Protective Put
Long stock + long put = explicit downside insurance
What is Protective Put?
Protective Put A protective put is a portfolio hedging strategy that combines long stock with a long put option. The put acts as insurance against downside moves — capping the maximum loss at (current price − put strike + put premium). The strategy preserves unlimited upside (long stock has uncapped upside) while explicitly limiting downside risk. Mechanics: - Long 100 shares of the underlying - Buy 1 put option at a chosen strike (typically 5-10% below current price) - Pay premium for the put insurance - If stock falls below strike: exercise put, sell shares at strike. Max loss = current price − strike + premium. - If stock rises: put expires worthless. Lose premium but keep all upside. Worked example: AAPL at $185 with 100 shares - Buy 1 AAPL $175P 60 DTE at $4.20 (cost: $420) - Position breakdown by AAPL price at expiration: - $175 or below: exercise put, sell shares at $175. Max loss = $185 - $175 + $4.20 = $14.20 per share = $1,420 total. - $175 to $185: stock loss (small) + put premium loss = uncapped within this range. - $185 or above: put worthless. Net position = stock gain - $420 premium. The protective put is the cleanest form of equity insurance. Unlike a stop-loss order (which can fail on gaps), the put always pays out at the strike regardless of how fast or far the stock falls. This is critical for: - **Concentrated equity positions** that you can't afford to lose - **Pre-event hedging** when earnings or regulatory decisions create binary risk - **Tax-deferred protection** where selling shares would trigger a capital gain - **Overnight gap insurance** when news flow could cause significant out-of-hours moves Protective put vs stop-loss vs collar: - **Stop-loss**: free to set, but fails on gaps. The stop trigger doesn't guarantee fill price during overnight or fast moves. - **Protective put**: explicit premium cost, but always works at the strike. Gap-resistant. Tax-friendlier (doesn't trigger stock sale unless put is exercised). - **Collar**: protective put + short call. Eliminates the put premium cost by capping upside. Trade-off: limited upside. Protective put strike selection: - **5-10% OTM** (standard): cheap insurance, room for small drawdowns before protection kicks in. Most common default. - **ATM or near-ATM**: expensive insurance, protects more of the position. Used pre-binary-event when uncertainty is high. - **20-30% OTM (deep OTM)**: very cheap, but only protects against catastrophic moves. "Disaster insurance" rather than ordinary protection. When to use protective puts: - Pre-earnings hedging on stocks where a 10%+ gap is plausible - Tax-deferred equity holdings where selling would trigger capital gains - Concentrated equity positions (employer stock, insider holdings) - Overnight/weekend protection during news-heavy periods The protective put is one of the most common institutional hedging strategies. CTAs, pension funds, and family offices routinely use rolling protective puts on long-term equity positions to manage tail risk.
Complete Definition
A protective put is a portfolio hedging strategy that combines long stock with a long put option. The put acts as insurance against downside moves — capping the maximum loss at (current price − put strike + put premium). The strategy preserves unlimited upside (long stock has uncapped upside) while explicitly limiting downside risk. Mechanics: - Long 100 shares of the underlying - Buy 1 put option at a chosen strike (typically 5-10% below current price) - Pay premium for the put insurance - If stock falls below strike: exercise put, sell shares at strike. Max loss = current price − strike + premium. - If stock rises: put expires worthless. Lose premium but keep all upside. Worked example: AAPL at $185 with 100 shares - Buy 1 AAPL $175P 60 DTE at $4.20 (cost: $420) - Position breakdown by AAPL price at expiration: - $175 or below: exercise put, sell shares at $175. Max loss = $185 - $175 + $4.20 = $14.20 per share = $1,420 total. - $175 to $185: stock loss (small) + put premium loss = uncapped within this range. - $185 or above: put worthless. Net position = stock gain - $420 premium. The protective put is the cleanest form of equity insurance. Unlike a stop-loss order (which can fail on gaps), the put always pays out at the strike regardless of how fast or far the stock falls. This is critical for: - **Concentrated equity positions** that you can't afford to lose - **Pre-event hedging** when earnings or regulatory decisions create binary risk - **Tax-deferred protection** where selling shares would trigger a capital gain - **Overnight gap insurance** when news flow could cause significant out-of-hours moves Protective put vs stop-loss vs collar: - **Stop-loss**: free to set, but fails on gaps. The stop trigger doesn't guarantee fill price during overnight or fast moves. - **Protective put**: explicit premium cost, but always works at the strike. Gap-resistant. Tax-friendlier (doesn't trigger stock sale unless put is exercised). - **Collar**: protective put + short call. Eliminates the put premium cost by capping upside. Trade-off: limited upside. Protective put strike selection: - **5-10% OTM** (standard): cheap insurance, room for small drawdowns before protection kicks in. Most common default. - **ATM or near-ATM**: expensive insurance, protects more of the position. Used pre-binary-event when uncertainty is high. - **20-30% OTM (deep OTM)**: very cheap, but only protects against catastrophic moves. "Disaster insurance" rather than ordinary protection. When to use protective puts: - Pre-earnings hedging on stocks where a 10%+ gap is plausible - Tax-deferred equity holdings where selling would trigger capital gains - Concentrated equity positions (employer stock, insider holdings) - Overnight/weekend protection during news-heavy periods The protective put is one of the most common institutional hedging strategies. CTAs, pension funds, and family offices routinely use rolling protective puts on long-term equity positions to manage tail risk.
Example
Hedge fund holds 1,000 shares of TSLA at $250 pre-earnings. Buys 10 TSLA $225P at $5.50 (cost: $5,500). TSLA gaps to $215 post-earnings. Put exercised, shares sold at $225. Loss = $25 per share × 1,000 + $5,500 premium = $30,500. Unhedged loss would have been $35,000.
Formula
Related Terms
Frequently Asked Questions
What is a protective put?
A protective put is long stock combined with a long put option as insurance. The put caps the maximum loss at (current price − put strike + premium). Preserves unlimited upside while explicitly limiting downside risk. The standard institutional hedging strategy.
How much does a protective put cost?
Typically 1-3% of position value per month for puts 5-10% OTM in moderate-IV environments. Higher in elevated IV (4-5% per month). The cost scales with IV, distance from strike, and time to expiration. Annualized cost of running rolling protective puts can be 8-15% in calm markets, higher in stress regimes.
Should I use a protective put or a stop-loss?
Protective puts always work at the strike — gap-resistant and tax-friendlier. Stop-losses are free to set but can fail on gaps (trigger doesn't guarantee fill price). For binary events (earnings, regulatory decisions) or concentrated positions, protective puts are the safer choice despite the explicit cost.
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