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	149.3%	—	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 149.3% Delta -0.067 ≈7% ITM Gamma 0.01 Theta -0.154 Vega 0.014 Open interest 0 Model this put
0	—	—	—	—		$0.10	-0.09	107.9%	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 107.9% Delta -0.09 ≈9% ITM Gamma 0.017 Theta -0.138 Vega 0.014 Open interest 91 Model this put
0	—	—	—	—		$0.05	-0.129	67.6%	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 67.6% Delta -0.129 ≈13% ITM Gamma 0.036 Theta -0.114 Vega 0.022 Open interest 4 Model this put
252	53	22.1%	0.721	$1.60		$0.50	-0.31	26.5%	12	107
Call · $70 In the money Snapshot session Aug 14, 2026 Last $1.60 Breakeven $71.60 Implied vol 22.1% Delta 0.721 ≈72% ITM Gamma 0.174 Theta -0.058 Vega 0.03 Open interest 252 Model this call Put · $70 Snapshot session Aug 13, 2026 Last $0.50 Breakeven $69.50 Implied vol 26.5% Delta -0.31 ≈31% ITM Gamma 0.153 Theta -0.074 Vega 0.03 Open interest 107 Model this put
Underlying $71.11
299	148	32.3%	0.094	$0.20		$5.00	-0.803	48.7%	1	0
Call · $75 Snapshot session Aug 14, 2026 Last $0.20 Breakeven $75.20 Implied vol 32.3% Delta 0.094 ≈9% ITM Gamma 0.059 Theta -0.043 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 48.7% Delta -0.803 ≈80% ITM Gamma 0.065 Theta -0.107 Vega 0.024 Open interest 0 Model this put
305	83	61.8%	0.064	$0.20		$4.75	-0.877	79.1%	20	0
Call · $80 Snapshot session Aug 14, 2026 Last $0.20 Breakeven $80.20 Implied vol 61.8% Delta 0.064 ≈6% ITM Gamma 0.023 Theta -0.062 Vega 0.01 Open interest 305 Model this call Put · $80 In the money Snapshot session Jul 28, 2026 Last $4.75 Breakeven $75.25 Implied vol 79.1% Delta -0.877 ≈88% ITM Gamma 0.029 Theta -0.128 Vega 0.016 Open interest 0 Model this put
10	10	107.1%	0.099	$0.08		$9.10	-0.937	91.4%	2	0
Call · $85 Snapshot session Jul 10, 2026 Last $0.08 Breakeven $85.08 Implied vol 107.1% Delta 0.099 ≈10% ITM Gamma 0.019 Theta -0.147 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 91.4% Delta -0.937 ≈94% ITM Gamma 0.015 Theta -0.088 Vega 0.01 Open interest 0 Model this put
0	1	—	—	$0.05		—	-0.898	140.7%	—	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 140.7% Delta -0.898 ≈90% ITM Gamma 0.014 Theta -0.196 Vega 0.017 Open interest 0 Model this put
0	—	—	—	—		—	-0.915	162%	—	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 162% Delta -0.915 ≈91% ITM Gamma 0.011 Theta -0.2 Vega 0.018 Open interest 0 Model this put
0	—	—	—	—		—	-0.958	153.7%	—	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 153.7% Delta -0.958 ≈96% ITM Gamma 0.007 Theta -0.107 Vega 0.011 Open interest 0 Model this put
0	—	—	—	—		—	-0.968	162.9%	—	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 162.9% Delta -0.968 ≈97% ITM Gamma 0.005 Theta -0.089 Vega 0.005 Open interest 0 Model this put
0	—	—	—	—		—	-0.942	208.4%	—	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 208.4% Delta -0.942 ≈94% ITM Gamma 0.006 Theta -0.187 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