IV Crush Play

Volatility Strategies Intermediate Australia ASX200 XJO BHP CBA CSL NAB WBC ANZ WES RIO MQG WOW TLS

Neutral to slightly directional - primarily targeting IV contraction post-event

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Quick Reference

Strategy Type Event-Based Volatility (Short Vega, Targeting IV Collapse)
Market Outlook Neutral to slightly directional - primarily targeting IV contraction post-event
Risk Profile Defined or undefined depending on structure chosen
Reward Profile Profits from predictable IV collapse after known events
Time Horizon Very short term (1-7 days typically, over the event)
Iv Environment Enter when IV is ELEVATED pre-event; profit as IV CRUSHES post-event
Breakeven Varies by structure; wider than normal due to IV cushion

Australia Market Details

Primary Instruments Major ASX equities with liquid options around earnings: BHP, CBA, CSL, NAB, WBC, RIO, WOW
Earnings Seasons February (half-year) and August (full-year) are peak ASX earnings periods
Asic Compliance ASIC regulated; Level 2-3 for defined risk, Level 4-5 for naked structures
Contract Size 100 shares for equity options; A$10 per point for index options
Trading Hours 10:00 AM - 4:00 PM AEST; earnings often released before market open
Expiry Options Monthly expiries; choose expiration just after earnings date
Settlement Physical delivery for equity options (American-style)
Tax Treatment Short-term premium income typically taxed as trading income
Franking Credits Not applicable - pure options play, no share ownership
Margin Requirements Varies by structure; iron condors require less than naked straddles
Typical Iv Crush 30-50% IV contraction typical for major ASX stocks post-earnings
Event Timing Most ASX companies report before market open; some report after close

Frequently Asked Questions

Can I lose money even with IV crush?

Yes. If the stock moves MORE than the implied move, the movement loss can exceed the IV crush benefit. For example, if options imply a 4% move but the stock moves 8%, you'll likely lose despite the crush. This is the main risk of IV crush plays.

How much does IV typically crush after earnings?

For major ASX stocks like BHP, CBA, and CSL, IV typically crushes 30-50% post-earnings. A stock with 40% pre-earnings IV might drop to 22-28% post-earnings. This varies by stock - some crush more consistently than others.

What's the best structure for beginners?

Iron condors or credit spreads are best for beginners because they have defined (limited) risk. You know your maximum loss before entering. Avoid naked straddles/strangles until you have experience managing unlimited risk positions.

Should I hold until expiration?

No - exit shortly after the event (typically the morning after). Once IV crushes, your edge from the event is gone. Holding longer exposes you to regular theta/gamma dynamics without the IV crush benefit. Take profits and move to the next opportunity.

How do I know if a stock is a good IV crush candidate?

Look for: High IV Rank (>70%) pre-earnings, consistent historical crush (30%+ every quarter), implied move ≥ historical average move, and liquid options with tight spreads. Track your own data over time to identify the best candidates.

How do I use volatility skew in IV crush plays?

Puts typically have higher IV than calls (skew). You can exploit this by selling more puts or using structures like Jade Lizard that capture the rich put premium. Post-earnings, skew often compresses, adding to your profit if you've sold the expensive side.

Should I trade every earnings event?

No - be selective. Only trade when: IV Rank is high (>70%), implied move ≥ historical average, the stock has consistent crush history, and liquidity is adequate. Forcing trades on mediocre setups reduces your edge and increases risk.

What if earnings are released after market close?

After-close earnings mean the stock reacts in the next day's pre-market. Your exit would be the morning after the announcement - same principle, just different timing. Be aware of overnight gap risk and ensure your structure can handle the next day's opening print.

How many IV crush positions should I have at once?

Limit to 4-6 concurrent positions with total risk < 20% of account. Diversify across sectors to avoid correlation - don't have 4 bank earnings trades simultaneously. Peak earnings season (Feb/Aug in Australia) requires discipline about concentration.

Can I use IV crush plays on index options (XJO)?

Yes, around RBA decisions and other macro events. XJO options see elevated IV before RBA announcements, and IV typically crushes post-decision. Same principles apply: sell when IV is elevated, exit after the event.

How do I backtest IV crush strategies?

Collect historical data: pre-event IV, post-event IV, stock price moves for each earnings event. Simulate your strategy (entry rules, structure, exit rules) on this data. Calculate win rate, average P&L, profit factor, and max drawdown. Validate on out-of-sample data.

What's the optimal strike selection for IV crush?

Balance vega exposure (crush capture) against movement cushion. ATM has highest vega but tightest profit zone. 16-delta strikes balance both. Using breakevens at 1.0-1.2× implied move provides cushion while maintaining meaningful vega exposure.

How do calendar spreads work for IV crush?

Sell the front-month options (high IV, contains event) and buy back-month options (lower IV). Post-event, front-month IV crushes while back-month holds relatively better. You profit from the term structure normalization. Risk: front-month must crush more than back-month.

Should I add directional bias based on fundamental analysis?

Only if you have genuine conviction and can accept being wrong. Directional bias adds profit if correct but removes the 'neutral' safety. Most practitioners find neutral IV crush plays more consistent - let the vol edge work without directional risk.

How do first reporters in a sector affect later reporters?

First reporters resolve sector-level uncertainty. If ANZ beats, bank sector sentiment improves, affecting NAB/WBC/CBA IV and outcomes. Later reporters face primarily stock-specific risk (less sector tail risk). This can make later reporters more predictable for IV crush plays.

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