Broken wing butterfly, explained

From standard butterfly to broken wing

Understanding the broken wing butterfly requires a firm grip on the standard butterfly first. A standard long call butterfly buys one call at a lower strike (A), sells two calls at a middle strike (B), and buys one call at a higher strike (C), where A, B, and C are equally spaced. If the spacing is $5 wide: A at $95, B at $100, C at $105. The equal spacing between A and B and between B and C creates a symmetric tent-shaped payoff profile. The maximum profit sits at the body (B) at expiry, and maximum loss (the net debit) occurs at either extreme.

The problem with the standard butterfly is that the debit required to enter the position creates a drag on returns. You need the stock to close reasonably close to B at expiry to overcome that upfront cost. A $1.50 debit on a $95/$100/$105 butterfly means the stock must close between $96.50 and $103.50 to generate any profit at all.

The broken wing butterfly eliminates or reduces that debit by widening one wing. Instead of buying the $105 call as the upper wing, the trader skips the $105 strike entirely and buys the $110 call. The four-leg result: buy 1 $95 call, sell 2 $100 calls, buy 1 $110 call. The lower wing ($95 to $100) remains $5 wide. The upper wing ($100 to $110) is now $10 wide. This is the broken wing, the upper side is literally wider than the lower side, breaking the symmetry.

Widening the upper wing changes the entry cost significantly. The $110 call is cheaper than the $105 call (it is farther out of the money), so less premium is spent on the upper wing. The two short $100 calls still collect the same credit. Net result: the position costs less to enter than the standard butterfly, often producing a small net credit instead of a net debit. That credit is the core appeal of the strategy.

Mechanics and the skip-strike structure

The term "skip-strike butterfly" describes the structure precisely. On the wide wing side, one strike is skipped between the body and the long option. In the $95/$100/$110 example above, the $105 strike is skipped on the upper side. The conventional naming convention calls this a "1-by-2-by-1" butterfly with a skipped strike on the upper wing, or informally a "broken-wing call butterfly with the skip on the upside."

How many strikes you skip determines the entry cost and the risk profile. Skipping one $5-wide strike on a liquid stock with moderate implied volatility might produce a credit of $0.20 to $0.50. Skipping two strikes might produce a larger credit of $0.50 to $1.50, but also increases the risk on the wide-wing side proportionally. Most practitioners stick with a one-strike skip to balance the credit benefit against the added risk.

The same logic applies to put broken wing butterflies. A standard put butterfly on a $100 stock might use $95/$100/$105 (buy $105 put, sell 2 $100 puts, buy $95 put, equal $5 wings). A put broken wing butterfly skips one strike on the lower side: buy $105 put, sell 2 $100 puts, buy $90 put. The lower wing is now $10 wide instead of $5 wide. The $90 put costs less than the $95 put, producing a smaller net debit or a net credit. Risk shifts to the downside: if the stock falls sharply below $90, the position loses money beyond the credit collected.

The P&L map: where you make and lose money

Walking through the P&L at expiry for a call broken wing butterfly with strikes at $95/$100/$110 and a $0.20 credit per share illustrates every key region of the payoff profile.

When the stock closes below $95 at expiry, all three legs expire worthless or out of the money. The lower long call ($95) expires worthless. The two short calls ($100) expire worthless. The upper long call ($110) expires worthless. Net result: the trader keeps the $0.20 credit collected at entry. The entire sub-$95 region is profitable by exactly the credit amount. This is the key advantage over the standard butterfly: the broken wing butterfly loses nothing below the lower strike if it was entered for a credit.

As the stock climbs from $95 toward $100, the lower long call gains intrinsic value. At $100 exactly, the lower long call has $5 of intrinsic value; the short calls and upper long call are all at the money or out of the money. Maximum profit = $5 lower wing width + $0.20 credit = $5.20 per share, or $520 per contract set. This is the peak of the tent.

Between $100 and $110, the two short calls start accumulating intrinsic value while the lower long call's intrinsic value stays fixed at $5 (approximately). The net position value decreases as the stock rises through this region. At $110, the upper long call begins capping the loss, but the structure has already given back most of the maximum profit.

Above $110, the position has one net uncovered short call: two short $100 calls minus one long $110 call minus one long $95 call. As the stock rises above $110, this uncovered short call generates losses at a rate of approximately $1 per $1 move in the stock. The position's breakeven on the upside is at $110 plus the lower wing width ($5) plus the credit ($0.20) = approximately $115.20. Above $115.20, the position loses money. The loss is defined at any given stock price: for every dollar above $110, the loss is approximately $1 per share beyond the profit zone, capped by the structure width.

