Bear put spread

A bear put spread is a cheaper way to bet on a fall. You buy one put at a higher strike and sell one put at a lower strike, on the same underlying and expiry. The premium from the sold put pays for part of the bought put, so the trade costs less than a single put. Because you pay more than you receive, it is a debit spread.

In exchange, gains stop at the lower strike: below it, the sold put loses as much as the bought put gains. If puts are new to you, start with the long put strategy.

How the payoff works

• Above the higher strike at expiry: both puts are worthless and you lose the net debit, the most you can lose.
• Between the strikes: only the bought put has value. Profit rises one point for each point the index falls.
• Below the lower strike: both puts are in the money and cancel each other beyond that point. Profit is at its maximum and stays there.

Net debit = premium of bought put − premium of sold put

Max profit = (higher strike − lower strike) − net debit · Breakeven = higher strike − net debit

A worked NIFTY example

NIFTY is at 25,000. You expect a fall toward 24,800 by expiry, but not a crash. You:

• Buy the 25,000 put for ₹170
• Sell the 24,800 put for ₹85

Net debit = 170 − 85 = ₹85. Strike width = 200. Maximum profit = 200 − 85 = ₹115. Breakeven = 25,000 − 85 = 24,915.

Buying the 25,000 put alone for ₹170 would break even at 24,830 and risk ₹170. The spread halves the risk and breaks even 85 points sooner. In a crash to 24,200 the single put would make ₹630 against the spread's ₹115: that is the trade-off. With a lot of 75 units (check the current lot size on NSE or with your broker), the spread risks ₹6,375 to make up to ₹8,625.

Live example: building the spread from today's prices

The two legs come from the put side of the option chain, in the same expiry:

Choose a put to buy near the current price and a lower one to sell. The difference between their prices is your net debit; the gap between the strikes minus that debit is the most you can make. If the debit is more than half the width, the reward is smaller than the risk.

The open interest picture can help place the lower strike. Large put open interest often marks a level where sellers expect support:

Some traders sell their lower put near the strike with the most put open interest, reasoning that a fall may slow there. That is a rough guide, not a rule, and the level can shift during the day.

Why spreads suit bearish trades

Falls tend to come with rising fear, so puts are often already expensive when a trader turns bearish. When the market calms, implied volatility drops and a single bought put loses value fast, a pattern explained in the IV crush guide. In a spread you are both long and short volatility, so much of that effect cancels.

There is a second reason. Lower-strike puts usually carry a higher implied volatility than at-the-money puts, a tilt called the volatility skew. In a bear put spread you sell that relatively expensive lower put, which recovers part of the extra cost of buying protection in a nervous market.

Choosing strikes and expiry

• Buy at the money, sell out of the money (as above): the usual choice, with reward and risk of similar size.
• Both out of the money: cheaper, a higher reward-to-risk ratio, but a fall must be larger to pay.
• Wider strikes: more profit potential, closer to a plain long put; narrower ones cost less and cap sooner.
• Expiry: the spread's value builds mostly near expiry. A weekly contract gives a quick answer; a monthly gives the fall more time.

The strategy builder shows the maximum profit, loss and breakeven for any pair of strikes, and how the spread is valued before expiry.

Managing the trade

• Close as one unit: sell the bought put and buy back the sold one together, to avoid being left with a single leg.
• Take profit early if most of the maximum is reached well before expiry. Sharp falls often bounce.
• Exit on a broken idea: if NIFTY rises through a level that cancels the bearish view, the spread usually still has some value to recover.
• Stock options: these are physically settled in India, so close stock spreads before expiry to avoid delivery obligations; check your broker's expiry rules.

Bear put spread vs buying futures or a single put

A trader with a bearish view on NIFTY usually weighs three choices. Selling futures profits from the first point of a fall, has no premium to decay, but loses without limit if the market rallies and needs a large margin. Buying a put limits the loss to the premium and keeps the full reward of a crash, but costs the most time value and suffers most when fear fades. A bear put spread sits between them: a small, known cost and a known maximum gain, at the price of giving up the crash payoff.

The spread is often the better fit for a view like "NIFTY drifts down 1% to 2% over the next week or two", and the poorer fit for "NIFTY could fall 5% on bad news". Matching the strategy to the size of the move you expect matters more than the strategy itself.

Bear put spread vs bear call spread

Both profit from a fall. The bear put spread pays a debit and needs the price to fall. The bear call spread collects a credit and profits if the price falls or stays put. With matching strikes their payoffs are almost identical; the difference is in prices, margin and where the strikes sit compared with the current price. The bullish mirror image is the bull call spread.

Common mistakes

• Expecting the spread to jump on the first fall. Before expiry the sold put holds time value, so the spread moves slowly.
• Paying close to the full width. That leaves almost no reward for being right.
• Legging in during a fast market. Prices can run away between the two orders.
• Ignoring charges. Four orders to open and close add up on a small maximum profit.
• Turning bearish after a big fall. The bounce that often follows can turn a winning idea into a loss.