Trading Earnings & IV Crush

Four times a year, every public company has to stand up in front of the market and show its report card. Those announcements move stocks harder than almost anything else — 5%, 10%, sometimes 20% overnight. That is why beginners are drawn to them, and why beginners get hurt by them. The trap is not the move itself. The trap is IV crush: the collapse of an option's price the moment the report comes out, even when the stock moves the way you predicted.

You will learn what earnings season is, why option prices swell before a report and deflate after it, how to read the move the market is already expecting, and the three honest ways to approach an announcement. One of them is simply staying out — often the most professional choice on the board.

What Earnings Season Is

An earnings report is the official scorecard a public company must publish four times a year — once every quarter (one fourth of the year, three months). It shows how much money the company brought in (its revenue, meaning total sales), how much profit it kept (its earnings, the word the whole event is named after), and usually a guidance statement — management's forecast for the coming months.

Earnings season is the few weeks, four times a year, when most companies report in a rush — roughly mid-January, mid-April, mid-July, and mid-October, each lasting about four to six weeks, with a familiar company reporting almost every day.

Here is the part beginners miss: the stock does not react to whether the numbers are "good" or "bad" on their own. It reacts to whether they beat or miss expectations — what professional analysts had already predicted. Record profits can still mean a fall of 8% if the market expected even more; a reported loss can still mean a rise of 6% if everyone expected worse. You are not betting on the company. You are betting against a forecast thousands of professionals helped build — a much harder game than it looks.

Most reports come out before the market opens (9:30 AM Eastern) or after it closes (4:00 PM Eastern). Either way, the big move happens while the market is closed to you — you go to sleep holding one price and wake up holding a very different one. Hold that thought; it matters at gap risk.

Why Implied Volatility Rises Before the Report

You met implied volatility (IV) in Options Part 2: Pricing & the Greeks. Quick refresher: IV is the options market's forecast of how much a stock might move, expressed as a percentage per year, and it is baked into every option's price. High IV means expensive options; low IV means cheap ones. Think of IV as a fear-and-uncertainty price tag — the less sure everyone is about what happens next, the more options cost, because sellers demand more for taking the risk.

An earnings report is a single moment when a huge chunk of uncertainty resolves all at once. In the days before it, nobody knows what the numbers will say; the stock could jump $8 or drop $8 by tomorrow morning. Option sellers look at that coin flip and say, "Insurance against a move like that is going to cost you." So IV climbs — sometimes for two weeks straight — and every option on the stock gets more expensive, even if the stock itself barely moves.

Then the report prints. The numbers are public. The uncertainty is gone. Whether the news was wonderful or terrible no longer matters — the question has been answered, so the insurance is worth little. IV falls off a cliff, often losing a third to half its value in minutes, and every option on the stock gets cheaper at the same time.

That collapse is called IV crush. It happens after essentially every earnings report, win or lose, up or down. It is not a malfunction — it is the uncertainty price tag being ripped off the shelf because the uncertainty no longer exists.

A Worked Example: Right Direction, Losing Trade

This is the most important example in the module. Read it slowly.

A fictional company, XYZ, trades at $100 the afternoon before its earnings report. IV is very high because the report is hours away. You are confident XYZ will beat expectations, so you buy a call:

You buy 1 call contract, strike price $100, expiring soon.
The premium is $3.00. From Options Part 1: The Basics: one contract controls 100 shares, so you pay $3.00 × 100 = $300.
Your breakeven at expiration is strike + premium = $100 + $3.00 = $103.
Notice: with the stock exactly at $100, the call has zero intrinsic value (intrinsic value is what an option is worth if exercised right now — a $100 call on a $100 stock is worth nothing that way). Your entire $3.00 is time value — the price of uncertainty. And uncertainty is exactly what is about to disappear.

Earnings come out that evening. They are good. The next morning XYZ opens at $102 — up $2.00. You were right about the company and the direction. You check your call, expecting a profit.

The call is now worth $2.35. Here is why:

Intrinsic value: the stock is at $102, your strike is $100, so the call is worth $102 − $100 = $2.00 if exercised. That part is real.
Time value: IV has been crushed — say it fell from around 80% before the report to around 35% after. With the big question answered, almost nobody pays for uncertainty anymore, so time value shrank from $3.00 to about $0.35.
Total: $2.00 + $0.35 = $2.35 — $2.35 × 100 = $235 for your contract.

You paid $300. Your call is worth $235. You lost $65 — on a trade where the stock moved up $2 in exactly the direction you called.

Nothing went wrong with your analysis. You paid $3.00 for a ticket whose biggest ingredient was uncertainty, and the uncertainty expired before the stock did. To break even, XYZ needed to open at $103 or higher — the move the price had already demanded. Being right was not enough. You had to be more right than the price already assumed.

The Expected Move: What the Market Is Pricing In

How far does the stock have to move for an option buyer to win? The market publishes its guess: the expected move — the size of the swing, up or down, that option prices are implying for a given window.

The plainest way to read it uses a straddle — from Options Part 3: Strategies: a call and a put bought at the same strike price (usually the strike closest to the stock's price, called at-the-money) with the same expiration. A straddle profits if the stock moves a lot in either direction, so its price is basically the market's bill for "how much movement is coming."