The practical P&L map: below $95, keep the $0.20 credit; between $95 and approximately $115.20, the position is profitable with a peak at $100; above $115.20, the position loses money at the rate of roughly $1 per $1 move, up to the maximum loss of the upper wing width minus the credit ($10 minus $0.20 = $9.80 per share).

Call versus put broken wing butterfly: choosing the directional tilt

The broken wing butterfly is an inherently directional structure because the risk sits asymmetrically on one side. That makes the choice between a call BWB and a put BWB a genuine directional bet, not a symmetric range-bound play.

A call broken wing butterfly with the wide wing on the upside is a mildly bearish or neutral structure. The best outcome is the stock closing at the body at expiry, which requires the stock to stay near or below the body strike. If the stock rallies aggressively above the upper long call, the position loses. Most traders who use call BWBs have a view that the stock will stay below the body or retreat toward it, they are selling a risk range above the market.

A put broken wing butterfly with the wide wing on the downside is a mildly bullish or neutral structure. The trader wants the stock to stay near or above the body strike at expiry. Risk sits below the lower long put, so the trader is accepting downside risk in exchange for the credit. Premium sellers who already want to be bullish-tilted, say, traders who would have sold a cash-secured put, sometimes structure a put BWB instead because it collects similar premium with a defined maximum loss on the downside (unlike a naked short put).

A useful heuristic: match the wide wing side to the direction you are willing to take risk. If you are comfortable with downside exposure (bullish tilt), use a put BWB with the skip on the lower side. If you are comfortable with upside exposure (bearish or neutral tilt), use a call BWB with the skip on the upper side.

Greeks: theta, delta, and gamma across the structure

The broken wing butterfly has a more nuanced Greeks profile than the standard butterfly because the asymmetry in wing width creates corresponding asymmetry in how delta and gamma behave.

Theta is the primary reason traders use the strategy. A call BWB entered for a credit has positive theta at entry when the stock is near the body: the position benefits from time passing without a large stock move. As expiry approaches, theta accelerates for the near-the-money short options. This acceleration is why most practitioners hold the position for the middle portion of the DTE cycle (30 to 45 days at entry, targeting a close or roll at 21 DTE) rather than holding to expiry.

Delta is directionally biased by the asymmetric structure. A call BWB with a wider upper wing is slightly negative delta at entry when the stock is near the body, the position benefits modestly from a stock decline. The amount of negative delta depends on the spacing and the specific strikes relative to the stock. A put BWB with a wider lower wing is slightly positive delta, benefiting modestly from a stock rise. This mild directional tilt is part of why traders use BWBs rather than symmetric butterflies when they have a directional lean.

Gamma is negative at the body (short gamma) when the stock is near the short strikes, and the short gamma exposure is slightly asymmetric: the smaller wing side has tighter gamma exposure than the wider wing side. The practical implication is that the position can withstand a moderate move toward the narrower-wing side without catastrophic loss, but a sharp move toward the wider-wing side accelerates losses faster than a standard butterfly would.

Vega is slightly negative at the body, meaning the position benefits when implied volatility decreases after entry. This makes the broken wing butterfly a reasonable choice in moderately high-IV environments where the trader expects IV to decline or stay flat, similar to the theta gang logic of collecting premium when IV is elevated. The asymmetric wing structure means that an IV spike is less damaging than in a short straddle, because the long options on both sides provide partial vega protection.

Strike selection for the broken wing butterfly

Strike selection drives the entry credit, the maximum profit, and the risk profile more than any other decision in constructing the broken wing butterfly. A few guidelines that experienced practitioners follow consistently.

Body placement should reflect the expected center of the stock's range over the position's life. If the stock is at $100 and the trader expects it to trade between $95 and $105 over the next 30 days, placing the body at $100 (ATM) is the natural choice. If the trader has a mild directional lean, expecting the stock to drift slightly lower toward $97, placing the body at $95 to $97 (slightly below ATM for a call BWB) shifts the maximum profit zone to align with the expected center of gravity.

Narrow wing selection (the short side, where maximum profit territory sits) should be 5 to 10 points wide on most stocks, or one to two standard option strike intervals. Narrower wings produce higher maximum profit relative to the risk but require the stock to be closer to the body at expiry to achieve that profit. Wider wings create a broader plateau of profitable outcomes but reduce the maximum profit amount.

