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Why a straddle before earnings loses even when the stock moves
A long straddle buys a call and a put at the same strike, so you win on a big move in either direction. The catch is that the option prices before earnings already assume a big move. The stock has to beat that assumption, not just make it.
What you are actually buying
You buy a Call option and a Put option at the same strike and the same Expiration date. You pay both premiums. You do not care which way the stock goes, only how far.
That sounds like the perfect trade for earnings. A company reports, the stock jumps or drops, you win either way.
The problem is that you are not the only person who knows earnings are tomorrow. Everyone does, so both options are already expensive.
The move is priced in before you get there
Add the call price and the put price together. That total is roughly the move the market expects by expiry — sometimes called the expected move.
If the straddle costs $9.00 on a $100 stock, the market is already charging you for a move of about $9 either way. The stock has to travel further than that before you make a dollar. Finishing exactly $9 away is break-even. A $6 jump, which would be a headline-grabbing move on most stocks, is a loss.
Two things work against you at the same time:
- Implied volatility falls the moment the news is out. Before the report, uncertainty is high and every option carries extra premium for it. Once the numbers are public that uncertainty is gone, and the premium goes with it. See IV crush explained.
- The clock keeps running. Theta takes a bite every day you hold, and it bites hardest in the last week.
You can draw the whole payoff before you risk anything with the options strategy payoff calculator — put the call and the put in as two legs and look at where the lines cross zero.
A worked example where the stock moves and we still lose (hypothetical)
Harbor Microsystems, a made-up stock, trades at $100. It reports tomorrow morning. You buy the straddle with seven days left.
| Leg | Strike | Premium | Cost |
|---|---|---|---|
| Buy 1 call | $100 | $5.00 | −$500 |
| Buy 1 put | $100 | $4.00 | −$400 |
| Total debit | $9.00 | −$900 |
- Max loss: $900, the whole debit, if the stock finishes at exactly $100.
- Break-evens: $91 and $109. The strike minus the total debit, and the strike plus the total debit.
Morning comes. Harbor beats its numbers and the stock gaps up to $106 and holds there into expiry.
A 6% jump on earnings day. You were right that the news would move it, and you did not even have to guess the direction.
| Value at expiry | |
|---|---|
| $100 call, stock at $106 | $6.00 → $600 |
| $100 put, stock at $106 | $0 |
| Total value | $600 |
| What you paid | −$900 |
| Result | −$300 |
You lost $300 on a trade where the stock jumped 6% in your favour.
Check it a second way: the upper break-even was $109, the stock stopped at $106, and $109 − $106 = $3, which is $300 on one contract. Same answer.
Selling into the opening bell instead of holding does not rescue it either. The next morning the stock is $106 with six days left and volatility has collapsed, so the two options together are worth about $6.50 — call it $650 (a hypothetical mark, not a quote). You paid $900. That is still −$250.
Every outcome at expiry
Same trade: the $100 straddle bought for $9.00 (hypothetical).
| Harbor at expiry | Call worth | Put worth | Total value | Result |
|---|---|---|---|---|
| $80 | $0 | $2,000 | $2,000 | +$1,100 |
| $91 | $0 | $900 | $900 | $0 (break-even) |
| $94 | $0 | $600 | $600 | −$300 |
| $100 | $0 | $0 | $0 | −$900 (max loss) |
| $106 | $600 | $0 | $600 | −$300 |
| $109 | $900 | $0 | $900 | $0 (break-even) |
| $120 | $2,000 | $0 | $2,000 | +$1,100 |
Notice how wide the losing middle is. Every price from just above $91 to just below $109 loses money. On a $100 stock that is an 18-point band, and most earnings reactions land inside it.
So when does a straddle work?
When the move is bigger than the price of the move. That happens, and it is not a rare event — it is just not the common one.
| What you need | Why it is hard before earnings |
|---|---|
| A move bigger than the total premium | The premium is set because a move is expected |
| Volatility to stay up, or rise | It almost always falls once the news is out |
| Time, if the move comes later | You bought the short-dated expiry to keep the cost down |
| A stock that surprises | Guidance usually matters more than the reported numbers |
The cheapest way to get the odds is to buy the straddle when nobody expects anything — a quiet stock, a quiet week, no event on the calendar. Then the premium is small, the implied move is small, and an ordinary move can beat it. That is also when a straddle feels pointless, which is exactly why it is cheap.
What sellers do with this instead
The other side of this trade is the whole reason sellers like events. They are selling the inflated premium and letting volatility fall out of it. That is the thinking behind a short strangle and the credit strategies in option strategies beyond the wheel — and it carries the mirror-image risk, which is the move that does beat the premium.
If you came here from the wheel strategy, notice the direction of travel. The wheel pays you to wait. A straddle pays someone else while you wait.
What a long straddle costs you to hold
The debit is the whole risk, which is the one genuinely simple thing about it. You cannot lose more than you paid, there is no margin requirement, and no assignment can surprise you.
Because you are buying, not writing, long calls and puts are generally permitted in a Canadian TFSA or RRSP at a basic options level, while writing uncovered options generally is not — check what your own broker has approved your account for. Treat the debit as money you have already spent, and size it the way you would size a loss, not a position.
What to do before your next event trade
- Add the call and the put together. Write down both break-evens.
- Look at how far the stock actually moved on its last four reports. Was any of them bigger than today's premium?
- Decide your exit before the news, including the losing one.
- If the break-evens need a move the stock has never made, the trade is not cheap — it is just wrong.
Questions
Why did my straddle lose money when the stock moved?
Because the move was smaller than the premium you paid. A $100 straddle bought for $9.00 needs the stock past $109 or below $91. A jump to $106 leaves the call worth $600 against $900 paid, so it loses $300.
What is IV crush on a straddle?
Before earnings, both options carry extra premium for the unknown result. When the result is published that unknown disappears and implied volatility drops, so both options lose value at once — even the one pointing the right way.
Should I sell the straddle right after the announcement?
Selling early at least stops the time decay, but it does not avoid the volatility drop, which happens within minutes of the news. In the example above, selling the morning after still left a $250 loss.
Is a strangle cheaper than a straddle before earnings?
Cheaper to buy, yes, because both strikes are out of the money. It also needs a bigger move to break even, so you are trading cost for distance, not removing the problem.
What is the max loss on a long straddle?
The total debit you paid, and it happens if the stock finishes exactly at the strike. In the example that is $900.
Is there a safer way to trade an earnings move?
Safer is not the right word for any of them. A smaller position is the only lever that reliably changes the size of the loss. Everything else changes the shape of the bet.
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