What Happens to Option Prices Around Earnings

Every covered call seller who's held a position through an earnings announcement has seen something surprising: the stock moves, and the option premium doesn't respond the way you'd expect. Sometimes the stock gaps up 5% and the call you sold is worth less than before earnings. Sometimes the stock drops and the call falls almost to zero immediately. Something is happening to options pricing around earnings that doesn't follow the normal rules — and understanding it explains why the earnings blackout exists.

That something is implied volatility, and specifically, what happens to it before and after an earnings event.

The IV Build-Up Before Earnings

In the weeks before a company reports earnings, implied volatility on its options rises steadily. Traders who want exposure to the earnings event buy options — calls if they expect a positive surprise, puts if they expect negative, both if they just expect a large move (a straddle). This buying pressure drives option premiums higher.

By the time earnings day arrives, implied volatility is often elevated significantly above its normal range. An AAPL call that would normally carry $2.50 in premium might show $3.80 or $4.20 in the week before the report. The market is pricing in the possibility of a large binary move — a 5-8% gap overnight in either direction.

For covered call sellers observing this from the outside, the elevated pre-earnings premium can look like an opportunity. If premiums are higher than usual, shouldn't this be a great week to sell?

This is the trap. The elevated premium isn't free income — it's the market pricing in the actual risk of a large gap.

The IV Crush After Earnings

Once the earnings report is released, the uncertainty resolves. Whatever the company reported — beat, miss, or in-line — the market now knows the outcome. The binary event is over.

Implied volatility collapses immediately. The options market no longer needs to price in the possibility of a large unknown move; the move has already happened (or not happened). This collapse in IV is called the IV crush, and it's predictable: it happens after almost every earnings event regardless of what the report contains.

Here's what IV crush means for option prices:

If AAPL was at $190 before earnings with IV elevated, and reports earnings with a mild beat that pushes the stock to $195, you might expect the call option's value to have increased (stock moved up). But if IV crushes from 45% to 28% simultaneously, the option might actually be worth less than it was before earnings — even though the stock moved in the "right" direction. The volatility component of the pricing fell more than the delta component gained.

This is confusing and counterintuitive the first time you encounter it. The stock moved favorably and your call declined in value. IV crush is the explanation.

What This Means for Covered Call Sellers

The IV crush dynamic cuts in two directions depending on whether you're holding a position through earnings or starting fresh after.

If you held a covered call through earnings: Your option's value dropped sharply after the event due to IV crush. If the stock didn't move dramatically, you may have captured the bulk of your remaining premium in a single event rather than over the remaining days of the cycle. That's a positive outcome — the premium decay accelerated. But if the stock gapped sharply upward (a large earnings beat), your call moved deep in the money before IV crush had time to help you. The assignment risk rose fast.

This second scenario — the upside gap on an earnings beat — is the one the blackout exists to prevent. A stock that jumps 10% overnight on an earnings beat will push an out-of-the-money covered call far into the money, potentially triggering assignment at a price below the new market value. You sold at your strike plus your original premium; the stock is now well above both.

If you're looking at the week after earnings: IV crush means premiums are now lower than they were pre-earnings. The heightened premium is gone; you're back to normal IV levels. For covered call sellers, the post-earnings window often produces less premium than the weeks before — the volatility premium that inflated prices has been resolved. This is the normal state, and it's fine — it's just not the elevated state the pre-earnings period showed.

The AAPL Example

AAPL reports earnings four times per year. In the simulation data covering 2023-2025, AAPL's backtested yield dropped from 8.7% annually (without earnings blackouts) to 5.3% annually (with blackouts) — a reduction of roughly 39%.

Most of that reduction isn't just from missing cycles. It's from missing the cycles where earnings-week premiums were elevated. The weeks surrounding each AAPL earnings report showed some of the highest premiums of the year — and the highest risk of adverse outcomes. The blackout cuts both: it prevents you from capturing elevated premiums and it prevents the corresponding adverse assignments.

The math: AAPL held four earnings events per year, each with a blackout window. Missing eight cycles per year (the blackout period around each report) reduces the number of active trades significantly. But the trades you do execute during calm, non-earnings windows are systematically lower risk. The yield reduction from 8.7% to 5.3% is the honest cost of that discipline.

