Quick Answer: To trade the post-earnings IV crush, identify stocks where the “implied move” is significantly higher than the historical realized move. Traders can profit by selling premium via credit spreads or iron condors before the announcement, or by using calendar spreads to capitalize on the faster decay of front-month implied volatility.

The most predictable event in options trading is the collapse of implied volatility (IV) following an earnings announcement. While most retail traders lose money buying “lotto tickets,” professional traders use IV Crush as a mechanical edge.

Here is your guide to trading the post-earnings volatility collapse using SpotGamma metrics.

Step 1: Quantify the “Expected Move”

Before the opening bell, check the SpotGamma Equity Hub for the stock in question. We provide the “Implied Move” based on the straddle price. If the market is pricing in an 8% move, but the stock historically only moves 4% on earnings, you have a high-probability “Short Volatility” setup.

Step 2: Choose Your Strategy (Credit over Debit)

Because IV Crush acts as a massive headwind for long options, you should generally favor defined-risk credit strategies:

Iron Condors: Ideal for stocks expected to stay within the “implied move” range. You profit as the “wings” lose value due to IV collapse.
Short Vertical Spreads: Used if you have a slight directional bias but want the IV crush to work in your favor.
Calendar Spreads: Long the back-month, short the front-month. This captures the aggressive crush in the expiring weekly options while maintaining a long volatility position in the further-dated contracts.

Step 3: Monitor the “Gamma Flip”

Earnings often trigger a “Gamma Flip.” If a stock was in deep negative gamma before earnings and the news is “better than feared,” the subsequent short-covering can be amplified by market makers flipping to positive gamma. Use the SpotGamma TRACE heatmap to see if the stock is moving back into a supportive “Blue Zone” after the initial crush.

Step 4: The 15-Minute Rule

The most violent part of the IV crush happens in the first 15-30 minutes of the trading session following the news. Traders who sold premium should look to take profits quickly as the “Vega” component of the option’s price evaporates. Don’t wait for the stock to drift; the IV crush is your primary source of alpha.

Summary Checklist for Earnings Volatility

Compare Implied Move vs. Historical Realized Move.
Identify Key Gamma Levels (Support/Resistance) in Equity Hub.
Execute defined-risk credit spreads to benefit from Vega decay.
Exit once the initial volatility collapse is complete.

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