Why good results sometimes crash a stock, what IV crush does to your options, and how to trade earnings season without gambling. A practical guide from IITA, Kharghar.
Trading During Results Season: Stop Trying to Predict, Start Managing Risk
Four times a year, a few hundred companies report their numbers within a few weeks of each other, and the market briefly loses its composure. Stocks gap 12% overnight. Options that cost ₹80 become worth ₹6 by lunchtime. People who’ve been steadily profitable for months give back a quarter of their year in four sessions.
Trading during results season is not more profitable than trading the rest of the year. It’s more volatile, which people mistake for the same thing.
Here’s what actually goes on, and how to handle it.
The Only Thing That Really Matters
A company reports a 40% jump in profit. The stock falls 8%.
Every beginner who sees this concludes the market is irrational. It isn’t. It’s doing exactly what it’s designed to do.
Prices already contain expectations. If the market had priced in 50% growth and the company delivered 40%, that’s a miss — regardless of how good 40% sounds in isolation. You are not trading the results. You are trading the gap between results and expectations.
Internalise that one sentence and results season stops being baffling.
The Four Things That Move the Stock
Not just the profit number. In rough order of impact:
Guidance and commentary. What management says about the next few quarters frequently matters more than the quarter just reported. A great quarter with cautious guidance often sells off.
Margins. Revenue growth with shrinking margins gets punished. The market wants to know whether growth is being bought with discounts.
Positioning going in. If a stock has run up 25% in the three weeks before results, expectations are already high and the bar is correspondingly brutal.
The actual numbers. Yes, last. Because they’re only meaningful relative to the three items above.
IV Crush: The Thing That Takes Beginners’ Money
This one deserves its own section because it’s where most results-season losses actually come from — and people often never figure out what happened to them.
Before results, uncertainty is high, so implied volatility on that stock’s options is high, so options are expensive. You pay that inflated price.
Results come out. Uncertainty vanishes. IV collapses — sometimes 40-50% in minutes.
Your option loses a large chunk of value instantly, and it does this regardless of whether you got the direction right. The stock can move your way and your option can still be worth less than you paid.
I want to be blunt: buying naked options the day before results is closer to a lottery ticket than a trade. You need the direction right, the magnitude right, and enough move to overcome IV crush. Three things, all at once. The odds are genuinely poor and they’re poor in a way that isn’t obvious from the outside.
So What Do You Actually Do?
Option one: don’t trade it
I’m putting this first deliberately, because it’s the correct answer for most people and nobody ever says it.
There is no rule requiring you to have a position on every results announcement. Sitting out a specific earnings event is a legitimate, professional decision. “No trade” is a trade.
Option two: trade the reaction, not the announcement
Let results come out. Let the first 15-30 minutes of chaos pass. Then look at what’s actually happening — is the gap holding, is volume confirming, is the stock filling the gap or extending it?
You’ll miss the initial move. You’ll also skip the coin flip. That’s a trade worth making, and it’s what most consistently profitable earnings traders I know actually do.
Option three: position before, but structured
If you must have exposure going in, understand that defined-risk option structures behave very differently from naked long options under IV crush. Spreads reduce the volatility exposure considerably because you’re both buying and selling volatility.
This requires genuinely understanding options pricing first. If the previous sentence was unfamiliar, this route isn’t for you yet.
Option four: play the sector read-through
Sometimes the more reliable opportunity isn’t the company reporting — it’s the peers. A bellwether IT company flagging weak client budgets tells you something about the whole sector, and those second-order moves are often slower and more tradeable than the immediate gap.
Position Sizing — The Unglamorous Part
If you normally risk 2% per trade, results season is not the time to make it 5% because “the move will be bigger.”
Run it the other way. Bigger expected move, smaller position. Same rupee risk, less exposure to a gap that jumps straight past your stop.
Which brings up something critical: stop-losses don’t protect you against gaps. Your stop is at ₹480, the stock opens at ₹430, you’re out at ₹430. Your “defined risk” was fiction. The only genuine risk control in gap situations is position size.
Looking at Past Reactions
Before trading a stock through results, pull up how it reacted to its last six or eight announcements.
Some stocks reliably gap and then fade. Some gap and continue for days. Some have absurdly wide reaction ranges. This pattern is far from perfect, but it gives you a realistic sense of the distribution of outcomes instead of a vague expectation of “a big move.”
Ten minutes of work. Almost nobody does it.
[INSERT: a specific example from a recent results season you’ve discussed with students — the stock, what the numbers were, and what the price did. Real and dated beats generic every time.]
Investors vs Traders
Worth separating, because the advice is nearly opposite.
If you’re a long-term investor, results season is for reading, not trading. The concall transcript, the margin trend, the segment data, whether management’s previous guidance turned out to be accurate. The share price reaction over three days is largely irrelevant to a five-year thesis.
If you’re a trader, none of the above matters much and volatility management is the whole game.
Problems start when people confuse the two — investing based on a price gap, or trading based on liking the business.
What We Cover at Kharghar
Our earnings module spends most of its time on two things: reading a results announcement properly (where the real information sits, versus the headline number), and understanding volatility behaviour around events.
We also spend a session on the discipline of not trading, which students find surprisingly hard and which is probably the most valuable hour in the whole module.
Final Thoughts
Trading during results season rewards people who’ve accepted they can’t predict outcomes and have built a process around that acceptance.
Trade expectations rather than numbers. Respect what IV crush does to option premiums. Size down rather than up. And give yourself full permission to skip an event entirely.
The traders who survive earnings season aren’t the ones who called the results correctly. They’re the ones who were small enough to be wrong without it mattering.
Frequently Asked Questions
Why do stocks fall after good results? Usually because expectations were higher than what was delivered, or because forward guidance disappointed. Price already reflects anticipated performance before the announcement.
Is holding options overnight before results a good idea? It’s high risk. IV crush can erode premium sharply even when the stock moves in your favour, so you need direction, magnitude and timing all correct.
What is IV crush exactly? The sharp drop in implied volatility immediately after results are announced, as uncertainty resolves. It reduces option premiums independently of the stock’s price direction.
Do stop-losses protect me during results? Not reliably. Overnight gaps can open well past your stop level, executing at a much worse price. Position sizing is the real defence.
Should long-term investors act on results-day moves? Generally no. Focus on guidance, margins and management commentary rather than the immediate price reaction, which is driven largely by short-term positioning.
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