session May 13, 2026 Quote as of 2026-09-11 19:59:59.311 UTC Last $14.00 Breakeven $129.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 10, 2026 Model this call Put · $115 Daily-bar session Aug 11, 2026 Quote as of 2026-09-11 19:55:10.389 UTC Last $0.87 Breakeven $114.13 Implied vol — Delta — Gamma — Theta — Vega — Open interest 6 OI effective date Sep 10, 2026 Model this put
—	—	—	—	$8.70	$10.90	—		$0.55	$0.00	$0.75	—	—	3	3
Call · $120 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.312 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $120 Daily-bar session Jul 28, 2026 Quote as of 2026-09-11 19:59:19.097 UTC Last $0.55 Breakeven $119.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 OI effective date Sep 10, 2026 Model this put
5	3	—	—	$3.50	$5.90	$4.90		$1.45	$0.00	$2.40	—	—	1	1
Call · $125 In the money Daily-bar session Jul 2, 2026 Quote as of 2026-09-11 19:59:59.312 UTC Last $4.90 Breakeven $129.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 5 OI effective date Sep 10, 2026 Model this call Put · $125 Daily-bar session Aug 7, 2026 Quote as of 2026-09-11 19:59:19.097 UTC Last $1.45 Breakeven $123.55 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 10, 2026 Model this put
Underlying $129.82
4	1	19.5%	0.489	$0.65	$1.60	$4.40		$3.32	$0.75	$2.50	-0.505	25.9%	1	1
Call · $130 Daily-bar session Sep 2, 2026 Quote as of 2026-09-11 19:59:59.971 UTC Last $4.40 Breakeven $134.40 Implied vol 19.5% Delta 0.489 ≈49% ITM Gamma 0.135 Theta -0.124 Vega 0.061 Open interest 4 OI effective date Sep 10, 2026 Model this call Put · $130 In the money Daily-bar session Jul 14, 2026 Quote as of 2026-09-11 19:59:59.312 UTC Last $3.32 Breakeven $126.68 Implied vol 25.9% Delta -0.505 ≈51% ITM Gamma 0.102 Theta -0.15 Vega 0.061 Open interest 1 OI effective date Sep 10, 2026 Model this put
18	1	—	—	$0.00	$2.30	$2.79		$3.20	$4.80	$7.30	-0.76	45%	3	2
Call · $135 Daily-bar session Aug 25, 2026 Quote as of 2026-09-11 19:59:59.311 UTC Last $2.79 Breakeven $137.79 Implied vol — Delta — Gamma — Theta — Vega — Open interest 18 OI effective date Sep 10, 2026 Model this call Put · $135 In the money Daily-bar session Jul 28, 2026 Quote as of 2026-09-11 19:59:59.311 UTC Last $3.20 Breakeven $131.80 Implied vol 45% Delta -0.76 ≈76% ITM Gamma 0.046 Theta -0.201 Vega 0.047 Open interest 2 OI effective date Sep 10, 2026 Model this put
11	1	—	—	$0.00	$0.10	$0.45		$6.17	$9.80	$12.10	-0.832	64.1%	1	1
Call · $140 Daily-bar session Sep 8, 2026 Quote as of 2026-09-11 19:59:59.356 UTC Last $0.45 Breakeven $140.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 11 OI effective date Sep 10, 2026 Model this call Put · $140 In the money Daily-bar session Aug 25, 2026 Quote as of 2026-09-11 19:59:59.312 UTC Last $6.17 Breakeven $133.83 Implied vol 64.1% Delta -0.832 ≈83% ITM Gamma 0.026 Theta -0.232 Vega 0.038 Open interest 1 OI effective date Sep 10, 2026 Model this put
3	1	—	—	$0.00	$2.15	$0.80		$10.72	$14.10	$17.50	-0.877	78%	1	1
Call · $145 Daily-bar session Jul 20, 2026 Quote as of 2026-09-11 19:59:59.311 UTC Last $0.80 Breakeven $145.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 OI effective date Sep 10, 2026 Model this call Put · $145 In the money Daily-bar session Aug 25, 2026 Quote as of 2026-09-11 19:59:59.311 UTC Last $10.72 Breakeven $134.28 Implied vol 78% Delta -0.877 ≈88% ITM Gamma 0.017 Theta -0.228 Vega 0.031 Open interest 1 OI effective date Sep 10, 2026 Model this put
—	1	—	—	$0.00	$0.95	$0.70		—	$19.70	$22.40	-0.872	102.8%	—	—
Call · $150 Daily-bar session Jan 20, 2026 Quote as of 2026-09-11 19:59:59.355 UTC Last $0.70 Breakeven $150.70 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $150 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.312 UTC Last — Breakeven — Implied vol 102.8% Delta -0.872 ≈87% ITM Gamma 0.013 Theta -0.313 Vega 0.032 Open interest — OI effective date — Model this put
1	1	—	—	$0.00	$0.95	$1.20		—	$24.40	$27.20	-0.905	109.6%	—	—
Call · $155 Daily-bar session Mar 16, 2026 Quote as of 2026-09-11 19:59:59.355 UTC Last $1.20 Breakeven $156.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 10, 2026 Model this call Put · $155 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.312 UTC Last — Breakeven — Implied vol 109.6% Delta -0.905 ≈91% ITM Gamma 0.01 Theta -0.266 Vega 0.026 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.75	—		—	$29.80	$32.10	—	—	—	—
Call · $160 Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.356 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $160 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:55:09.411 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.95	—		—	$34.50	$37.20	—	—	—	—
Call · $165 Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.357 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $165 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:55:09.421 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.25	—		—	$39.80	$42.00	—	—	—	—
Call · $170 Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.356 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $170 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:55:02.866 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$44.80	$47.30	—	—	—	—
Call · $175 Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.313 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $175 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:55:02.955 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$49.10	$52.10	—	—	—	—
Call · $180 Daily-bar session Unknown Quote as of 2026-09-11 19:57:21.748 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $180 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:57:21.624 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put

About this data

Each contract's last price, day range and volume belong to the daily-bar session shown in its details; unknown means the source omitted that timestamp. Open interest has its own effective date shown separately; implied volatility and greeks are model values computed when fetched. This chain has mixed daily-bar sessions · Jan 20, 2026–Sep 8, 2026; 28 unknown. Positioning totals are shown only when every returned open-interest value has the same known effective date. Bid and ask are real-time consolidated OPRA readings.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 19745 CUSIP 165303108 13F (30d) 71 filings 71 filers Visit website