EWUS Butterfly Strategy
EWUS (iShares MSCI United Kingdom Small-Cap ETF), in the Financial Services sector, (Asset Management industry), listed on CBOE.
The iShares MSCI United Kingdom Small-Cap ETF seeks to track the investment results of an index composed of small-capitalization U.K. equities.
EWUS (iShares MSCI United Kingdom Small-Cap ETF) trades in the Financial Services sector, specifically Asset Management, with a market capitalization of approximately $42.4M, a beta of 1.15 versus the broader market, a 52-week range of 38.02-45.04, average daily share volume of 5K, a public-listing history dating back to 2012. These structural characteristics shape how EWUS etf options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 1.15 places EWUS roughly in line with broader market moves, so the strategy payoff and realized volatility track the index-equivalent baseline. EWUS pays a dividend, which adjusts put-call parity and shifts the ex-dividend pricing across the listed chain.
What is a butterfly on EWUS?
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 EWUS snapshot
As of May 15, 2026, spot at $40.97, ATM IV 26.30%, IV rank 2.73%, expected move 7.54%. The butterfly on EWUS 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 63-day expiry.
Why this butterfly structure on EWUS specifically: EWUS IV at 26.30% is on the cheap side of its 1-year range, which favors premium-buying structures like a EWUS butterfly, with a market-implied 1-standard-deviation move of approximately 7.54% (roughly $3.09 on the underlying). The 63-day window matched to the front-month expiry keeps theta exposure bounded while still capturing the post-snapshot move; longer-dated EWUS expiries trade a higher absolute premium for lower per-day decay. Position sizing on EWUS should anchor to the underlying notional of $40.97 per share and to the trader's directional view on EWUS etf.
EWUS butterfly setup
The EWUS 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 EWUS near $40.97, the first option leg uses a $39.00 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed EWUS chain at a 63-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 EWUS shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 1 | Call | $39.00 | $2.68 |
| Sell 2 | Call | $41.00 | $1.26 |
| Buy 1 | Call | $43.00 | $0.56 |
EWUS butterfly risk and reward
- Net Premium / Debit
- -$71.50
- Max Profit (per contract)
- $110.41
- Max Loss (per contract)
- -$71.50
- Breakeven(s)
- $39.72, $42.29
- Risk / Reward Ratio
- 1.544
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.
EWUS butterfly payoff curve
Modeled P&L at expiration across a range of underlying prices for the butterfly on EWUS. 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.
| Underlying Price | % From Spot | P&L at Expiration |
|---|---|---|
| $0.01 | -100.0% | -$71.50 |
| $9.07 | -77.9% | -$71.50 |
| $18.13 | -55.8% | -$71.50 |
| $27.18 | -33.7% | -$71.50 |
| $36.24 | -11.5% | -$71.50 |
| $45.30 | +10.6% | -$71.50 |
| $54.36 | +32.7% | -$71.50 |
| $63.41 | +54.8% | -$71.50 |
| $72.47 | +76.9% | -$71.50 |
| $81.53 | +99.0% | -$71.50 |
When traders use butterfly on EWUS
Butterflies on EWUS are pinning bets - traders use them when they expect EWUS 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.
EWUS thesis for this butterfly
The market-implied 1-standard-deviation range for EWUS extends from approximately $37.88 on the downside to $44.06 on the upside. A EWUS long call butterfly is a pinning play: it pays maximum at the middle strike if EWUS settles there at expiration, with the wing legs capping both the cost and the maximum loss to the net debit. Current EWUS IV rank near 2.73% 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 EWUS at 26.30%. As a Financial Services name, EWUS options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to EWUS-specific events.
EWUS 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. EWUS positions also carry Financial Services sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move EWUS alongside the broader basket even when EWUS-specific fundamentals are unchanged. Always rebuild the position from current EWUS chain quotes before placing a trade.
Frequently asked questions
- What is a butterfly on EWUS?
- A butterfly on EWUS is the butterfly strategy applied to EWUS (etf). 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 EWUS etf trading near $40.97, the strikes shown on this page are snapped to the nearest listed EWUS chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
- How are EWUS 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 EWUS butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 26.30%), the computed maximum profit is $110.41 per contract and the computed maximum loss is -$71.50 per contract. Live intraday quotes will differ as the chain moves through the trading session.
- What is the breakeven for a EWUS butterfly?
- The breakeven for the EWUS butterfly priced on this page is roughly $39.72 and $42.29 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 EWUS market-implied 1-standard-deviation expected move is approximately 7.54%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a butterfly on EWUS?
- Butterflies on EWUS are pinning bets - traders use them when they expect EWUS 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 EWUS implied volatility affect this butterfly?
- EWUS ATM IV is at 26.30% with IV rank near 2.73%, 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.