Wide wing selection (the broken side) is typically one strike width wider than the narrow wing, producing a 1-skip structure. Going wider than one skip increases the credit collected and increases the risk proportionally. A two-skip structure (lower wing $5, upper wing $15) collects significantly more credit but exposes the trader to a $15 maximum loss on the wide side instead of $10. Most retail practitioners find a one-skip structure (narrow wing and wide wing differing by one strike interval) the most practical balance.

Strike liquidity is a non-negotiable requirement. The broken wing butterfly involves four legs (or three legs for a put BWB using put spreads), and slippage on illiquid strikes compounds across all legs. Sticking to strikes with open interest above 500 and tight bid-ask spreads (under $0.10 on a standard equity option) is essential for getting the credit target without overpaying on execution.

DTE selection and the decay cycle

The broken wing butterfly benefits most from selling premium in the 30-to-45 DTE zone, the same range where standard theta gang strategies are most efficient. At 30 to 45 DTE, theta decay on the short body options is accelerating meaningfully, but the gamma risk of being too close to expiry (the final 10 to 14 days) is not yet severe.

Entry at 45 DTE allows the trader to target a 21 DTE close or roll if the position has achieved 50 percent of the maximum profit. The standard management rule is: close the profitable half of the position at 21 DTE regardless of whether maximum profit has been achieved. Holding through the final three weeks exposes the position to gap risk and final-week gamma spikes that can rapidly move the stock through the body and into the loss zone.

Entering a broken wing butterfly closer than 21 DTE is generally inadvisable unless the trader is deliberately constructing a 0DTE or 1DTE structure for a very short-term range-bound trade. Short-duration BWBs require more active gamma management and are better suited to index products with very tight bid-ask spreads (SPX, SPY) than to individual stocks where slippage on all four legs can consume most of the small credit target.

Earnings events are an important DTE planning consideration. Entering a BWB with an earnings event inside the position's planned holding period exposes the trader to a gap-on-earnings move that could instantly violate the body and move the stock toward the wide-wing risk zone. Traders who want to use a BWB on a stock approaching earnings typically either time the entry for after the earnings date (so the holding period is entirely in a post-earnings low-IV environment) or choose a structure where the body is close enough to the expected post-earnings range that the earnings move itself places the stock at the target level.

Reading options flow for broken wing butterfly activity

Identifying broken wing butterfly activity in the options tape requires recognizing the asymmetric multi-strike signature. A standard butterfly appears as volume at three equidistant strikes in the same expiry with a 1:2:1 ratio (one lot at each outer strike, two lots at the body). A broken wing butterfly appears as the same 1:2:1 volume ratio, but the outer strikes are not equidistant: one wing is wider than the other.

RadarPulse's confluence panel surfaces situations where multiple strikes in the same expiry are active simultaneously. When the panel shows elevated activity at three strikes in one expiry with a larger gap between the body and one outer strike than the other, the pattern is consistent with a broken wing butterfly structure. The aggressor side matters: a BWB entered for a credit will show the inner two body strikes on the ask side (selling the body) and the outer strikes on the bid side (buying the wings). A BWB being closed will show the reverse.

Institutional use of broken wing butterflies is common in volatility-targeting funds and market-neutral strategies. When RadarPulse surfaces ELEVATED-scored activity across three strikes with asymmetric spacing on a large-cap equity or index ETF, institutional BWB construction is a plausible explanation. These flows tend to appear in liquid underlyings (SPY, QQQ, major tech names) where multi-leg structures can be executed without excessive slippage. The score reflects the unusual nature of the combined activity relative to background volume, a score above ELEVATED threshold suggests the position is large enough relative to typical daily activity to merit attention.

Ask Radar can help interpret specific multi-strike flow patterns on any ticker by analyzing whether the strike spacing, volume ratios, and DTE are consistent with a BWB or another butterfly variant. Providing the ticker, the active strikes, and the expiry date in the query gives Radar enough context to assess the structural probability and explain what the position would imply about the institutional view on near-term price range.

The credit-entry advantage in detail

The credit entry is the defining feature that separates the broken wing butterfly from the standard butterfly in practical use, and its implications are worth examining carefully.

When you enter a standard butterfly for a $1.50 debit, you need the stock to be between $96.50 and $103.50 at expiry to break even (using the $95/$100/$105 example). The position loses $1.50 if the stock is anywhere below $95 or above $105. The loss occurs regardless of direction: a big rally and a big selloff produce the same maximum loss.

