MSB Butterfly Strategy
MSB (Mesabi Trust), in the Basic Materials sector, (Steel industry), listed on NYSE.
Mesabi Trust, a royalty trust, engages in iron ore mining business in the United States. The company was incorporated in 1961 and is based in New York, New York.
MSB (Mesabi Trust) trades in the Basic Materials sector, specifically Steel, with a market capitalization of approximately $395.3M, a trailing P/E of 28.50, a beta of 0.31 versus the broader market, a 52-week range of 22.55-42.38, average daily share volume of 51K, a public-listing history dating back to 1987. These structural characteristics shape how MSB stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 0.31 indicates MSB has historically moved less than the broader market, dampening realized volatility and producing tighter expected-move bands per unit of dollar exposure. MSB pays a dividend, which adjusts put-call parity and shifts the ex-dividend pricing across the listed chain.
What is a butterfly on MSB?
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.
Current MSB snapshot
As of May 15, 2026, spot at $28.75, ATM IV 64.90%, IV rank 20.75%, expected move 18.61%. The butterfly on MSB below is built from the same end-of-day chain, with strikes snapped to listed contracts and premiums pulled from the bid/ask midpoint at a 34-day expiry.
Why this butterfly structure on MSB specifically: MSB IV at 64.90% is on the cheap side of its 1-year range, which favors premium-buying structures like a MSB butterfly, with a market-implied 1-standard-deviation move of approximately 18.61% (roughly $5.35 on the underlying). The 34-day window matched to the front-month expiry keeps theta exposure bounded while still capturing the post-snapshot move; longer-dated MSB expiries trade a higher absolute premium for lower per-day decay. Position sizing on MSB should anchor to the underlying notional of $28.75 per share and to the trader's directional view on MSB stock.
MSB butterfly setup
The MSB 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 MSB near $28.75, the first option leg uses a $27.31 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed MSB chain at a 34-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 MSB shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 1 | Call | $27.31 | N/A |
| Sell 2 | Call | $28.75 | N/A |
| Buy 1 | Call | $30.19 | N/A |
MSB 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.
MSB butterfly payoff curve
Modeled P&L at expiration across a range of underlying prices for the butterfly on MSB. 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 MSB
Butterflies on MSB are pinning bets - traders use them when they expect MSB 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.
MSB thesis for this butterfly
The market-implied 1-standard-deviation range for MSB extends from approximately $23.40 on the downside to $34.10 on the upside. A MSB long call butterfly is a pinning play: it pays maximum at the middle strike if MSB settles there at expiration, with the wing legs capping both the cost and the maximum loss to the net debit. Current MSB IV rank near 20.75% 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 MSB at 64.90%. As a Basic Materials name, MSB options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to MSB-specific events.
MSB 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. MSB positions also carry Basic Materials sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move MSB alongside the broader basket even when MSB-specific fundamentals are unchanged. Always rebuild the position from current MSB chain quotes before placing a trade.
Frequently asked questions
- What is a butterfly on MSB?
- A butterfly on MSB is the butterfly strategy applied to MSB (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 MSB stock trading near $28.75, the strikes shown on this page are snapped to the nearest listed MSB chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
- How are MSB 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 MSB butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 64.90%), 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 MSB butterfly?
- The breakeven for the MSB butterfly priced on this page is no defined breakeven on the modeled curve at expiration, derived from end-of-day chain premiums. Breakeven is the underlying price at which the strategy's P&L crosses zero ignoring transaction costs and assignment risk. The current MSB market-implied 1-standard-deviation expected move is approximately 18.61%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a butterfly on MSB?
- Butterflies on MSB are pinning bets - traders use them when they expect MSB 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 MSB implied volatility affect this butterfly?
- MSB ATM IV is at 64.90% with IV rank near 20.75%, 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.