Bear Put Spread

The thesis

The Bear Put Spread is the structural twin of the bull call spread, flipped for a downside view. You buy a put near the current level and sell a further-OTM put below, which subsidises your long and caps the maximum win at the lower strike.

Shorting the index through futures is capital-intensive and carries unlimited upside risk; naked long puts bleed theta and require a fast move. The bear put spread sits between the two — moderate leverage, capped risk, capped reward, a far gentler theta burn than a single long put.

Use it when you expect a controlled decline: a weakening trend, a post-rally exhaustion, or a bearish macro tilt. Don't use it if you're expecting a crash — in that case, a naked put or put ratio captures more of the tail.

Construction

Two puts, same expiry, different strikes. The long strike is ATM or slightly OTM; the short strike is the level you think spot might reach by expiry.

When it works

• You expect a measured decline, not a crash.
• The technical structure has broken — lower highs, lower lows — and momentum is fading.
• IV is somewhat elevated, so your short leg recoups meaningful premium.
• Spot slides to or below the short strike with time still on the clock.

When it fails

• Rally or sideways drift. Spot stays above the long strike; both legs decay to zero and you lose the full debit.
• Slow slide. Spot falls but only reaches breakeven by expiry — theta chewed the intrinsic value before it could realise.
• Capped win. A panic crash drives spot far below the short strike, but your profit is still capped at the width — no tail-risk participation.
• IV crush on bounce. A sharp relief rally combined with falling IV destroys the long leg faster than the short leg gains.

Greeks at entry

Like its bullish twin, the bear put spread has a clean, teachable Greeks profile — a good first real-money structure for new options traders who have done their paper work.

Example trade (educational only)

Nifty spot at 22,500, monthly expiry 20 days out. You buy the 22,500 PE at ₹130 and sell the 22,300 PE at ₹50. Net debit = ₹80 × 75 = ₹6,000 per lot.

Max profit = width (200) − debit (80) = 120 × 75 = ₹9,000. Break-even at expiry = 22,500 − 80 = 22,420.

• Spot closes at 22,600 → both puts worthless → loss = −₹6,000.
• Spot closes at 22,500 → both worthless → −₹6,000.
• Spot closes at 22,420 → long put worth ₹80, short worthless → break-even (₹0).
• Spot closes at 22,350 → long put worth ₹150, short worth ₹0 → ₹70 × 75 = +₹5,250.
• Spot closes at 22,300 or below → long − short = ₹200 intrinsic − ₹80 debit → +₹9,000 (max).
• Spot closes at 22,000 → still +₹9,000 (capped).

Adjustments & exits

• Roll down the short. If spot falls quickly and threatens the short strike, roll that leg lower to unlock more width.
• Book at 60–70%. Take profit early instead of pinning at expiry; the last 30% of max-profit is mostly gamma noise.
• Cut at 50% of debit. If spot rallies against you, exit before theta hollows the long leg.
• Convert to butterfly. With room to the downside, sell another put further OTM and buy a lower put to create a broken-wing butterfly for a cheaper pay-for-price structure.

Who should study this

Swing traders who want bearish exposure without the capital drag of futures, and anyone graduating from naked long puts who has learned how expensive theta can be. The bear put spread teaches defined risk, trade discipline, and the value of giving up unlimited upside for a cleaner Greeks profile.

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