Short Straddle

A short straddle is mainly used when you expect an underlying asset to stay near one price. You sell one call and one put with the same strike price and expiry.

• Sell call and put options together
• Both options use identical strike prices
• Both options have the same expiry
• Maximum profit equals premiums received together
• Two breakeven prices define profit range
• Sharp moves can create large losses

A short straddle can make money when the underlying price stays close to your selected strike price.

You receive premiums by selling both a call and a put option. If the underlying stays near the strike until expiry, both options can lose value.

Your maximum profit is simple:

Maximum profit = Call premium + Put premium

Suppose you receive ₹50 from the call and ₹50 from the put.

Your total premium becomes:

₹50 + ₹50 = ₹100 per unit

This ₹100 is your maximum possible profit before brokerage, taxes and other charges.

However, you do not need the price to remain exactly at the strike to make a profit. The position can still remain profitable between its two breakeven prices at expiry.

A short straddle has two breakeven points.

You calculate them using the total premium received.

Upper breakeven = Strike price + Total premium

Lower breakeven = Strike price − Total premium

Suppose the strike price is ₹1,000 and your combined premium is ₹100 per unit.

Then:

Upper breakeven = ₹1,000 + ₹100 = ₹1,100

Lower breakeven = ₹1,000 − ₹100 = ₹900

At expiry, the position can make a profit between ₹900 and ₹1,100 before charges.

Outside this range, losses begin.

Assume the underlying is trading around ₹1,000.

You sell:

• A ₹1,000 call for ₹50 per unit
• A ₹1,000 put for ₹50 per unit

You receive ₹100 total premium per unit.

Now see how the outcome changes with the expiry price.

If the price stays at ₹1,000

Both options have no intrinsic value at expiry.

You keep the ₹100 premium per unit before charges.

This is your maximum profit.

If the price rises to ₹1,050

The call has ₹50 of intrinsic value.

The put expires without intrinsic value.

Your ₹100 premium offsets this ₹50 loss.

You are still left with a ₹50 profit per unit before charges.

If the price rises to ₹1,100

The call has ₹100 of intrinsic value.

Your ₹100 premium completely offsets it.

Your expiry profit becomes zero before charges.

₹1,100 is therefore the upper breakeven.

If the price falls to ₹900

The put has ₹100 of intrinsic value.

Your ₹100 premium offsets this amount.

Your expiry profit becomes zero before charges.

₹900 is the lower breakeven.

What if the price moves much further?

Suppose the underlying rises to ₹1,250.

The call has ₹250 of intrinsic value.

After adjusting for the ₹100 premium:

Loss = ₹250 − ₹100 = ₹150 per unit

This example shows why looking only at the premium can be risky. You should also understand what happens if the market makes a large move.

A short straddle is generally a neutral options strategy.

You are not mainly expecting the underlying to rise or fall. You are expecting it to stay within a limited range.

That does not mean the risk is equal on both sides.

On the upside, the short call can create theoretically unlimited losses because the underlying price has no fixed upper limit.

On the downside, the short put can also create a large loss. However, this loss is finite because the underlying price cannot normally fall below zero.

A short straddle generally suits a view where you expect limited price movement.

Before using the strategy, consider these factors.

Do you expect the price to stay range-bound?

This is the most important question.

A short straddle works most favourably when the underlying remains close to the strike.

Large price moves reduce your profit and can create losses.

Is the premium enough for the risk?

Your maximum profit is limited to the total premium received.

Your potential loss can be much larger.

You therefore need to compare the premium received with the loss you may face if the market moves sharply.

Is a major event coming?

Company results, economic data, policy decisions and other major announcements can increase volatility.

The underlying may move sharply after such events.

This can push the price beyond either breakeven.

Can you handle the margin requirement?

Selling options requires margin.

Margin requirements can also increase when volatility rises, or the position moves against you.

You should therefore consider how much capital the position may require, not just how much premium you receive.

Time decay can work in favour of an option seller.

As expiry gets closer, options generally lose time value if other factors remain unchanged.

Since you have sold both options, falling time value can reduce the price required to buy them back.

However, time decay does not protect you from a sharp market move.

If the underlying price moves strongly or implied volatility rises, losses can outweigh the benefit from time decay.

A short straddle has some features that traders consider when they expect limited market movement.

1. You collect two option premiums

You receive one premium from the call and another from the put.

Together, these premiums form your maximum possible profit.

2. You do not need to pick direction

You are mainly taking a view on how much the underlying may move rather than whether it will rise or fall.

This makes the strategy neutral in its market outlook.

3. Time decay can support the position

The value of both options may reduce as expiry approaches.

This can benefit the seller if the price stays near the strike.

4. Maximum profit is known beforehand

Your maximum profit is fixed at the total premium received.

You can calculate this amount before entering the position.

The biggest issue with a short straddle is the difference between limited profit and potentially large losses.

Losses can exceed your premium

The premium is only your maximum profit.

A strong market move can create a loss many times larger than the premium you received.

Upside losses can keep increasing

The short call loses money as the underlying rises above the upper breakeven.

Since there is no fixed maximum price for the underlying, the theoretical upside loss is unlimited.

A sharp fall can also hurt

The short put loses money when the underlying drops below the lower breakeven.

The maximum downside loss is finite, but it can still be substantial.

Higher volatility can increase losses

A rise in implied volatility can increase option prices.

This may make it more expensive to close the short call and put.

Margin needs can rise

Your broker may require additional margin if risk increases.

A position that looked manageable when opened may therefore require more funds later.

A short straddle and a short strangle are both generally used when you expect the market to remain within a range.

However, they use different strike prices.

In a short straddle, both options use the same strike.

In a short strangle, you normally sell an out-of-the-money call and an out-of-the-money put at different strikes.

A short strangle may give the underlying more room to move before reaching the short strikes. However, you usually receive a lower premium when other factors are similar.

Do not look only at the premium you may collect.

First calculate how much you may lose if the market moves beyond your breakevens.

Suppose a trader sells a ₹1,000 straddle and receives ₹100 total premium per unit.

The breakevens are ₹900 and ₹1,100.

Now assume the underlying jumps to ₹1,300 at expiry.

The short call has ₹300 of intrinsic value.

After adjusting for the ₹100 premium:

Net loss = ₹300 − ₹100 = ₹200 per unit

The actual contract-level loss would also depend on the prescribed lot size.

This is why position size, margin availability, volatility and maximum acceptable loss matter before using a short straddle.

A short straddle can earn its maximum premium when the underlying price stays close to the strike price. You receive premium from both a call and a put, but your profit has a fixed limit. A sharp move can quickly turn the position into a large loss, especially on the upside. Before using this strategy, understand both breakeven prices, margin needs, volatility and possible loss. Short straddles are therefore more suitable for traders who understand options and actively manage risk.