When you enter a call broken wing butterfly at $95/$100/$110 for a $0.20 credit, you need the stock to be above $95 at expiry to break even, that is, the stock can fall to zero and the position still keeps the $0.20 credit. The position's risk is entirely on the upside. If the stock rallies above approximately $115.20, the position starts losing money. Below $95, the credit is yours regardless of how far the stock falls. Between $95 and $115.20, you make money, with maximum profit at $100.

The practical difference is significant. The BWB loses on only one side, and that loss is proportional to a meaningful move that gives the trader time to react. A call BWB on a $100 stock does not start losing money until the stock is above $115, a 15 percent rally from the current price. A standard butterfly on the same stock starts losing the moment the stock closes more than $1.50 above $105 or more than $1.50 below $95. The BWB's wider loss-free zone on the narrow-wing side is a real structural advantage for traders who have a directional lean that makes them comfortable holding the risk on the wide-wing side.

The flip side of this advantage is that the credit amount is small. A $0.20 credit on a four-leg structure with a maximum profit of $5.20 is a 3.8 percent return on the maximum risk (the $10 wide-wing loss possibility minus the credit = $9.80 net risk). That return looks modest. But achieved in 30 to 45 days and potentially repeated monthly, the annualized return on capital employed is meaningful, and the zero-loss below the narrow strike is a real advantage over selling a naked put, which would require more capital and has unlimited downside below the put strike.

Comparison with related strategies

The broken wing butterfly occupies a specific niche that distinguishes it from its nearest competitors: the standard butterfly, the iron condor, and the short vertical spread.

Against the standard butterfly, the BWB trades symmetry for a lower or zero entry cost and a directional tilt. The standard butterfly is the right choice when the trader has no directional view and wants equal risk on both sides. The BWB is better when the trader is willing to accept risk on one side in exchange for the credit entry and a zero-loss zone on the other.

Against the iron condor, the BWB concentrates risk on one side rather than distributing it across two sides. An iron condor collects premium on both the call side and the put side, accepting risk of a move in either direction beyond the wings. A call BWB only accepts risk on the upside and collects essentially all its premium from the asymmetric wing structure. A trader who is confident the stock will not rally aggressively but is less certain about the downside is better served by a call BWB than an iron condor, the iron condor adds unnecessary risk on the put side for a trader with a bearish directional lean.

Against a short vertical spread (credit put spread or credit call spread), the BWB adds a defining long option on the narrow side that eliminates the directional risk on that side entirely. A credit call spread (sell lower-strike call, buy higher-strike call) loses if the stock rallies above the short strike. A call BWB adds a long call below the body to create a profit zone centered on the body, which the vertical spread does not have. The BWB pays for this additional structure by reducing the credit collected, but gains the benefit of a profit zone rather than a directional bet.

Position sizing and risk management

Position sizing for the broken wing butterfly should be anchored to the maximum loss on the wide-wing side, not to the credit collected or the net debit. This is a critical distinction from how standard butterfly trades are often sized.

For a call BWB with a $10 wide upper wing and a $0.20 credit per share, the maximum loss per contract set is $9.80 per share ($10 minus $0.20 credit) times 100 shares = $980. At 2 to 3 percent of a $50,000 account, the maximum position risk is $1,000 to $1,500, which supports one to two contract sets of this structure. Many traders size BWBs slightly more aggressively than naked puts (because the defined risk is an improvement) but less aggressively than credit spreads of the same width (because the BWB's risk is concentrated rather than distributed).

Portfolio correlation is relevant for traders running multiple BWBs simultaneously. A portfolio of five call BWBs on different tech stocks is not five independent positions: in a market rally, all five positions are challenged simultaneously on the upside. True diversification means mixing call BWBs (upside risk) with put BWBs (downside risk) or pairing BWBs on sectors with low correlation to each other. Running only call BWBs creates a net short-vega, net short-upside portfolio that behaves like a concentrated volatility short in a sustained bull market.

Stop-loss discipline is more important for BWBs than for standard butterflies because the wide-wing risk accumulates continuously as the stock moves through the wide-wing zone. The 200 percent rule, close the position when the mark-to-market loss equals twice the target profit, provides a mechanical discipline that prevents denial-cycle holding. A call BWB targeting $0.50 profit per share is closed when it reaches a $1.00 loss per share, regardless of how confident the trader is that the stock will reverse.

When broken wing butterflies work best and when they fail

Broken wing butterflies perform best in range-bound environments with elevated implied volatility. The credit entry is most generous when IV is high (option premiums are large), and the position profits when the stock stays near the body through the accelerating theta decay of the final weeks. High-IV environments that are subsequently calm, the period after a volatility spike resolves, are historically the most favorable for BWB strategies.

