A protective put is insurance for stock you own. You pay a premium for the right to sell your shares at a set floor, so if the stock crashes, your losses stop there. It is the opposite of an income trade: you are buying protection, not selling it.
Think of it exactly like insurance on your car. You pay a small premium, and if disaster strikes, your loss is capped at the deductible. If nothing happens, the premium is just the cost of sleeping well.
A floor under your shares
When you own stock and buy a put against it, that put gives you the right to sell at its strike no matter how low the stock goes. That strike becomes a hard floor under your position. Below it, further drops in the stock are matched by gains in the put, so your loss simply stops. Above it, you keep every bit of the upside, minus the premium you paid.
The cost of the peace of mind
Insurance is never free. The premium you pay for the put is a real, guaranteed cost, and if the stock does nothing scary, that money is simply gone, the price of protection you did not end up needing. A put closer to the current price protects more but costs more; a cheaper, further put protects only against a serious crash. You choose your deductible.
When it is worth it, and when it is not
A protective put earns its keep when you have a real reason to fear a drop, a big earnings report, a nervous market, or a large position you cannot afford to see halved, but you still want to hold the shares. It is usually not worth buying puts on everything all the time, because the constant premium quietly bleeds your returns. Insure against real risks, not vague worry.
Notice this is the mirror of the income trades in this library. Sellers collect the insurance premium; put buyers pay it. Most of the time, being the calm seller of protection beats being the anxious buyer of it, but for a specific, scary risk, insurance is exactly the right call.
- A protective put is insurance: pay a premium, and the strike becomes a floor under your losses.
- Your upside stays fully open above the strike, minus the premium you paid.
- Use it for specific, real risks, not as constant coverage, since the premium steadily costs you.
This article is educational and is not investment advice. Options involve risk, including the possible loss of principal. Examples and premiums shown are illustrative and change with the market. Practice with paper trading before committing real money.