The trade felt perfect. A stock was reporting earnings, the options were cheap enough, and the move after the announcement was exactly what the trader expected — direction, magnitude, everything. Yet the position still lost money. That moment of confusion is where most options traders first encounter implied volatility crush, and it rewires how they think about pricing forever.

Implied volatility — IV for short — is the market's forward-looking estimate of how much a price might move. It is baked into every options premium. Before earnings, nobody knows what the company will announce, so uncertainty is high and IV inflates dramatically. The moment results drop, that uncertainty evaporates. The market no longer needs to price the unknown. IV collapses almost instantly, and it takes option premiums down with it.

CONCEPTIV crush happens because options pricing uncertainty — not just price movement — and earnings remove that uncertainty overnight.
WARNINGBuying options before earnings and being right on direction still produces a loss if IV collapses faster than the price moves.
KEY IDEAThe earnings premium embedded in an option's price is essentially a one-time charge for holding through the unknown event.

Here is a concrete example. Suppose a stock trades at $50. With earnings due tomorrow, a at-the-money call option costs $3.00. That premium reflects an IV of around 80%. After the announcement the stock jumps 4% to $52 — a solid move. But IV collapses back to 30%, its normal level. That same call is now worth roughly $2.10. The trader was right on direction, right on magnitude, and still lost $0.90 per contract because the IV crush overwhelmed the gain from the price move.

20% 40% 60% 80% -5d -4d -3d -2d -1d ER +1d IV Crush Implied Volatility IV Behaviour Around Earnings

Experienced options traders use this mechanic in both directions. Some sell options before earnings specifically to collect the inflated premium, knowing crush will help them regardless of which way the stock moves — provided the actual move stays within the priced range. Others avoid buying options outright before announcements and instead use spreads to reduce the net premium at risk. Understanding how implied volatility is constructed, and how options premium decomposes after a catalyst, is foundational to any strategy involving events. The broader statistical concept is well documented under volatility in finance.

Being right on a trade and losing money is the sharpest possible teacher. IV crush is why direction alone never tells the full story with options.

This content is for educational purposes only and does not constitute financial product advice. Past performance is not indicative of future results. Profit Logic Ltd (ACN 688 669 936) accepts no responsibility for errors or omissions in this content or anywhere on this website. Always seek advice from a licensed financial adviser before making investment decisions.