Imagine you want to buy AAPL, but you think $230 is a bit expensive. You'd love to buy it at $220 instead. A cash-secured put lets you get paid to wait for that lower price.
You sell a put option at the $220 strike and collect premium upfront. If AAPL stays above $220, the put expires worthless and you keep the premium — free money. This is the foundation of the Wheel strategy. If AAPL drops below $220, you buy the shares at $220 — the price you wanted anyway — and you still keep the premium, making your effective purchase price even lower.
How do cash-secured puts work?
Pick a stock you want to own
You've done your research. You like AAPL as a long-term holding, but you'd prefer to buy it at a lower price.
Sell a put at your target purchase price
You sell a $220 put expiring in 30–45 days. This obligates you to buy 100 shares at $220 if the stock drops that far.
Set aside the cash
Your broker holds $22,000 (100 shares × $220) as collateral. This is the "cash-secured" part — you have the money to fulfill your obligation.
Collect premium and wait
You receive $2.50/share ($250 total) immediately. Now you wait for expiration. Theta decay works in your favor every day.
What are the two outcomes of a cash-secured put?
Best case — Stock stays above $220
The put expires worthless. You keep the $250 premium and your $22,000 cash is released. You can sell another put and repeat.
YOUR RESULT
+$250 profit
1.1% return on $22,000 in 30–45 days
Other case — Stock drops below $220
You buy 100 shares at $220 (the price you wanted). You still keep the $250 premium, so your effective cost basis is $217.50/share.
YOUR RESULT
Buy AAPL at $217.50
5.4% below current price of $230
Either way, you win — you either collect free income or buy a stock you wanted at a discount. The only bad outcome is if the stock drops significantly below $220.
What does a cash-secured put look like in practice?
Setup
AAPL trades at $230. You sell a $220 put expiring in 35 days for $2.50 ($250 total). You set aside $22,000 in cash as collateral.
| If AAPL closes at... | What happens | Your P&L |
|---|---|---|
| $240 | Put expires worthless | +$250 (premium kept) |
| $225 | Put expires worthless | +$250 (premium kept) |
| $220 | Put expires worthless (right at strike) | +$250 (premium kept) |
| $215 | Assigned: buy 100 shares at $220 | −$250 unrealized (own shares at $217.50 net) |
| $200 | Assigned: buy 100 shares at $220 | −$1,750 unrealized (own shares at $217.50 net) |
The premium creates a buffer. Even if you get assigned, your effective cost ($217.50) is lower than the strike price ($220). You only start losing money if AAPL drops below $217.50.
When should you sell cash-secured puts?
You want to buy a stock at a lower price
This is the classic use case. Instead of setting a limit order and waiting, you get paid to wait. If the stock never drops to your price, you've still earned income.
You have idle cash earning nothing
Money sitting in a brokerage money market fund earns 4-5%. Cash-secured puts on quality stocks can earn 1-2% per month — significantly more, with the trade-off of potentially owning shares.
You're starting the Wheel strategy
The Wheel begins with selling puts. If assigned, you then sell covered calls on your new shares. It's a perpetual income cycle that starts right here — read the full Wheel strategy guide.
What are the risks of selling cash-secured puts?
Cash-secured puts are not risk-free. You need to understand what can go wrong:
If AAPL drops to $180, you're buying at $220 (net $217.50) — an immediate $37.50/share unrealized loss. You still own a quality company, but the short-term pain is real. Only sell puts on stocks you genuinely want to own long-term.
The $22,000 cash is locked as collateral for the duration of the contract. You can't use it for other investments. If a better opportunity appears, you can buy back the put — but it might cost more than you received.
If AAPL rallies to $260, you keep the $250 premium but never get to buy the shares. You "missed" a $30/share gain. But you never owned the shares, so this isn't a loss — it's just a missed opportunity.
Why not just set a limit order?
| Approach | If stock stays above $220 | If stock drops to $215 |
|---|---|---|
| Limit order at $220 | Nothing happens. You earn $0. | Buy at $220. Cost basis: $220. |
| Sell $220 put | Keep $250 premium. Earn income. | Buy at $220. Cost basis: $217.50. |
The put seller wins in both scenarios: either you earn free income, or you buy at a better effective price. The only downside is the commitment — you can't easily cancel a put the way you can cancel a limit order.
Warren Buffett famously used this approach with Coca-Cola in 1993, selling 30,000 put contracts at a $35 strike when KO traded near $40 — collecting roughly $7.5 million in premium while waiting for his target price. The logic is simple: you either get paid to wait, or you buy at a discount.
— Documented in Berkshire Hathaway filings and shareholder letters
Is this for you?
Cash-secured puts work best for patient investors with $10,000+ in available cash who want to earn income while waiting to buy quality stocks. You need options approval from your broker (usually Level 1 or 2). Use delta to choose a strike that matches your comfort level. You need enough cash to cover 100 shares at your chosen strike price.
Frequently asked questions
What is a cash-secured put?
A cash-secured put is when you sell a put option on a stock you'd like to own, while keeping enough cash in your account to buy 100 shares at the strike price. You collect premium upfront. If the stock stays above the strike, you keep the premium as profit. If it drops below, you buy the shares at a discount (strike price minus premium collected).
How much money do I need to sell cash-secured puts?
You need enough cash to buy 100 shares at the strike price. For a $220 put, that's $22,000. For a $50 stock, that's $5,000. This cash is held as collateral by your broker. You can start with lower-priced stocks to reduce the capital requirement.
What happens if I get assigned on a cash-secured put?
You buy 100 shares at the strike price using the cash you set aside. The premium you collected reduces your effective cost basis. You now own the shares and can hold them, sell them, or start selling covered calls against them (the Wheel strategy).
Are cash-secured puts safe?
Cash-secured puts are a defined-risk strategy — your maximum loss is known upfront (strike price × 100 shares, minus premium). They're considered safer than buying stock outright because the premium provides a buffer. But they're not risk-free: if the stock drops significantly, you'll own shares at an above-market price.