Earn While You Wait: A Guide to Cash-Secured Puts June 30, 2025

Options strategies can seem complex at first glance, but some are surprisingly straightforward and can complement a long-term investment approach. One such strategy is the cash-secured put—a method often used by investors who are open to owning a particular stock and want to generate income while they wait. Whether you’re new to options or seeking more efficient ways to deploy capital, understanding how cash-secured puts work can help you make more informed trading decisions.
Understanding cash-secured puts
A cash-secured put is an options strategy in which an investor sells a put option while setting aside enough cash to purchase the underlying stock if assigned. When a put option is sold, the seller agrees to buy a stock at a predetermined strike price if the buyer exercises the option before or upon expiration. By placing the trade with cash equivalent to the strike price multiplied by 100 shares (each options contract represents 100 shares), the seller ensures that the obligation can be met if assigned.
Cash-Secured Puts in Action
Scenario 1: Put expire worthless
An investor sells a Microsoft (MSFT) $100 cash-secured put expiring on 18 Jan, based on a willingness to purchase MSFT stock at $100 per share. The investor collects a premium of $2.90 per share, or $290 total at the time of the sale. If MSFT remained above the $100 strike price at expiration, the put option would expire worthless. The investor retains the full premium without being obligated to purchase the stock.
Scenario 2: Assigned the stock
The same investor sells the Microsoft (MSFT) $100 cash-secured put for a $2.90 premium. If MSFT trades below $100 at expiration, the option is in the money, and the seller is assigned the stock. The investor must buy 100 shares at $100 each but keep the $290 premium received from selling the option, effectively lowering the purchased price to $97.10 per share.
Benefits of cash-secured puts
The primary benefit of selling cash-secured puts is generating income through the premium collected regardless if the option is exercised or not. Additionally, the strategy allows investors to potentially purchase stocks they already want to own at a discount. If the stock drops below the strike price, the investor is assigned the shares but acquires them at an effective cost that is lower than the market price at the time of the option sale, thanks to the premium received. Another key benefit is the defined and limited risk; since the trade is fully backed by cash, there’s no risk of a margin call.
Potential Trade-offs and Drawbacks
While cash-secured puts are considered a conservative and income-oriented strategy, they come with certain trade-offs. One of the primary limitations is the capped upside potential. The maximum profit is limited to the premium received. Unlike owning the stock directly, the seller does not benefit from any capital appreciation beyond the strike price. Additionally, the strategy requires the seller to set aside a substantial amount of cash to cover a potential stock purchase. This can lead to opportunity costs, particularly in strong bull markets. Suppose the stock falls significantly below the strike price. In that case, the seller may be assigned and required to purchase the shares at a price well above the market value, resulting in paper losses, although partially offset by the premium.
Conclusion
Cash-secured puts offer an attractive, lower-risk strategy for investors who are both income-oriented and open to acquiring shares at a discount. While the gains are capped and the capital tied up, the trade offers a defined risk profile, the potential for enhanced entry pricing and a way to earn passive income. Investors should weigh these trade-offs carefully, especially in volatile or strongly rising markets.
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About the author
Global Markets Desk US Dealing Team
The Global Markets Desk US Dealing team specialise in handling the US Markets in the Global Markets Desk.
Their responsibilities and capabilities extend from managing and taking orders from clients trading in the US market, to content generation, Technical Analysis and providing educational content to POEMS clients.