Cash-Secured Puts Explained
Learn cash-secured puts, including premium, assignment, breakeven, downside risk, and contract selection.
A cash-secured put means selling a put while holding enough cash to buy the shares if assigned.
Before risking money
Know the max loss and the dollar amount after the 100-share multiplier.
Paper trade the exact contract and record bid, ask, midpoint, IV, and Greeks.
Avoid contracts with wide spreads, stale quotes, or thin open interest.
Understand expiration and what happens if you hold too long; short-option positions add assignment risk.
Lesson
Plain-language concept
The seller receives premium and accepts the obligation to buy shares at the strike. The cash reserve is there because assignment can require buying 100 shares per contract.
Lesson
What can go wrong
The risk is stock downside. If the stock falls far below the strike, the premium may be small relative to the loss on assigned shares.
Lesson
When to use CuteMarkets data
Use chain data to compare put premium, delta, IV, expiration, spread, volume, and open interest before modeling assignment scenarios.
Numeric example
Cash reserve and breakeven
Setup
- Sell $40 put for $1.50
- Multiplier: 100
- Cash secured: $4,000
Outcome
- Premium received is $150.
- Assignment buys 100 shares at $40.
- Effective breakeven is $38.50 before fees.
Cash-secured does not mean risk-free. It means the obligation is funded.
Practice surfaces
Tools that make this visible
Options Greeks Calculator
Change price, strike, time, and volatility to see option value and Greeks move.
Options Chain Visualizer
See strikes, expirations, IV smile, spreads, volume, and open interest in one view.
Options Liquidity Scanner
Rank contracts by spread, volume, open interest, IV, and quote context.
Data references
Docs behind the concept
FAQ
Common beginner questions
Can a cash-secured put lose money?
Yes. Loss occurs if the stock falls below the effective breakeven.
Why sell puts?
Some traders sell puts to collect premium or enter stock at a lower effective price, but the risk must be understood.
What happens if assigned?
You may have to buy shares at the strike price.