How to build an earnings IV crush setup with a short front straddle and a long back straddle
This page walks through a classic earnings volatility structure: sell the front-month at-the-money straddle that directly captures the event, then buy a longer-dated at-the-money straddle or slightly out-of-the-money strangle behind it. The goal is simple: short the richest event volatility, keep some longer-dated optionality, and profit most when the post-earnings move is smaller than the implied move priced into the front expiration.
Why this setup exists
Into earnings, the expiration that contains the announcement often carries the richest implied volatility because it directly prices the binary event risk. After the report is released, that uncertainty usually collapses quickly, which can cause a sharp drop in option premiums even if the stock barely moves.
A front-short / back-long calendarized volatility structure tries to isolate that dislocation. You are effectively selling the most inflated volatility in the front expiration while buying more durable time value in a later expiration, which can soften the damage if the move is not contained.
Base construction
This example uses an ATM calendarized straddle. A slightly OTM back-month strangle is the lower-cost variation.
Part of the event-week ATM short straddle. This is where you are most exposed to front-end IV collapse and to immediate post-earnings gamma.
Together with the short call, this forms the front ATM straddle and harvests the richest event premium.
This keeps longer-dated upside optionality and back-month vega on the book after the event.
This keeps longer-dated downside optionality and prevents the trade from being pure naked short front premium.
Lower-cost alternative: instead of buying the back-month 620 straddle, you can buy a slightly OTM strangle, such as the 630 call and 610 put. That reduces debit but also reduces the amount of immediate protection if the stock gaps hard.
Illustrative pricing before earnings
Assume NFLX is trading at $620 before earnings. The front 7 DTE 620 straddle is priced at $38 total, while the back 35 DTE 620 straddle costs $49 total. That means the structure is entered for an $11 net debit, and the trade thesis is that the front expiration is carrying disproportionately rich event volatility relative to the back month.
Net entry debit: $11.00 or $1,100 per 1-lot before commissions.
What happens after a small move
Now assume the company reports, the stock opens at $634, and the realized move is only $14. That is well inside the roughly ±$38 move implied by the front straddle, so the front options should lose a large amount of event premium very quickly. This is the outcome the trade is designed to monetize.
The back-month options will also reprice lower in volatility terms, but because they still contain meaningful time value, their collapse is usually less violent. That difference in repricing is what gives the setup a chance to work.
Only a modest move higher relative to the front implied range.
Event premium collapses sharply after the announcement.
Back month also cheapens, but usually not as violently.
Back value less front liability after the event.
P&L walkthrough
You paid $11.00 to enter the trade. After earnings, the package is now worth about $22.00. That means the mark-to-market gain is approximately +$11.00, or about +$1,100 per 1-lot before transaction costs.
Initial net debit to establish the structure.
Estimated value after the modest move and front-end crush.
Rough gain per share equivalent, or $1,100 per options set.
The actual move stayed well inside the premium embedded in the front straddle.
ATM back straddle vs slightly OTM back strangle
The ATM back straddle is the more protective and more expensive version. It gives you stronger long gamma and vega exposure after the event, but it also raises the entry debit. A slightly OTM back strangle reduces cost and can improve return on capital if the move is modest, though it gives you less immediate protection if the stock gaps hard through one side.
Better hedge quality, cleaner symmetry, stronger protection on a larger move.
Cheaper to own, but the hedge does less work immediately if the move is violent.
How to think about the Greeks
- Vega: You are short the most event-sensitive vega in the front expiration and long slower-decaying back-month vega.
- Theta: The short front options decay fastest, especially once the event has passed.
- Gamma: This is the danger zone. Front-week short gamma can hurt badly if the realized move is much larger than expected.
- Delta: The trade starts near delta-neutral, but a post-earnings gap can quickly create directional exposure.
When this setup tends to work best
- The front event premium is unusually rich. The trade depends on the front expiration being overpriced relative to the back month.
- The stock is liquid. Tight markets matter because you are trading four legs and spreads can erode edge quickly.
- The realized move stays contained. This is the big one. The smaller the move relative to the implied move, the better the setup tends to behave.
- You have an exit plan. Most traders do not hold this structure indefinitely; they monetize the crush once the event passes.
Main risks
If the stock moves far beyond the implied range, short front gamma can overwhelm the benefit of the IV crush.
The hedge is not immune. If back-month IV also compresses meaningfully, the long leg helps less than expected.
Four-leg structures can leak P&L through wide bid/ask spreads, especially near the event.
Once the event edge is harvested, the trade can morph into a different exposure than the one you intended to own.
Practical construction checklist
- Choose a liquid earnings name with active weekly options.
- Identify the expiration that directly captures the earnings event.
- Price the front ATM straddle to estimate the market-implied move.
- Compare that implied move with your view of likely realized movement.
- Sell the front ATM straddle only if you are comfortable with event risk and liquidity.
- Buy the back ATM straddle, or a slightly OTM back strangle if you want to lower the debit.
- Define your exit ahead of time: next morning, same day, or after the first volatility reset.
Bottom line
This structure is not really a directional earnings bet. It is a relative-volatility trade that tries to exploit the fact that the front expiration often overprices the event more aggressively than the back month. If the stock moves less than the market feared, the short front straddle can deflate faster than the longer-dated hedge, producing a favorable post-earnings revaluation.
Educational only. Options involve risk, including the potential for significant losses, and multi-leg earnings trades require careful execution and position sizing.