The Cash-Secured Put: Getting Paid to Wait for a Lower Price

A cash-secured put means selling a put option while holding enough cash to buy the shares if you are assigned. You collect the premium now, and in return you agree to buy 100 shares at the strike price if the stock is below it at expiration.

The payoff

At expiration:

• Stock above the strike: the put expires worthless and you keep the premium.
• Stock below the strike: you are assigned and buy the shares at the strike. Your effective cost is the strike minus the premium received.

Worked example

A stock trades at $52. You sell one 30-day put with a $50 strike for $1.50 ($150) and set aside $5,000 in cash.

• Maximum profit: $150, if the stock stays above $50.
• Break-even: $50 − $1.50 = $48.50.
• If assigned: you own 100 shares at an effective cost of $48.50.
• Maximum loss: $4,850 if the stock went to zero, the same as owning the shares from $48.50.

Why traders use it

• To buy a stock they want at a lower price, and get paid while waiting.
• To earn premium in a flat or rising market.
• As the first half of the "wheel": sell puts, get assigned, then sell covered calls on the shares.

Risks

• Large downside. A short put has a similar risk to owning the stock below the break-even, but with the profit capped at the premium. A sharp drop, such as after earnings, can produce a large loss.
• Small, frequent wins and rare big losses. This pattern can look excellent on win rate until a big loss arrives.
• Opportunity cost. If the stock rallies hard, you only earn the premium.

The covered call and the cash-secured put have the same payoff shape at expiration; both are short-volatility, short-put-like positions.

Managing the trade

• Many traders close short puts once a large share of the premium, often half or more, has been earned, rather than holding to expiration.
• Some roll the put to a later date or lower strike if the stock falls, which extends the trade but also the risk.
• Avoid selling puts just before earnings unless you accept the gap risk.

Tracking it

Record the premium, strike, expiration, and any assignment, and link the assigned shares to the put trade so your total return is accurate. In TradeThink, short puts and the shares from assignment appear in your trades, and the risk profile shows the payoff at expiration and today. Related: the options greeks.