Protective Put
Own shares and buy a put. Like insurance: it sets a floor under your position.
Payoff at expiration
When traders use it
You want to keep a stock but limit downside (e.g., through an event).
Formulas (per share; ×100 per contract)
| Max profit | Unlimited |
| Max loss | (S − K) + P |
| Breakeven | S + P |
Key risks
The premium is a recurring cost that drags returns; protection expires.
How it works
Own 100 shares and buy one put. The put gives you the right to sell at the strike, so your worst case is fixed: (purchase price − strike) + premium. Upside is unlimited, minus the premium cost.
Worked example HYPOTHETICAL
Hypothetical example only — not real prices or a recommendation. Own 100 shares at $100. Buy 1 put, 60 days, $95 strike, for $2.00 ($200).
| Stock price at expiration | P/L (1 contract, excl. fees) |
|---|---|
| $70 | −$700 |
| $90 | −$700 |
| $95 | −$700 |
| $100 | −$200 |
| $102 | $0 |
| $120 | +$1,800 |
Market outlook: when to use it
Use when: Bullish long term but worried about a near-term drop; protecting gains through an event.
Avoid when: When protection is very expensive (high IV) or as a permanent hedge — repeated premiums drag returns.
The Greeks, in plain words
| Delta | Positive, less than 100 shares. |
| Theta | Negative: the put decays. |
| Vega | Positive: put gains when volatility spikes. |
| Gamma | Positive. |
Choosing strikes and expiration
Closer strikes = more protection, higher cost. 5–10% OTM and 2–6 months is common. Longer puts cost less per day.
Managing the trade
Sell the put after a drop to capture value, or roll down/out. Long puts are not assigned. Consider a collar to reduce cost.
Common mistakes
- Buying short-dated puts repeatedly (high decay).
- Buying after the drop when IV is high.
FAQ
Max loss?
($100 − $95) + $2 = $7/share ($700).
Breakeven?
$102.
Explained simply
When would someone use this?
When you own a stock and want to limit how much you can lose over a period of time, while keeping the upside.
The setup, in plain words
Own 100 shares and buy one put, usually below the current price. The put sets a floor; the premium is the cost of the insurance.
Max profit, max loss and breakeven
- Max profit
- Unlimited in theory, minus the premium paid.
- Max loss
- (Purchase price − put strike + premium) × 100.
- Breakeven
- Stock purchase price + premium paid.
A simple numeric example (hypothetical)
You own 100 shares at $100 and buy a $95 put for $2.00 ($200). If the stock falls to $70, you can sell at $95, so the loss is $500 on the shares plus $200 for the put = $700. If the stock rises to $120, you gain $2,000 minus $200 = $1,800.
The main risks, in plain words
- The premium is lost if the stock does not fall, like any insurance.
- Protection ends at expiration.
- Buying protection over and over can add up to a big cost.
Beginner FAQ
Is the loss really capped?
Yes, until the put expires, because you can always sell at the strike.
Read next
Calls vs Puts for Beginners · All Learn articles
Related strategies
Collar · Long Put · Covered Call
Watch: further explanation
The Hidden Cost of Long Put Protection — tastylive
Options Buying Strategies: Protective Puts Explained — Fidelity Investments
Calculators for this strategy
Options Profit Calculator · Probability of Profit Calculator