They fail most visibly during sustained directional moves. A call BWB entered at $100 with a $110 upper long strike fails if the stock rallies 20 percent in a month. The loss on the uncovered upside accumulates at roughly $1 per $1 of stock move above the breakeven. Unlike a standard butterfly where both directions produce the same capped loss, the BWB's asymmetric structure means a strong move in the wrong direction can produce losses meaningfully larger than the maximum profit target.

Volatility expansions at entry are a particularly hazardous environment. Entering a call BWB when IV is rising rapidly is functionally selling premium into an expensive market, which sounds attractive, but the delta of the short body options and the gamma risk of the uncovered upside can accelerate losses faster than the credit cushion can absorb. The better practice is to enter BWBs when IV has stabilized or is declining, not when it is actively rising.

Liquidity deterioration is an operational risk in BWBs. The four-leg structure requires simultaneous execution on options that may have wide bid-ask spreads, particularly in the far-OTM wide-wing strike. If the structure cannot be executed for a credit (or near-zero debit) at entry, the defining advantage of the strategy is gone, and the trader would be better off with a simpler two-leg vertical spread. Always use limit orders for the entire structure and do not chase fills that consume most of the credit.

Risks and disclaimer

The broken wing butterfly carries defined but meaningful risk on the wide-wing side. If the stock makes a large, sustained move toward the wide wing, losses can equal the wing width minus the credit collected, a significantly larger amount than the credit suggests. The strategy is not a "free money" structure: the credit is compensation for accepting asymmetric risk, not a riskless income stream. Implied volatility expansions, gap moves at earnings, and sustained directional trends all create environments where the BWB underperforms. Managing the position actively and using disciplined stop-loss rules is essential. RadarPulse provides market data and analytics for informational and educational purposes only, not financial advice. Options trading involves substantial risk of loss and is not suitable for every investor.

Frequently asked questions

What is a broken wing butterfly?

A broken wing butterfly (also called a skip-strike butterfly) is a modified butterfly spread where one wing is wider than the other. By skipping one strike on the far wing, the structure can be entered for a small credit instead of a net debit. The tradeoff is that the side with the wider wing carries defined but nonzero risk if the stock moves strongly in that direction.

How does a call BWB differ from a put BWB?

A call broken wing butterfly has a wider upper wing, placing risk on the upside. A put broken wing butterfly has a wider lower wing, placing risk on the downside. Traders use call BWBs when they expect the stock to stay flat or decline, and put BWBs when they expect the stock to stay flat or rise. The directional tilt of the risk side should match the directional lean the trader is comfortable holding.

Can a broken wing butterfly be entered for a credit?

Yes. Skipping one strike on the wide wing means the long option on that side costs less premium than the standard butterfly's symmetric outer strike. That cost reduction often produces a net credit when combined with the two short body options. The credit size depends on the underlying's implied volatility and the specific strike spacing. In practice, a one-skip BWB on a liquid equity with moderate-to-high IV produces a credit of $0.10 to $0.50 per share.

What is the maximum loss on a broken wing butterfly?

For a call BWB, maximum loss is the wide upper wing width minus the credit collected (or plus the debit paid). For a $10 wide upper wing entered for a $0.20 credit, maximum loss is $9.80 per share. This occurs when the stock is significantly above the upper long call strike at expiry, where the uncovered short call portion generates losses. For a put BWB, maximum loss is the wide lower wing width minus the credit, occurring when the stock is well below the lower long put strike.

How is the broken wing butterfly different from an iron condor?

An iron condor collects premium on both the call side and the put side, accepting risk on both sides if the stock moves beyond the wings in either direction. A broken wing butterfly accepts risk on only one side and creates a profit zone centered on the body. The BWB is more appropriate when the trader has a directional lean (comfort with risk on one side only); the iron condor is more appropriate when the trader wants symmetric exposure to a range-bound environment.

When should you close a broken wing butterfly?

The standard practice is to close or roll the position at 21 DTE if it has not yet achieved the target profit, to avoid final-week gamma risk. If the position has achieved 50 percent or more of maximum profit before 21 DTE, close it early and redeploy the capital. The 200 percent rule provides a stop-loss discipline: close when the mark-to-market loss reaches twice the target profit amount. Never hold a BWB through an earnings event inside the holding period if the position has significant risk on the wide-wing side.

Related guides