A cash-secured put is an options selling strategy where you sell a put option on a stock while maintaining sufficient cash reserves to purchase 100 shares at the strike price if assigned. When you sell a put, you collect a premium immediately. If the stock price stays above the strike price at expiration, the option expires worthless and you keep the premium as profit. If the stock drops below the strike price, you're obligated to buy the shares at the agreed-upon price—but you've already set aside the cash, hence "cash-secured."
How It Works
The mechanics are straightforward. You identify a stock you'd be comfortable owning and sell a put option at a strike price below the current market price. The buyer of the put pays you a premium for this obligation. Your broker locks up the cash equivalent to purchase 100 shares at the strike price (for example, $10,000 to buy 100 shares at $100 each). This reserved cash cannot be used elsewhere. At expiration, three outcomes are possible: the stock stays above strike (option expires, you keep premium), the stock falls and you're assigned (you buy the shares at your target price), or you close the position early for a profit.
Why It Matters for Investors
For high-net-worth investors, cash-secured puts serve two purposes simultaneously. First, they generate income on cash that would otherwise sit idle in a money market account. Second, they enable disciplined stock acquisition at predetermined prices. Rather than watching a stock and hoping it drops, you're paid to wait for that opportunity. This strategy works particularly well during market volatility when option premiums are elevated. It's also more conservative than buying calls or naked puts because your downside is defined and backed by available cash.
Example
Suppose you want to own Microsoft shares currently trading at $400, but believe $350 is a fair entry point. You sell a $350 put option expiring in 60 days, collecting a $5 premium per share ($500 total). Your broker reserves $35,000 in cash. If Microsoft stays above $350, you pocket the $500. If it drops to $330, you're assigned at $350—your effective cost is $345 after subtracting the premium received. You now own shares at your target price with cash you had available.
Key Takeaways
- Generate income on reserved cash while establishing disciplined entry points for quality stocks
- Your maximum loss is limited to the strike price minus the premium collected, reducing downside risk
- Assignment results in stock ownership at a predetermined discount, creating an automatic dollar-cost averaging mechanism
- Best deployed with diversification across multiple positions and sectors to avoid concentrated risk