Long Put
A long put is a bearish options strategy created by buying a put option. It gives the buyer the right, but not the obligation, to sell the underlying at the strike price before expiration, with maximum loss limited to the premium paid and maximum profit increasing as the underlying falls toward zero.
A long put consists of purchasing a put option on an underlying stock, ETF, or index. The put gives the holder the right to sell the underlying at the strike price before expiration.
Traders use long puts when they expect a meaningful downside move and want bearish exposure without shorting stock directly. The most that can be lost is the premium paid for the option.
Because it is a purchased option, the long put needs the underlying to fall enough, and soon enough, to overcome both the strike price relationship and the premium paid.
Long puts are popular when a trader wants downside participation with defined downside risk to capital, especially around catalysts, breakdown setups, or as a lower-capital alternative to short stock.
The maximum loss on a long put is limited to the premium paid for the option. That loss occurs if the option expires worthless, which happens when the underlying finishes at or above the strike price at expiration.
The breakeven price at expiration is the strike price minus the premium paid. Below that level, the put’s intrinsic value exceeds the initial cost and the position becomes profitable at expiration.
Example: Stock at 100
Suppose you buy the 100 put for 5.00. Your total debit is 5.00, or $500 per contract before fees.
Maximum loss: 5.00, or $500 per 1-lot before fees.
Breakeven: 100.00 – 5.00 = 95.00
Maximum profit: 95.00, or $9,500 per 1-lot before fees, if the stock falls to 0 by expiration.
If the stock expires at 97, the option has 3.00 of intrinsic value, but that is still below the 5.00 paid, so the trade loses 2.00. If the stock expires at 90, the option has 10.00 of intrinsic value, producing a 5.00 profit after subtracting the premium.
The long put is a directional bet on downside acceleration. You are paying premium for the right to benefit from a sharp drop while keeping the maximum possible loss fixed at entry.
Delta: The option usually gains value as the underlying falls.
Theta: Time decay works against the long put because purchased options lose extrinsic value as expiration approaches.
Vega: Higher implied volatility generally helps by increasing the option’s premium, while lower implied volatility can hurt.
Gamma: Positive gamma means delta can become more negative as the stock falls, making downside participation more responsive on strong moves.
Before expiration, a long put’s value depends on price movement, time remaining, and implied volatility. A trader does not need to hold to expiration to profit; the put can often be sold earlier if the option’s premium increases.
In practice, long puts tend to perform best when the underlying drops quickly and volatility is stable to higher after entry.
When it fits
- You have a bearish directional view.
- You want downside exposure with strictly defined downside risk to capital.
- You expect a move large enough to overcome premium and time decay.
How the trade wins
- The underlying falls quickly.
- Implied volatility increases or remains firm.
- The move occurs early enough to preserve extrinsic value.
How the trade loses
- The stock stalls above breakeven.
- Too much time passes without a decisive downside move.
- Implied volatility contracts after the option is purchased.