CMS · Cms Energy Corp

Track CMS — free

$71.11 +0.60 (+0.85%) At close · Aug 14

Market Cap

$22.30B

313.58M

Options Chain

Underlying $71.11 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 5 days to expiry · 30 contracts · mixed snapshot sessions · Jul 8, 2026–Aug 14, 2026; 19 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

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 · $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 — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $45 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $45 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $50 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $50 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	-0.067	151.9%	—	0
Call · $55 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $55 Snapshot session Unknown Last — Breakeven — Implied vol 151.9% Delta -0.067 ≈7% ITM Gamma 0.01 Theta -0.16 Vega 0.013 Open interest 0 Model this put
0	—	—	—	—		$0.10	-0.09	109.8%	2	91
Call · $60 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $60 Snapshot session Aug 4, 2026 Last $0.10 Breakeven $59.90 Implied vol 109.8% Delta -0.09 ≈9% ITM Gamma 0.017 Theta -0.143 Vega 0.014 Open interest 91 Model this put
0	—	—	—	—		$0.05	-0.129	68.8%	2	4
Call · $65 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $65 Snapshot session Aug 14, 2026 Last $0.05 Breakeven $64.95 Implied vol 68.8% Delta -0.129 ≈13% ITM Gamma 0.036 Theta -0.118 Vega 0.022 Open interest 4 Model this put
252	53	22.5%	0.722	$1.60		$0.50	-0.31	26.9%	12	107
Call · $70 In the money Snapshot session Aug 14, 2026 Last $1.60 Breakeven $71.60 Implied vol 22.5% Delta 0.722 ≈72% ITM Gamma 0.174 Theta -0.06 Vega 0.03 Open interest 252 Model this call Put · $70 Snapshot session Aug 13, 2026 Last $0.50 Breakeven $69.50 Implied vol 26.9% Delta -0.31 ≈31% ITM Gamma 0.153 Theta -0.077 Vega 0.03 Open interest 107 Model this put
Underlying $71.11
299	148	32.9%	0.094	$0.20		$5.00	-0.803	49.5%	1	0
Call · $75 Snapshot session Aug 14, 2026 Last $0.20 Breakeven $75.20 Implied vol 32.9% Delta 0.094 ≈9% ITM Gamma 0.059 Theta -0.044 Vega 0.016 Open interest 299 Model this call Put · $75 In the money Snapshot session Aug 5, 2026 Last $5.00 Breakeven $70.00 Implied vol 49.5% Delta -0.803 ≈80% ITM Gamma 0.065 Theta -0.111 Vega 0.023 Open interest 0 Model this put
305	83	62.9%	0.064	$0.20		$4.75	-0.877	80.5%	20	0
Call · $80 Snapshot session Aug 14, 2026 Last $0.20 Breakeven $80.20 Implied vol 62.9% Delta 0.064 ≈6% ITM Gamma 0.023 Theta -0.064 Vega 0.009 Open interest 305 Model this call Put · $80 In the money Snapshot session Jul 28, 2026 Last $4.75 Breakeven $75.25 Implied vol 80.5% Delta -0.877 ≈88% ITM Gamma 0.029 Theta -0.132 Vega 0.016 Open interest 0 Model this put
10	10	109%	0.099	$0.08		$9.10	-0.937	93%	2	0
Call · $85 Snapshot session Jul 10, 2026 Last $0.08 Breakeven $85.08 Implied vol 109% Delta 0.099 ≈10% ITM Gamma 0.019 Theta -0.152 Vega 0.017 Open interest 10 Model this call Put · $85 In the money Snapshot session Jul 8, 2026 Last $9.10 Breakeven $75.90 Implied vol 93% Delta -0.937 ≈94% ITM Gamma 0.015 Theta -0.092 Vega 0.01 Open interest 0 Model this put
0	1	—	—	$0.05		—	-0.898	143.1%	—	0
Call · $90 Snapshot session Aug 14, 2026 Last $0.05 Breakeven $90.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $90 In the money Snapshot session Unknown Last — Breakeven — Implied vol 143.1% Delta -0.898 ≈90% ITM Gamma 0.014 Theta -0.203 Vega 0.017 Open interest 0 Model this put
0	—	—	—	—		—	-0.915	164.8%	—	0
Call · $95 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $95 In the money Snapshot session Unknown Last — Breakeven — Implied vol 164.8% Delta -0.915 ≈91% ITM Gamma 0.011 Theta -0.207 Vega 0.017 Open interest 0 Model this put
0	—	—	—	—		—	-0.958	156.4%	—	0
Call · $100 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $100 In the money Snapshot session Unknown Last — Breakeven — Implied vol 156.4% Delta -0.958 ≈96% ITM Gamma 0.007 Theta -0.11 Vega 0.01 Open interest 0 Model this put
0	—	—	—	—		—	-0.968	165.7%	—	0
Call · $105 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $105 In the money Snapshot session Unknown Last — Breakeven — Implied vol 165.7% Delta -0.968 ≈97% ITM Gamma 0.005 Theta -0.092 Vega 0.005 Open interest 0 Model this put
0	—	—	—	—		—	-0.942	212%	—	0
Call · $110 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $110 In the money Snapshot session Unknown Last — Breakeven — Implied vol 212% Delta -0.942 ≈94% ITM Gamma 0.006 Theta -0.193 Vega 0.011 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 · Jul 8, 2026–Aug 14, 2026; 19 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 811156 CUSIP 125896100 13F (30d) 740 filings 712 filers Visit website Investor relations