Long Put

The position is a single leg, entered with one order.

Enter with a buy to open order, ideally a limit order near the current quote. Put premiums can spike quickly on red days, so chasing a falling market with market orders is an expensive habit.

Exits mirror the long call: most traders sell the put back once the move happens rather than holding to settlement, because selling captures any time value that remains. Index options are cash settled, so there is no delivery to manage either way.

Plan the exit in advance: a downside target on the index, a premium stop loss, and a time stop. A put that has not started working by the middle of its life is fighting an increasingly steep decay curve.

Theta works against a long put exactly as it does against a long call. The time value you paid for melts every session, slowly at first and rapidly in the last two to three weeks.

This matters doubly for puts bought as portfolio insurance. Rolling protection month after month has a real, recurring cost, so hedgers often finance it by selling something against it, which leads naturally to structures like the collar.

Long puts are long vega, and this is usually a tailwind: implied volatility tends to rise when markets fall, so a correct bearish call often gets paid twice, once from direction and once from the IV expansion.

The trap is buying puts after panic has already set in. When IV is stretched, you pay a fat premium, and even a further decline can disappoint once volatility cools off. The best put buying conditions are calm markets where downside protection is cheap.

If the fall plays out quickly, you can sell a lower strike put against your position, converting the trade into a bear put spread. That locks in value and removes the pressure of watching decay eat an unrealised gain.

If your thesis needs more time, roll the put to a later expiry. Sell the current contract, buy the next month, and treat the additional premium as a brand new trade decision.

For hedgers, the standard adjustment is rolling the strike down after a fall: sell the now valuable put, buy a cheaper lower strike, and bank the difference while keeping protection in place.

By put-call parity, a long put has the same payoff as shorting the underlying together with a long call at the same strike. Both give the capped risk on a rise and large profit on a fall.

That equivalence is why a long put is the natural bearish building block, and why covered and spread structures are built by selling other options against it.