CMS Butterfly Strategy
CMS (CMS Energy Corporation), in the Utilities sector, (Regulated Electric industry), listed on NYSE.
CMS Energy Corporation operates as an energy company primarily in Michigan. The company operates through three segments: Electric Utility; Gas Utility; and NorthStar Clean Energy. The Electric Utility segment is involved in the generation, purchase, distribution, and sale of electricity. This segment generates electricity through coal, wind, gas, renewable energy, oil, and nuclear sources. Its distribution system comprises 263 miles of high-voltage distribution overhead lines; 4 miles of high-voltage distribution underground lines; 4,619 miles of high-voltage distribution overhead lines; 18 miles of high-voltage distribution underground lines; 82,854 miles of electric distribution overhead lines; 10,027 miles of underground distribution lines; and 1,102 substations. The Gas Utility segment engages in the purchase, transmission, storage, distribution, and sale of natural gas, which includes 2,337 miles of transmission lines; 14 gas storage fields; 28,433 miles of distribution mains; and 8 compressor stations.
CMS (CMS Energy Corporation) trades in the Utilities sector, specifically Regulated Electric, with a market capitalization of approximately $21.96B, a trailing P/E of 20.51, a beta of 0.34 versus the broader market, a 52-week range of 68.64-80.36, average daily share volume of 3.3M, a public-listing history dating back to 1973, approximately 8K full-time employees. These structural characteristics shape how CMS stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 0.34 indicates CMS has historically moved less than the broader market, dampening realized volatility and producing tighter expected-move bands per unit of dollar exposure. CMS pays a dividend, which adjusts put-call parity and shifts the ex-dividend pricing across the listed chain.
What is a butterfly on CMS?
A long call butterfly buys one lower-strike call, sells two ATM calls, and buys one higher-strike call, paying a small net debit for a defined-risk position that maxes out if the underlying pins the middle strike at expiration.
CMS snapshot
As of August 14, 2026, spot at $71.25, ATM IV 19.60%, IV rank 3.75%, expected move 5.62%. The butterfly on CMS below is built from the end-of-day chain, with strikes snapped to listed contracts and premiums pulled from the bid/ask midpoint at a 35-day expiry.
Why this butterfly structure on CMS specifically: CMS IV at 19.60% is on the cheap side of its 1-year range, which favors premium-buying structures like a CMS butterfly, with a market-implied 1-standard-deviation move of approximately 5.62% (roughly $4.00 on the underlying). The 35-day window matched to the front-month expiry keeps theta exposure bounded while still capturing the post-snapshot move; longer-dated CMS expiries trade a higher absolute premium for lower per-day decay. Position sizing on CMS should anchor to the underlying notional of $71.25 per share and to the trader's directional view on CMS stock.
CMS butterfly setup
The CMS butterfly below is built from the end-of-day chain, with each option leg priced at the bid/ask midpoint of its listed strike. With CMS at $71.25 on that close, the first option leg uses a $67.69 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed CMS chain at a 35-day expiry; the cross-strike IV skew is reflected directly in the per-leg values rather than approximated. Quantity sizing assumes one contract per option leg (or 100 CMS shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 1 | Call | $67.69 | N/A |
| Sell 2 | Call | $71.25 | N/A |
| Buy 1 | Call | $74.81 | N/A |
CMS butterfly risk and reward
- Net Premium / Debit
- N/A
- Max Profit (per contract)
- Unbounded
- Max Loss (per contract)
- Unbounded
- Breakeven(s)
- None on modeled curve
- Risk / Reward Ratio
- N/A
Max profit equals the wing width minus net debit times 100 (reached when the underlying pins the middle strike); max loss equals the net debit times 100. Two breakevens at lower-wing plus debit and upper-wing minus debit.
CMS butterfly payoff curve
Modeled P&L at expiration across a range of underlying prices for the butterfly on CMS. Each row is one sampled price point from the computed payoff curve; the full curve uses 200 price points internally before being summarized into 10 rows here.
When traders use butterfly on CMS
Butterflies on CMS are pinning bets - traders use them when they expect CMS to settle near a specific level at expiration (often the prior close, a round number, or the max-pain strike) and want defined-risk exposure to that outcome.
CMS thesis for this butterfly
The market-implied 1-standard-deviation range for CMS extends from approximately $67.25 on the downside to $75.25 on the upside. A CMS long call butterfly is a pinning play: it pays maximum at the middle strike if CMS settles there at expiration, with the wing legs capping both the cost and the maximum loss to the net debit. Current CMS IV rank near 3.75% sits in the lower third of its 1-year distribution, where IV often re-expands toward the mean; this favors premium-buying structures and disadvantages premium-selling structures on CMS at 19.60%. As a Utilities name, CMS options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to CMS-specific events.
CMS butterfly positions are structurally neutral / pin (limited-risk, limited-reward); the modeled P&L assumes European-style exercise at expiration and ignores early assignment, transaction costs, dividends paid before expiry on the stock leg (when present), and the bid-ask spread on the listed chain. CMS positions also carry Utilities sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move CMS alongside the broader basket even when CMS-specific fundamentals are unchanged. Always rebuild the position from current CMS chain quotes before placing a trade.
Frequently asked questions
- What is a butterfly on CMS?
- A butterfly on CMS is the butterfly strategy applied to CMS (stock). The strategy is structurally neutral / pin (limited-risk, limited-reward): A long call butterfly buys one lower-strike call, sells two ATM calls, and buys one higher-strike call, paying a small net debit for a defined-risk position that maxes out if the underlying pins the middle strike at expiration. With CMS stock at $71.25 on the most recent close, the strikes shown on this page are snapped to the nearest listed CMS chain strike and the premiums come straight from that session's bid/ask midpoint.
- How are CMS butterfly max profit and max loss calculated?
- Max profit equals the wing width minus net debit times 100 (reached when the underlying pins the middle strike); max loss equals the net debit times 100. Two breakevens at lower-wing plus debit and upper-wing minus debit. For the CMS butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 19.60%), the computed maximum profit is unbounded per contract and the computed maximum loss is unbounded per contract. Live intraday quotes will differ as the chain moves through the trading session.
- What is the breakeven for a CMS butterfly?
- The breakeven for the CMS butterfly priced on this page is no defined breakeven on the modeled curve at expiration, derived from the end-of-day chain's premiums. Breakeven is the underlying price at which the strategy's P&L crosses zero ignoring transaction costs and assignment risk. The CMS market-implied 1-standard-deviation expected move in the same options snapshot is approximately 5.62%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a butterfly on CMS?
- Butterflies on CMS are pinning bets - traders use them when they expect CMS to settle near a specific level at expiration (often the prior close, a round number, or the max-pain strike) and want defined-risk exposure to that outcome.
- How does current CMS implied volatility affect this butterfly?
- CMS ATM IV is at 19.60% with IV rank near 3.75%, which is on the low end of its 1-year range. Premium-buying structures (long call, long put, debit spreads) are relatively cheap in this regime; premium-selling structures collect less credit per unit risk.