MSEX · Middlesex Water Co

Track MSEX — free

$58.49 +0.63 (+1.09%) At close · Aug 28

S&P 600 member Russell 2000 member Rebalance outlook locked

Market Cap

$1.10B

18.84M

Options Chain

Underlying $58.49 · at close Aug 28, 2026 Options Calculator

Positioning

Sep 18, 2026 · 18 days to expiry · 22 contracts · mixed snapshot sessions · Mar 23, 2026–Aug 27, 2026; 10 unknown

Put / call OI

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dated and unknown snapshot sessions

Open interest

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dated and unknown snapshot sessions

Volume

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dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 18d Oct 16 46d Dec 18 109d Mar 19 200d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	215.7%	0.942	—		—	-0.037	183.3%	—	0
Call · $30 In the money Snapshot session Unknown Last — Breakeven — Implied vol 215.7% Delta 0.942 ≈94% ITM Gamma 0.004 Theta -0.084 Vega 0.016 Open interest 0 Model this call Put · $30 Snapshot session Unknown Last — Breakeven — Implied vol 183.3% Delta -0.037 ≈4% ITM Gamma 0.003 Theta -0.052 Vega 0.009 Open interest 0 Model this put
0	—	172.6%	0.928	—		—	-0.046	147.1%	—	0
Call · $35 In the money Snapshot session Unknown Last — Breakeven — Implied vol 172.6% Delta 0.928 ≈93% ITM Gamma 0.006 Theta -0.08 Vega 0.018 Open interest 0 Model this call Put · $35 Snapshot session Unknown Last — Breakeven — Implied vol 147.1% Delta -0.046 ≈5% ITM Gamma 0.005 Theta -0.05 Vega 0.01 Open interest 0 Model this put
0	2	135.7%	0.91	$18.25		$0.10	-0.05	106.9%	8	15
Call · $40 In the money Snapshot session Aug 12, 2026 Last $18.25 Breakeven $58.25 Implied vol 135.7% Delta 0.91 ≈91% ITM Gamma 0.009 Theta -0.076 Vega 0.019 Open interest 0 Model this call Put · $40 Snapshot session Aug 27, 2026 Last $0.10 Breakeven $39.90 Implied vol 106.9% Delta -0.05 ≈5% ITM Gamma 0.007 Theta -0.039 Vega 0.011 Open interest 15 Model this put
0	1	100.3%	0.887	$8.47		$5.00	-0.078	82.7%	1	3
Call · $45 In the money Snapshot session Mar 23, 2026 Last $8.47 Breakeven $53.47 Implied vol 100.3% Delta 0.887 ≈89% ITM Gamma 0.015 Theta -0.067 Vega 0.03 Open interest 0 Model this call Put · $45 Snapshot session Jun 30, 2026 Last $5.00 Breakeven $40.00 Implied vol 82.7% Delta -0.078 ≈8% ITM Gamma 0.014 Theta -0.042 Vega 0.02 Open interest 3 Model this put
0	1	67.2%	0.843	$6.50		$0.10	-0.191	80.8%	1	0
Call · $50 In the money Snapshot session Jun 22, 2026 Last $6.50 Breakeven $56.50 Implied vol 67.2% Delta 0.843 ≈84% ITM Gamma 0.027 Theta -0.056 Vega 0.032 Open interest 0 Model this call Put · $50 Snapshot session Aug 17, 2026 Last $0.10 Breakeven $49.90 Implied vol 80.8% Delta -0.191 ≈19% ITM Gamma 0.026 Theta -0.077 Vega 0.032 Open interest 0 Model this put
1	1	39.7%	0.715	$4.03		$4.25	-0.217	28.3%	2	2
Call · $55 In the money Snapshot session Aug 21, 2026 Last $4.03 Breakeven $59.03 Implied vol 39.7% Delta 0.715 ≈71% ITM Gamma 0.066 Theta -0.047 Vega 0.044 Open interest 1 Model this call Put · $55 Snapshot session Apr 23, 2026 Last $4.25 Breakeven $50.75 Implied vol 28.3% Delta -0.217 ≈22% ITM Gamma 0.081 Theta -0.029 Vega 0.034 Open interest 2 Model this put
Underlying $58.49
114	1	27.1%	0.27	$0.30		$7.80	-0.825	18.2%	1	1
Call · $60 Snapshot session Aug 27, 2026 Last $0.30 Breakeven $60.30 Implied vol 27.1% Delta 0.27 ≈27% ITM Gamma 0.094 Theta -0.032 Vega 0.046 Open interest 114 Model this call Put · $60 In the money Snapshot session Apr 6, 2026 Last $7.80 Breakeven $52.20 Implied vol 18.2% Delta -0.825 ≈83% ITM Gamma 0.109 Theta -0.016 Vega 0.035 Open interest 1 Model this put
24	1	47.1%	0.141	$0.50		—	—	—	—	0
Call · $65 Snapshot session Aug 5, 2026 Last $0.50 Breakeven $65.50 Implied vol 47.1% Delta 0.141 ≈14% ITM Gamma 0.037 Theta -0.037 Vega 0.025 Open interest 24 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
3	4	56.3%	0.071	$0.05		—	—	—	—	0
Call · $70 Snapshot session Aug 27, 2026 Last $0.05 Breakeven $70.05 Implied vol 56.3% Delta 0.071 ≈7% ITM Gamma 0.019 Theta -0.027 Vega 0.015 Open interest 3 Model this call Put · $70 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	81.6%	0.091	—		—	—	—	—	0
Call · $75 Snapshot session Unknown Last — Breakeven — Implied vol 81.6% Delta 0.091 ≈9% ITM Gamma 0.015 Theta -0.047 Vega 0.026 Open interest 0 Model this call Put · $75 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	96.4%	0.08	—		—	—	—	—	0
Call · $80 Snapshot session Unknown Last — Breakeven — Implied vol 96.4% Delta 0.08 ≈8% ITM Gamma 0.012 Theta -0.05 Vega 0.016 Open interest 0 Model this call Put · $80 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 · Mar 23, 2026–Aug 27, 2026; 10 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 66004 CUSIP 596680108 13F (30d) 162 filings 162 filers Visit website Investor relations