Butterfly Spread Optimizer

Buying a call/put requires significant price movement to profit and works against time decay. A butterfly profits if price stays stable at your target, costs much less (often 90% less than outright options), and has limited maximum loss. The trade-off is you need precision - price must be near your target strike at expiry. Butterflies are ideal when you expect low volatility and can identify a specific settlement level.

Breakeven points are simple: Lower breakeven = lower wing strike + net debit paid. Upper breakeven = upper wing strike - net debit paid. For example, an 8,400/8,500/8,600 butterfly with 15 points debit has breakevens at 8,415 and 8,585. You profit anywhere between these levels, with maximum profit exactly at 8,500.

No, your maximum loss is strictly limited to the net debit paid. Even if the market crashes or spikes dramatically, your loss cannot exceed your initial investment. This defined risk is one of the butterfly's key advantages, making it safer than many other options strategies for the same capital deployed.

Both work, but they serve different purposes. Weekly butterflies are for short-term precision plays (expiry-week targeting, pinning expectations). Monthly butterflies are for longer-term price targets with more time for your thesis to develop. Weekly butterflies are cheaper but require more precision and have faster gamma acceleration. On the ASX, weeklies are listed on the XJO and ~20 active stocks; less liquid names only offer monthly series. Start with monthly (10-20 DTE) for learning.

If price moves away from your middle strike, the butterfly loses value. Beyond your wing strikes, you've reached maximum loss (the debit paid). However, between the wings and middle, you have partial profit or small loss. The good news: your loss is capped at the initial debit regardless of how far price moves. You can choose to exit early for a partial loss rather than holding to expiry.

Due to put-call parity, they have nearly identical payoffs at the same strikes. Choose based on: 1) Liquidity - whichever has tighter bid-ask spreads at your strikes, 2) Fill quality - test which gets better execution, 3) Convention - calls for at/above market targets, puts for below, 4) Assignment - on stock ETOs, prefer the structure where the short body is OTM going into expiry to limit early-assignment risk. In practice, check both and use whichever offers a better entry price.

Close before expiry when: 1) You've achieved 50-70% of maximum profit (good capture, avoid gamma risk), 2) Price has moved to a wing and is unlikely to return (cut loss while some value remains), 3) 1-2 DTE with acceptable profit (gamma risk not worth the remaining potential), 4) Your thesis changes (target no longer valid). For XJO, also remember the index option stops trading at noon on expiry and settles at the opening auction - so 'holding to the close' is not an option. Only hold through expiry with high conviction and experience managing gamma.

Higher IV makes the wings cheaper relative to the body, reducing your entry cost. This is because IV inflates far-OTM options (wings) more in absolute terms but the sold ATM options benefit more proportionally. Enter butterflies when IV is elevated (percentile >30%) for better cost-to-wing ratios. After entry, falling IV helps your position as the sold middle options lose value faster. Track the S&P/ASX 200 VIX (A-VIX, code XVI) for the overall vol regime - it tends to run lower than emerging-market vol indices.

Yes, several adjustments exist: 1) Roll the body - if price moved up, roll the entire butterfly higher; if down, roll lower, 2) Convert to condor - add another butterfly to widen the profit zone, 3) Convert to broken wing - close one wing to add directional bias, 4) Simply close for a partial loss before max loss. Evaluate whether the adjustment cost is worth the improved probability versus just taking the loss.

Max pain is the strike price where total option buyer losses are maximized (and option seller gains maximized). Markets sometimes gravitate toward max pain at expiry due to hedging dynamics. Placing butterfly bodies at max pain can improve probability, especially for weekly expiry plays. Calculate max pain using open interest data - the strike where most calls expire worthless above and most puts expire worthless below. Note ASX open interest is thinner than in larger markets, so treat the signal as supportive rather than decisive.

1) Identify the probable settlement range based on technical/statistical analysis, 2) Place butterflies at key levels within the range (round numbers, pivot points, max pain), 3) Size each according to settlement probability - higher probability strikes get larger allocation, 4) Calculate aggregate Greeks to ensure portfolio risk is acceptable, 5) Total debit across all butterflies is your maximum risk, 6) Monitor correlation - adjacent butterflies have overlapping exposures. A typical array: 3-5 butterflies covering a 200-400 point range on the XJO.

Expiry-day gamma is extreme at the middle strike - tiny moves cause large P&L swings. Management approaches: 1) For XJO, remember it settles at the opening auction (OPIC) and stops trading at noon, so pre-commit to exit in the morning or accept the morning settlement; 2) For stock ETOs (which trade to the close and can be assigned), use a trailing stop in percentage terms; 3) Accept only 70-80% of max profit to exit early; 4) If holding, monitor continuously and be prepared for swings; 5) Size small enough that even a full loss from peak profit is acceptable. Pin risk (oscillation around the strike) is emotionally challenging.

1) Identify the expected post-event settlement zone (not just direction), 2) Enter 2-5 days before the event when IV is elevated and rising, 3) Place the body at the expected settlement, not the current price, 4) Size small (1-2% of capital) due to the binary nature, 5) Consider multiple butterflies if uncertain about the exact level, 6) Plan for both scenarios: if the event moves to target (take profit), if it moves away (pre-commit to a loss level). For Australia, the most relevant events are the RBA cash rate decision (2:30pm AEST), the Federal Budget, quarterly CPI, and company results (released pre-open or under a halt). Edge comes from buying cheap wings pre-event and benefiting from IV crush + price stability afterwards.

Compare: 1) Execution cost - calculate theoretical value and the bid-ask spread for each, 2) Margin treatment - some brokers favour iron butterfly margin efficiency, 3) Leg risk - a 4-leg iron fly has more execution risk than a 3-leg butterfly, 4) Closing ease - which can be closed faster when needed? 5) Assignment - on stock ETOs the iron fly's short straddle is American and can be assigned if pinned ITM. Run both through your broker's order system to get real quotes. Iron butterflies often fill better at ATM due to higher liquidity. Track execution quality over time to determine which works better for your broker and timing.

Track: 1) Win rate by configuration (wing width, DTE, IV at entry), 2) Average winner vs average loser by configuration, 3) Profit factor by entry day and time, 4) Performance by target selection method (max pain, technical, round number), 5) Exit type analysis - which exit method (profit target, stop, time) produces the best results? 6) Gamma management efficiency - how much did early exits leave on the table vs save from losses? After 50+ trades, identify which configurations show a statistical edge (p < 0.10) and scale those while eliminating underperformers.