ERO Butterfly Strategy
ERO (Ero Copper Corp.), in the Basic Materials sector, (Copper industry), listed on NYSE.
Ero Copper Corp., a base metals mining company, engages in the exploration, development, and production of mining projects in Brazil. It engages in the production and sale of copper concentrate from the MCSA Mining Complex located within the Curaçá Valley, northeastern Bahia state, as well as gold and silver byproducts. The company also holds a 100% interest in the Boa Esperança property, a copper development project located within southeastern Pará state; and NX Gold property located in Mato Grosso state. Ero Copper Corp. was incorporated in 2016 and is headquartered in Vancouver, Canada.
ERO (Ero Copper Corp.) trades in the Basic Materials sector, specifically Copper, with a market capitalization of approximately $3.23B, a trailing P/E of 11.09, a beta of 1.56 versus the broader market, a 52-week range of 12.79-39.799, average daily share volume of 1.3M, a public-listing history dating back to 2017, approximately 4K full-time employees. These structural characteristics shape how ERO stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 1.56 indicates ERO has historically moved more than the broader market, amplifying both the directional payoff and the realized volatility relative to an index-equivalent position. The trailing P/E of 11.09 is on the value side, where IV often compresses outside event windows because forward growth expectations are already discounted into the share price.
What is a butterfly on ERO?
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 ERO snapshot
As of May 15, 2026, spot at $27.30, ATM IV 66.50%, IV rank 74.59%, expected move 19.06%. The butterfly on ERO 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 ERO specifically: ERO IV at 66.50% is rich versus its 1-year range, which makes a premium-buying ERO butterfly relatively expensive in absolute-cost terms, with a market-implied 1-standard-deviation move of approximately 19.06% (roughly $5.20 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 ERO expiries trade a higher absolute premium for lower per-day decay. Position sizing on ERO should anchor to the underlying notional of $27.30 per share and to the trader's directional view on ERO stock.
ERO butterfly setup
The ERO 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 ERO near $27.30, the first option leg uses a $25.94 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed ERO 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 ERO shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 1 | Call | $25.94 | N/A |
| Sell 2 | Call | $27.30 | N/A |
| Buy 1 | Call | $28.67 | N/A |
ERO 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.
ERO butterfly payoff curve
Modeled P&L at expiration across a range of underlying prices for the butterfly on ERO. 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 ERO
Butterflies on ERO are pinning bets - traders use them when they expect ERO 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.
ERO thesis for this butterfly
The market-implied 1-standard-deviation range for ERO extends from approximately $22.10 on the downside to $32.50 on the upside. A ERO long call butterfly is a pinning play: it pays maximum at the middle strike if ERO settles there at expiration, with the wing legs capping both the cost and the maximum loss to the net debit. Current ERO IV rank near 74.59% sits in the upper third of its 1-year distribution, which historically reverts; this raises the bar for premium-buying structures and lowers it for premium-selling structures on ERO at 66.50%. As a Basic Materials name, ERO options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to ERO-specific events.
ERO 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. ERO positions also carry Basic Materials sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move ERO alongside the broader basket even when ERO-specific fundamentals are unchanged. Always rebuild the position from current ERO chain quotes before placing a trade.
Frequently asked questions
- What is a butterfly on ERO?
- A butterfly on ERO is the butterfly strategy applied to ERO (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 ERO stock trading near $27.30, the strikes shown on this page are snapped to the nearest listed ERO chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
- How are ERO 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 ERO butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 66.50%), 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 ERO butterfly?
- The breakeven for the ERO 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 ERO market-implied 1-standard-deviation expected move is approximately 19.06%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a butterfly on ERO?
- Butterflies on ERO are pinning bets - traders use them when they expect ERO 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 ERO implied volatility affect this butterfly?
- ERO ATM IV is at 66.50% with IV rank near 74.59%, which is elevated relative to its 1-year range. Premium-selling structures (covered call, cash-secured put, iron condor) generally look more attractive when IV rank is high; premium-buying structures (long call, long put, debit spreads) are more expensive in that regime.