Back to XYZ at $100, with an expiration right after the report:

The $100 call costs $3.00.
The $100 put costs $2.80.
Buy both and the straddle costs $3.00 + $2.80 = $5.80 per share — $580 for the pair of contracts.

That $5.80 is the expected move in dollars: options are priced as if XYZ will move about $5.80 — roughly to $105.80 up or $94.20 down — by that expiration. Those are also the straddle's breakevens ($100 ± $5.80). In plain words: movement inside that range is already paid for. Only a move bigger than that makes the buyer money at expiration.

A quick formula gives the same forecast: expected move ≈ IV × √(days ÷ 365). At 60% IV with 7 days left: 60% × 0.138 ≈ 8.3% — about $8.30 on a $100 stock. Now revisit the worked example: the expected move was roughly $5.80, and XYZ delivered only $2.00 of it. The call buyer bought a $5.80-sized expectation and received a $2.00-sized move. Before any earnings trade, ask: do I honestly expect a move bigger than the one already priced in — and what is my evidence? If the answer is just a feeling, the price is telling you to stand aside.

Gap Risk: The Move You Cannot Stop Out Of

A gap is when a stock opens far away from where it closed, with no trading in between. Earnings are the number-one cause, because the report lands while the market is closed.

Why it matters: beginners lean on the stop-loss order (How Trading Actually Works and Risk Management A–Z), which sells automatically if price falls to a level you choose. A stop works only if the stock actually trades at your stop price. In a gap, it never does.

Concrete example. You own 100 shares of XYZ at $100 — a $10,000 position — with a stop-loss at $97, telling yourself your risk is about $300. Earnings disappoint. XYZ opens at $88. Your stop triggers at the open and fills near $88, not $97, because $97 was never a price anyone traded at that day. Your actual loss: ($100 − $88) × 100 shares = $1,200, not $300. The stop did exactly what stop orders do. What failed was the assumption that an overnight, closed-market event can be controlled with a tool built for open-market hours. No order placed in advance can protect a position from an earnings gap — the only real protection is position size, covered below.

The Classic Trap: Cheap Out-of-the-Money Options

Here is the trade that has probably cost beginners more money than any other. The day before earnings, you spot a call with a strike well above the stock price — an out-of-the-money call — selling for just $0.40. "Only $40 a contract! If the stock pops, this could be worth $5.00!" It feels like a lottery ticket with good odds. It is a lottery ticket — and the odds are worse than they look, for three stacked reasons:

The stock must move a lot just to reach your strike — then keep going past your breakeven.
IV crush hits these options hardest of all. Their entire price is time value; there is no intrinsic value to fall back on. When the crush takes the time value, it takes nearly everything.
They expire soon after the report, leaving no time for the stock to drift your way.

Run the numbers. XYZ at $100. You buy the $110 call for $0.40 — $40. Earnings are great, XYZ pops a strong 6% to $106, a big win for shareholders. Your call? Strike $110, stock $106 — worthless at expiration, and pennies the morning after with IV crushed. Your $40 becomes about $0. The stock rose 6% and you lost essentially 100%.

The Three Honest Approaches

There are exactly three approaches to earnings that Team Alpha considers honest. Everything else is gambling dressed up as strategy.

Approach 1: Stay Out Entirely

This is a real position, and for most Level 2 students it is the correct default. Watch the report, watch the reaction, write down what happened and what you would have done, and risk zero dollars. You are not paid to trade every event: four seasons a year times dozens of companies means hundreds of chances to learn for free. Ten reports observed with a notebook teach more about IV crush than one painful loss — and cost nothing.

Approach 2: Defined-Risk Spreads, Sized Small

If you do trade a report, use a structure whose maximum loss is known and fixed before you enter — a spread (Options Part 3: Strategies) — never a naked option (naked means sold without protection; naked options carry large or unlimited risk, and earnings are the worst place for them).

Rebuild the XYZ idea as a spread. Instead of buying the $100 call alone for $3.00 ($300, all of it exposed to the crush), buy the $100 call for $3.00 and sell the $105 call for $1.20:

Net cost (the debit) = $3.00 − $1.20 = $1.80, so $180 per spread. That is your maximum possible loss — fixed and known.
Maximum profit = the $5.00 width between the strikes − $1.80 debit = $3.20, or $320, if XYZ closes at $105 or above at expiration.
Breakeven = $100 + $1.80 = $101.80.

Why does selling the second call help? The call you sold also loses value in the crush — and when an option you sold gets cheaper, that is money in your pocket. The crush still hurts the call you bought, but it helps the one you sold, so the effects partly cancel. The spread costs less, risks less, and shrugs off part of the crush — which is why experienced earnings traders reach for spreads instead of single options.

Approach 3: Trade After the Report

The report itself is a coin flip. But the hours and days after it are tradeable information. Once the numbers are out and the stock has gapped, uncertainty is gone, IV is back to normal (options fairly priced again), and the market reveals a real direction: does the stock hold its gap, keep pushing, or fade back? Trading the reaction — your normal setups, rules, and size — skips the coin flip and plays only the part where reading the chart actually works. Many professionals never trade the announcement at all. They trade what it caused.

