FXB Butterfly Strategy
FXB (Invesco CurrencyShares British Pound Sterling Trust), in the Financial Services sector, (Asset Management industry), listed on AMEX.
The Invesco CurrencyShares British Pound Sterling Trust (the "trust") is designed to track the price of the British pound sterling, and trades under the ticker symbol FXB. The British pound sterling is the official currency of the United Kingdom (England, Wales, Scotland and Northern Ireland) and has been the currency of the accounts of the Bank of England since 1694.
FXB (Invesco CurrencyShares British Pound Sterling Trust) trades in the Financial Services sector, specifically Asset Management, with a market capitalization of approximately $84.5M, a beta of 0.28 versus the broader market, a 52-week range of 125.02-133.11, average daily share volume of 28K, a public-listing history dating back to 2006. These structural characteristics shape how FXB etf options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 0.28 indicates FXB has historically moved less than the broader market, dampening realized volatility and producing tighter expected-move bands per unit of dollar exposure. FXB pays a dividend, which adjusts put-call parity and shifts the ex-dividend pricing across the listed chain.
What is a butterfly on FXB?
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 FXB snapshot
As of May 14, 2026, spot at $128.83, ATM IV 9.00%, IV rank 1.05%, expected move 2.58%. The butterfly on FXB 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 FXB specifically: FXB IV at 9.00% is on the cheap side of its 1-year range, which favors premium-buying structures like a FXB butterfly, with a market-implied 1-standard-deviation move of approximately 2.58% (roughly $3.32 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 FXB expiries trade a higher absolute premium for lower per-day decay. Position sizing on FXB should anchor to the underlying notional of $128.83 per share and to the trader's directional view on FXB etf.
FXB butterfly setup
The FXB 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 FXB near $128.83, the first option leg uses a $122.00 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed FXB 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 FXB shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 1 | Call | $122.00 | $6.35 |
| Sell 2 | Call | $129.00 | $0.53 |
| Buy 1 | Call | $135.00 | $0.01 |
FXB butterfly risk and reward
- Net Premium / Debit
- -$531.00
- Max Profit (per contract)
- $120.76
- Max Loss (per contract)
- -$531.00
- Breakeven(s)
- $127.31, $130.69
- Risk / Reward Ratio
- 0.227
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.
FXB butterfly payoff curve
Modeled P&L at expiration across a range of underlying prices for the butterfly on FXB. 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% | -$531.00 |
| $28.49 | -77.9% | -$531.00 |
| $56.98 | -55.8% | -$531.00 |
| $85.46 | -33.7% | -$531.00 |
| $113.95 | -11.6% | -$531.00 |
| $142.43 | +10.6% | -$431.00 |
| $170.91 | +32.7% | -$431.00 |
| $199.40 | +54.8% | -$431.00 |
| $227.88 | +76.9% | -$431.00 |
| $256.37 | +99.0% | -$431.00 |
When traders use butterfly on FXB
Butterflies on FXB are pinning bets - traders use them when they expect FXB 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.
FXB thesis for this butterfly
The market-implied 1-standard-deviation range for FXB extends from approximately $125.51 on the downside to $132.15 on the upside. A FXB long call butterfly is a pinning play: it pays maximum at the middle strike if FXB settles there at expiration, with the wing legs capping both the cost and the maximum loss to the net debit. Current FXB IV rank near 1.05% 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 FXB at 9.00%. As a Financial Services name, FXB options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to FXB-specific events.
FXB 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. FXB positions also carry Financial Services sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move FXB alongside the broader basket even when FXB-specific fundamentals are unchanged. Always rebuild the position from current FXB chain quotes before placing a trade.
Frequently asked questions
- What is a butterfly on FXB?
- A butterfly on FXB is the butterfly strategy applied to FXB (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 FXB etf trading near $128.83, the strikes shown on this page are snapped to the nearest listed FXB chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
- How are FXB 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 FXB butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 9.00%), the computed maximum profit is $120.76 per contract and the computed maximum loss is -$531.00 per contract. Live intraday quotes will differ as the chain moves through the trading session.
- What is the breakeven for a FXB butterfly?
- The breakeven for the FXB butterfly priced on this page is roughly $127.31 and $130.69 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 FXB market-implied 1-standard-deviation expected move is approximately 2.58%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a butterfly on FXB?
- Butterflies on FXB are pinning bets - traders use them when they expect FXB 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 FXB implied volatility affect this butterfly?
- FXB ATM IV is at 9.00% with IV rank near 1.05%, 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.