Earnings Trades: What to Know About IV Crush
Earnings announcements send options haywire, inflating prices before and crushing them after. Knowing how that works protects you from the most common and painful surprise in all of options.
- What implied volatility is, in plain terms
- Why options balloon before earnings and crush after
- Why you can be right on direction and still lose
- The two honest ways to play an earnings announcement
Here is a story that has burned more new options traders than any other. A company reports earnings Thursday. You are sure the stock moves big, so you buy a straddle to catch it either way. Thursday night, the stock jumps. You were right! You log in Friday morning grinning... and your trade is down money.
How? You called the move and still lost. The culprit is a force you have not formally met yet, and it rules everything around an earnings announcement. Its name is implied volatility, and understanding it is what separates traders who survive earnings from those who get ambushed by it.
Why Options Balloon Before Earnings
Implied volatility, or IV, is the size of the move the market expects, baked right into option prices. When a big move is anticipated, options get expensive. When calm is expected, they get cheap. IV is the dial that sets how inflated or deflated all the premiums are.
Right before earnings, nobody knows what the report will say, so the expected move is huge and IV spikes. Every option on the stock balloons. A straddle that might normally cost $1,000 could run $1,500 into the announcement, not because the stock moved, but because everyone is bracing for it to.
The Crush: Why Being Right Can Still Lose
The moment the report comes out, the mystery is solved. Whatever the number is, it is now known, and the expected move collapses to nearly nothing. IV crashes back down, fast. This is the famous IV crush, and it deflates every option on the stock almost instantly.
Now you see how you lost. You paid the inflated $1,500 price. The stock jumped, which helped, but the IV crush deflated your options at the same time. If the actual move was smaller than the $1,500 price was already betting on, the air leaking out of your options outweighs your directional gain. You were right about direction and still lost to the crush.
That is the trap: into earnings, the price already bakes in a big move. You do not just need a move, you need a move bigger than the expensive one everyone already paid for.
Two Ways to Play Earnings
If you choose to trade an announcement at all, there are two honest stances, and both are advanced.
There is also a third, perfectly respectable choice: do not hold through earnings at all. Plenty of steady traders close their positions before an announcement and reopen after the dust settles, sidestepping the whole circus. Knowing the crush exists is what lets you make that call on purpose.
When I was advising clients, "right on the stock, wrong on the volatility" was the most heartbreaking loss to explain, because it feels so unfair. Once you understand IV crush, it stops being a mystery and becomes something you can plan around, or simply avoid.
- Implied volatility (IV) is the expected move baked into option prices.
- Before earnings, IV spikes and all options balloon in price.
- After the report, IV crush collapses prices fast, even if the stock moved.
- A buyer can be right on direction and still lose, because the crush outweighs the gain.
- You can buy (need a giant move), sell (ride the crush, risk a surprise), or simply sit it out.
Pop Quiz
Three quick questions to lock it in. Pick an answer and the explanation shows up right away.
What does implied volatility measure?
IV is the expected move priced into options. High IV makes options expensive because a big move is anticipated; low IV makes them cheap.
You bought a straddle before earnings, the stock jumped, but you lost. Why?
You paid an inflated, high-IV price. After the report, IV crushed and deflated your options. If the real move was smaller than the price already implied, the crush outweighs your directional gain.
Who does IV crush help?
Sellers collect the fat, pre-earnings premium and profit as IV crush deflates it. Their danger is a move so big it overruns the credit they took in.
Bottom Line
Earnings turn the volatility dial up, then slam it down. Implied volatility spikes before the report and crushes right after, which is why you can call the direction perfectly and still lose money you thought was safe. Buyers fight the crush, sellers ride it, and many traders wisely sit the announcement out entirely. The key is that you now see the force at work, so it can never ambush you the way it ambushes everyone else.
Next up: IV Rank and IV Percentile. If high IV makes options expensive and low IV makes them cheap, the obvious question is: how do I know which one I am looking at right now? The next lesson gives you the exact tools to measure it.