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Bearish2 LegsDefined risk

Put Backspread

Sell one higher put and buy two lower puts, often for a credit. A defined risk bet on a steep fall, with large profit as the index drops.

By Team Agora Circle

Written by the Agora Circle editorial team. Educational content, explained for the Indian market. Not investment advice.

Market outlook
Bearish with conviction. You expect a sharp fall, not a slow drift lower.
Setup
Sell 1 put at a higher strike and buy 2 puts at a lower strike, ideally for a net credit.
Max profit
Large as the index falls, driven by the extra long put, bounded only by zero.
Max loss
Limited, and it occurs at the long strike, where both bought puts are still worthless.
Breakeven
Below: the long strike minus the strike gap and net premium. Above: usually a small credit is kept.
Implied volatility
Net long vega. Rising implied volatility helps, which often accompanies falls.
Time decay
Time decay works against the net long options if the index stalls near the long strike.

Strategy Overview

A put backspread sells one put at a higher strike and buys two puts at a lower strike, leaving you net long one extra put. Opened for a net credit, it does no harm if the market rises, since everything expires worthless and you keep the credit. What it is built for is a steep fall, where the two long puts overwhelm the single short put and the profit grows rapidly as the index drops.

Its weak spot is the long strike. There the short higher put has lost value while the two long lower puts are not yet in the money, so the position sits at its defined maximum loss. Because the risk is fully bounded, a put backspread is a clean, defined risk way to position for a crash without the open ended danger of selling puts.

It is a conviction bearish trade, and it pairs naturally with the way markets actually fall, sharply and with rising volatility. A slow, shallow decline that stalls near the long strike is the worst outcome; a fast break lower is what rewards it.

How to Set It Up

Two strikes in a two to one long ratio, all puts, ideally opened for a net credit.

  1. 1Sell 1 put at a higher strike, usually near the money.
  2. 2Buy 2 puts at a lower strike, choosing the distance so the credit from the short put roughly covers the cost of the two long puts.
  3. 3Note the net credit. Your maximum loss is defined and sits at the long strike.

Payoff Diagram and Example

Max Profit

Large as the index falls, driven by the extra long put, bounded only by zero.

Max Loss

Limited, and it occurs at the long strike, where both bought puts are still worthless.

Breakeven

Below: the long strike minus the strike gap and net premium. Above: usually a small credit is kept.

Put Backspread payoff diagram024,80025,000BE 24,620BE 24,980ProfitLossNIFTY at expiry

Suppose NIFTY is at 25,000 and you expect a sharp fall. You sell the 25,000 put for 190 and buy two 24,800 puts for 85 each, costing 170. You open for a net credit of 20 points, about Rs 1,500 on a lot of 75.

If the index rises or stays above 25,000, all three puts expire worthless and you keep the 20 point credit. The worst case is a finish right at 24,800: the short put has lost 200 of value while the two long puts are still worthless, for a maximum loss of 180 points, about Rs 13,500.

The downside breakeven is 24,620. Below it the two long puts drive the position and profit grows quickly as the index falls, twice as fast as the market drops. A slide to 24,200 would leave the position strongly profitable.

Entering and Exiting

Enter both legs together and aim for a net credit, which removes the upside risk and defines the trade cleanly.

Exit by closing the position once a fall has delivered a good profit, or before expiry if the index is stalling near the long strike and drifting toward the maximum loss.

As with any backspread, time hurts in the middle zone, so if the expected break lower has not started by the midpoint of the trade's life, closing to cap the loss is usually the better choice.

Time Decay (Theta)

Time decay works against the position when the index sits near the long strike, because you are net long puts there and their time value drains while you wait for the fall.

Once the index is well below the long strike, decay matters far less, as the long puts are mostly intrinsic value. The decay drag is really a mid zone problem before the move arrives.

Implied Volatility (Vega)

The position is net long vega, so rising implied volatility helps, and falls in the index usually bring exactly that. This alignment of a dropping price and rising IV is what makes the put backspread attractive for crash protection.

The reverse is the risk in the waiting zone. If the market drifts and IV falls, the two long puts lose value before the move comes, so entering when volatility is low is preferable.

Common Adjustments

If the index breaks down strongly, you can sell one long put to lock in profit and leave a bear put spread, or keep riding the large downside.

If the index stalls near the long strike, closing early caps the loss below the theoretical maximum and frees capital for another setup.

Rolling the long puts out to a later expiry buys more time for the fall, treated as a fresh decision on whether the bearish thesis still holds.

Synthetic Equivalent

A put backspread is a short bear put vertical, short the higher put and long one lower put, plus an extra long put at the lower strike. That extra long put is what produces the large downside profit.

Selling back the extra long put reduces the position to a bull put spread, the defined risk skeleton the backspread is built on.

Pros and Cons

Pros

  • Large profit on a steep fall, driven by the extra long put.
  • Often opened for a credit, so a rise does no harm.
  • Defined, bounded maximum loss, unlike selling puts outright.
  • Net long volatility, which aligns with the rising IV that accompanies falls.
  • A clean, defined risk way to position for a crash.

Cons

  • The worst case is a stall at the long strike, a common outcome.
  • Time decay works against the net long puts while waiting for the move.
  • Needs a sharp fall to pay off; a shallow decline can still lose.
  • Falling implied volatility erodes the position before the break lower.

Frequently Asked Questions

How does a put backspread protect against a crash?

It holds two long puts against one short put, so a steep fall produces rapidly growing profit while the risk stays capped at the long strike. Because crashes usually come with rising volatility, the net long vega adds to the payoff, making it a defined risk hedge for sharp declines.

Where is my maximum loss?

At the long strike at expiry. There the short put has lost value while the two long puts are still worthless. In the example that is 180 points, or Rs 13,500, if the index finishes at 24,800.

Why set up a put backspread for a net credit?

So a rise costs nothing. If the index climbs or stays above the short strike, everything expires worthless and you keep the credit. The credit also raises the downside breakeven, so the fall has less distance to cover before profits begin.

What move does it need?

A sharp one. The two long puts only overwhelm the single short put after a strong fall past the long strike. A slow, shallow decline that stalls near that strike is the worst case, so the trade suits genuine conviction in a break lower.

Is the risk really limited?

Yes. Unlike selling puts, the put backspread's loss is capped at the long strike and known in advance. That bounded risk is why it is favoured for positioning ahead of a possible crash.

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This page is for education only. It is not investment advice, and nothing here is a recommendation to buy or sell any instrument. Options involve substantial risk, and option sellers can lose far more than the premium they receive. Please do your own research or consult a SEBI registered investment adviser before trading. Read our full disclaimer.

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