Protective Put Strategy
A protective put acts as insurance for your stock position, establishing a floor on potential losses while retaining upside participation.
A protective put involves buying a put option on a stock you already own. This creates a floor on your downside: regardless of how low the stock falls, you can sell your shares at the strike price of the put. The cost of this insurance is the premium paid for the put. This strategy is functionally equivalent to a married put when the stock and put are purchased simultaneously.
Imagine you own 100 shares of SPY purchased at $440 per share. You buy a $430 put expiring in 60 days for $4.00 per share ($400 total). If SPY drops to $410, your stock loses $30 per share, but the put allows you to sell at $430, limiting the loss to $10 per share plus the $4 premium, or $14 total downside. If SPY rises to $470, you participate fully in the gain minus the $4 premium cost. The put expires worthless, but you've had peace of mind throughout the period.
Choosing the Right Put
The strike price determines the level of protection. An at-the-money put (strike near current price) offers maximum protection but costs the most. An out-of-the-money put (strike 5-10% below current price) is cheaper but provides a larger deductible. The time horizon matters too: longer-dated puts cost more but offer extended protection. A common approach is to buy 60-90 day puts and roll them forward as they expire. For a portfolio of individual stocks, you might also buy index puts (e.g., SPY puts) to hedge broad market risk rather than hedging each position individually.
Protective Put vs. Stop Loss
A stop-loss order triggers a market sell order at a specified price, but it doesn't guarantee execution at that price, especially during fast moves or gaps. A protective put guarantees a minimum sale price regardless of market conditions. During the 2020 COVID crash, stop-losses on many stocks triggered far below the intended level, while protective puts would have maintained their floor values. The trade-off is the upfront premium cost versus the zero cost of a stop-loss order.
FAQs
Can I sell the put before expiration?
Yes. Protective puts are actively traded. If the stock rallies and you no longer want protection, you can sell the put to recover some of the premium. If the stock drops, the put will increase in value and can be sold for a profit.
What is the maximum loss on a protective put?
Your maximum loss is the cost of the shares minus the put strike price, plus the premium paid. If SPY is at $440, you buy the $430 put for $4, and SPY goes to $0, your maximum loss is $440 - $430 + $4 = $14 per share.
How is a protective put taxed?
The put premium is added to the cost basis of the stock. If the put expires worthless, the premium is treated as a capital loss. If the put is sold or exercised, the premium affects the gain or loss calculation on the stock position.