Position Sizing for Binary Events

A binary event has two sharply different outcomes and nothing in between — heads the stock jumps, tails it dumps. Earnings are the textbook example, and your risk plan must shrink for them, because (per the gap section) your normal protections do not work overnight.

Recall the base rule from Risk Management A–Z: risk about 1% of your account per trade — $100 on a $10,000 account. For a binary event, cut that in half or more until you have real experience: 0.5%, or $50.

Now hold this module's trades up to that budget. The single $100 call cost $300 — 3% of the account, three times the normal budget and six times the earnings budget. The $180 spread is better, but still overshoots a $50 event budget. The lesson most people refuse to learn: if the smallest defined-risk version of a trade still risks more than your event budget allows, the correct trade is no trade. That is Approach 1 choosing itself.

Two more sizing rules for events:

Size for the gap, not the plan. With shares, assume the stock can open 10–15% against you, and check that loss against your budget before holding into a report.
One event at a time. Three stocks reporting the same night is not diversification — it is three coin flips at once.

Pre-Earnings Checklist

Run every item before holding any position into a report. If you cannot check a box, that is your answer.

__________ I know the exact date and time of the report (before open or after close), confirmed on the company's investor page or my broker's calendar.
__________ I know the expected move (from the at-the-money straddle price) and have written it down: about $__________ on a $__________ stock.
__________ I can state, in one sentence, why I expect a move bigger than the expected move — evidence, not hope.
__________ My structure has a fixed maximum loss (a spread, or shares sized for a gap). Nothing naked, nothing undefined.
__________ My maximum loss fits my event budget: $__________ (0.5% of my account or less while learning).
__________ I know IV is elevated into the report and have planned for the crush when the numbers print.
__________ My exit plan for each case — big win, small move, disaster gap — is written before the report, not improvised after.
__________ I am not risking money I need, and one bad outcome will not change my life or my week.

Common Mistakes at This Level

Confusing "good earnings" with "stock goes up." The stock trades against expectations, not against zero. Record profits can still produce a red day.
Buying options without comparing your expected move to the priced-in move. If the straddle says $5.80 and you expect $3, you are paying for movement you do not believe is coming.
Reaching for the cheapest contract on the chain. Cheap out-of-the-money options into earnings are cheap because they nearly always expire worthless — and the crush hits them hardest.
Trusting a stop-loss to protect an overnight position. Stops cannot fill at prices the stock never traded at. Gaps jump clean over them.
Trading full size because "this one is a sure thing." There are no sure things in a binary event. Traders who survive ten earnings seasons sized every report like it could go against them — because eventually, one does.
Trading every big name in the same week. Earnings season offers a report every night. Selectivity is the skill; volume is the trap.

Chapter Summary

Earnings season is the four-to-six-week stretch, four times a year, when companies publish their quarterly report cards — revenue, earnings, and guidance.
Stocks react to results versus expectations, not to whether the numbers look good on their own.
IV rises into a report because uncertainty is expensive, and crushes the moment it prints because the uncertainty is gone — win or lose.
The crush can beat a correct forecast: XYZ rose $2 and the $3.00 call still lost $65, because its time value collapsed from $3.00 to $0.35.
The expected move is readable from the at-the-money straddle price; buyers only profit at expiration when the actual move beats it.
Earnings gaps jump over stop-loss orders, so overnight event risk is controlled by position size, not orders.
The three honest approaches: stay out, use defined-risk spreads sized small, or trade the reaction after the report.
Binary events get half your normal risk budget or less — and if even the smallest defined-risk trade is too big, the right trade is no trade.

Check Yourself

Why does implied volatility rise in the days before an earnings report, and why does it fall sharply the moment the report comes out?
In the worked example, XYZ rose from $100 to $102 after good earnings, yet the $100 call bought for $3.00 lost $65. Where did the money go?
The $100 call costs $3.00 and the $100 put costs $2.80 on XYZ. What move is the market pricing in, and what are the straddle's two breakeven prices?
Why does a stop-loss order fail to protect a stock position held through an earnings report?
Name the three honest approaches to an earnings announcement, and the sizing rule that goes with them.

Show answers

Answers: 1) Uncertainty peaks before the report, so sellers charge more and IV climbs; once the numbers are public the uncertainty is gone, so IV collapses — IV crush. 2) The whole $3.00 premium was time value. After the report the call held $2.00 of intrinsic value ($102 stock vs. $100 strike) but only about $0.35 of time value after the crush — worth $2.35, or $235 against $300 paid. 3) The straddle costs $5.80, so the expected move is about $5.80 either way; breakevens are $105.80 and $94.20. 4) The report lands while the market is closed, so the stock can gap straight past the stop price without trading there; the stop fills near the open instead. 5) Stay out entirely; trade defined-risk spreads; or trade the reaction after the report — sizing at half your normal budget or less (about 0.5% of the account while learning), and skipping any trade whose smallest defined-risk version is still too big.