Understanding the Selling Puts Strategy
Selling puts (also called writing puts or short puts) is an options strategy where you sell a put option to collect the premium, obligating you to buy the underlying stock at the strike price if the option is exercised. This strategy generates immediate income and is most profitable when the stock stays above the strike price, causing the put option to expire worthless and allowing you to keep the entire premium.
Professional traders and institutions frequently use put selling as an income-generation strategy. Warren Buffett has famously used this approach, collecting billions in premium income by selling puts on stocks he would be happy to own at lower prices. The strategy essentially gets you paid to wait for a stock to drop to your desired purchase price, or to profit if it never does.
Options have a statistical edge for sellers because they lose value every day through time decay (theta). Roughly 60-80% of options expire worthless or are closed at a profit for sellers. This time decay works in the put seller's favor every single day the position is open.
How to Calculate Put Selling Returns
- 1Total premium income = $3.50 x 100 shares = $350
- 2Capital required (cash-secured) = $140 x 100 = $14,000
- 3Return on capital = $350 / $14,000 = 2.50%
- 4Annualized return = 2.50% x (365/30) = 30.42%
- 5Breakeven price = $140 - $3.50 = $136.50
- 6Maximum loss = ($140 - $0 - $3.50) x 100 = $13,650 (if stock goes to $0)
- 7Cushion from current price = ($150 - $136.50) / $150 = 9.0%
When to Use the Selling Puts Strategy
- You are bullish or neutral on the underlying stock and believe it will stay above the strike price
- You would be happy to own the stock at the strike price if assigned (buy at a discount)
- You want to generate income from cash sitting idle in your brokerage account
- Implied volatility is elevated, making premiums richer than normal
- You want to enter a stock position at a price lower than the current market price
- You prefer a defined-risk strategy with known maximum loss
Put Selling Strategy Variations
| Strategy | Capital Needed | Risk Level | Typical Return | Best For |
|---|---|---|---|---|
| Cash-Secured Put | Full strike x 100 | Moderate | 2-4% per trade | Conservative income seekers |
| Margin Put | 20-25% of notional | High | 8-15% per trade | Experienced traders |
| Put Credit Spread | Width of spread x 100 | Defined | 5-15% per trade | Limited capital, defined risk |
| Naked Put (Portfolio Margin) | ~10-15% notional | Very High | 10-20% per trade | Institutional/professional |
Managing Put Selling Risk
Risk Management Framework for Put Sellers
If the stock falls below your strike price at expiration, you will be assigned and must buy 100 shares per contract at the strike price. Always have sufficient cash or margin capacity for potential assignment. Early assignment can also occur, especially around ex-dividend dates.