(The full yield comparison is explored in The One Week You Don't Sell — And Why It's Worth It.)

Why IV Crush Is Predictable But Still Risky

IV crush after earnings is essentially guaranteed — implied volatility almost always falls sharply once the earnings uncertainty is resolved. What's not predictable is the magnitude and direction of the stock's move.

The pre-earnings IV elevation is the market's estimate of expected move size. If the market expects a ±6% move on AAPL earnings and AAPL moves ±4%, the actual volatility was lower than expected — IV crush is severe. If AAPL moves ±8% (larger than expected), the realized volatility exceeded implied — IV crush is milder and the option maintains more value.

For covered call sellers, the dangerous scenario is a move larger than expected in the upward direction: stock gaps up 8-10% when the market expected 5%, pushing the option deep in the money before IV crush can reduce the option's value. This combination — large upside gap plus elevated pre-earnings IV that hasn't had time to crush — can push a call option to very high value, creating significant assignment pressure.

The earnings blackout is calibrated at 14 days before the report date. This window ensures that any option recommended by the engine expires before the earnings date — meaning the position closes before IV starts building substantially and before any gap risk materializes.

Earnings Risk Beyond the Held Position

One nuance worth understanding: IV builds on all expirations that cover an earnings event, not just the nearest one. If AAPL reports in three weeks, options expiring both in two weeks and in six weeks will show elevated IV (since both expirations cover the event period).

The blackout logic accounts for this by looking at whether the earnings date falls within the expiration window, not just whether it's in the upcoming week. A covered call that expires in two weeks but has an earnings event at day 10 of that window is still a potentially problematic position — the stock could gap sharply with 4 days remaining on the option, deep in the money, and no time to react.

This is why the blackout is described as "14 days before" the earnings date: the system avoids recommending any position where the earnings event falls within the expiration window, regardless of exactly how many days separate the recommendation date from the report date.

(See also: Why Premiums Change Week to Week for the broader implied volatility context, and What VIX Actually Tells You About Your Premiums for how market-level volatility compares to stock-specific IV events.)

Frequently Asked Questions

What if I miss an earnings week and the stock doesn't move much — was the blackout the right call?

Yes. The blackout isn't about predicting which earnings reports will cause large moves — it's about avoiding a category of risk where the outcome is unpredictable and the downside is severe. Even "uneventful" earnings can produce 3-4% moves on macro-sensitive days, and the occasional 8-10% gap is what the strategy is specifically avoiding. Across many companies and many earnings cycles, the blackout consistently produces better risk-adjusted outcomes than selling through earnings.

Can I tell from the options chain that IV is elevated before earnings?

Yes. Compare the implied volatility on options expiring before earnings vs. those expiring after. Options expiring before the event will show notably lower IV than those expiring after it. The post-earnings options are pricing in the gap risk; the pre-earnings options are not. This disparity in IV across expirations is the classic earnings IV signal.

Does IV crush happen on all stocks equally?

No. Higher-beta, more volatile stocks (NVDA, TSLA) tend to see larger IV build-ups before earnings and larger crushes after. Stable, defensive stocks (utilities, consumer staples) see smaller IV elevation around earnings. The AAPL 39% yield reduction from the blackout would look different for NVDA (potentially larger impact, since NVDA can move 10-15% on earnings) vs. a consumer staples name (smaller impact, since moves are more modest).

What should I do the week after earnings when premiums are lower than usual?

Execute the recommendations that appear. Post-earnings, IV is back to normal and the strategy runs as usual. If a position clears the floor, sell it. If IV has compressed enough that the premium falls below the floor threshold, accept the Skip. The post-earnings period is unremarkable — it's just the normal covered call environment without the elevated risk.

Does the earnings blackout protect me from all earnings-related losses?

It protects you from new positions that cover earnings events. If you have an open position that was opened before the blackout window and the stock's earnings date moves earlier than expected, you might find yourself holding through earnings inadvertently. The engine monitors earnings dates continuously and will generate appropriate guidance if a position's situation changes, but unexpected restatements of earnings dates are a real (if rare) scenario.