Bullish

Cash-Secured Put

Q: How much capital do I need for a cash-secured put?

The strike multiplied by 100, in cash and blocked. To sell a 50-strike put you need $5,000 available. That is precisely the point of the structure: if assigned, you can buy the shares without resorting to margin or unwinding other positions.

Q: What do I do if the underlying collapses?

You have three options. Accept assignment if you still want the shares at that price, which is the scenario the strategy was designed for. Roll to a later expiration and lower strike if you think the decline is temporary. Or close and take the loss if the thesis is broken. What never works is improvising without having decided in advance.

Q: Is this the same as the wheel?

The cash-secured put is the first half of the wheel. The full strategy means selling puts until you are assigned, then selling covered calls on the acquired shares until they are called away, repeating the cycle. It is a systematic way of collecting premium on both sides of the cycle.

Selling a cash-backed put to generate income with the chance to buy shares at a discount.

Max GainPremium received

Max LossCapped (Strike − Premium)

Break-evenStrike − Premium

TypeCredit

Ideal IV environmentHigh IV (IV Rank ≥ 50) — you collect rich premium and profit from volatility compression

Profit / Loss Diagram

Cash-Secured Put at expiration

What is this strategy?

The Cash-Secured Put is the safe variant of the Short Put, where the account holds sufficient cash (equal to strike × 100) to buy the shares if assigned. It is a very popular strategy among investors seeking recurring income while retaining the flexibility to buy shares at a desired price.

The great advantage over the naked short put is that it requires no margin and the structure is more transparent: you have cash explicitly reserved for potential assignment. If assigned, you simply use that reserved cash to buy the 100 shares. If not, the cash remains available and you repeat the strategy.

The Cash-Secured Put suits bullish investors with cash on hand who are willing to buy shares at a specific price. It generates positive-theta income monthly or weekly. It is safer than the naked short put from a regulatory and margin perspective, making it accessible to more traders. Breakeven is calculated by subtracting the premium from the strike.

Construction

Action	Instrument	Strike	Expiration	Example
RESERVE CASH	Strike × 100	N/A	N/A	Cash $42,000 (420 × 100)
SELL	1 Put	ATM or slightly OTM	30-60 DTE	-1 SPY Jun 420 Put

Example

Scenario: SPY at $430. You are bullish but would be happy buying at $420. You have $42,000 available.

Cash Reserved $42,000 (420 strike × 100 multiplier)
Premium Received +$400 (-1 SPY Jun 420 Put @ $4.00)
Maximum Gain $400 (premium received)
Maximum Loss $41,600 (420 − 4 = 416 × 100)
Breakeven $416.00 (420 strike − 4 premium)
Entry Cost if Assigned $416 per share (strike less premium)
Profit if SPY > 420 at Expiry $400 (maximum gain)

The Greeks

δDelta — Positive

The short put carries positive delta. If assigned, you convert into a long stock position with delta of +100 per contract.

θTheta — Positive

You gain every day that passes while price stays above the strike. Time favours the put seller.

νVega — Negative

Rising implied volatility hurts your short put. You prefer low or falling volatility.

γGamma — Negative

The short put’s negative gamma accelerates losses on declines, though they remain capped at the strike.

Position Management

01
Define Your Target Purchase Price Selling a $420 put says you would be happy buying at $420 less the premium. Make sure that is a rational entry price for you.
02
Close Early on Profits Do not wait for expiration. If price stays above the strike and you have captured 50% of the premium, consider closing and repeating.
03
Prepare for Assignment If price reaches the strike, be ready to be assigned. You will hold 100 long shares. Will you keep them or sell? Decide in advance.
04
Roll Down and Out If price falls toward the strike, close the current position and sell a new put at a lower strike and/or later expiration to lower your entry cost.
05
Repeat Cyclically If it expires unassigned, your cash is free again. Repeat the cycle by selling another put on the same or a different name for recurring income.

Frequently Asked Questions

How much capital do I need for a cash-secured put?

The strike multiplied by 100, in cash and blocked. To sell a 50-strike put you need $5,000 available. That is precisely the point of the structure: if assigned, you can buy the shares without resorting to margin or unwinding other positions.

What return can I expect?

It depends on implied volatility, but as an order of magnitude, selling 0.30-delta puts at 45 days on liquid underlyings typically yields 1% to 2.5% of the blocked capital per cycle. Annualised that looks very attractive, but the return is not guaranteed and a sharp decline can erase several cycles at once.

What do I do if the underlying collapses?

You have three options. Accept assignment if you still want the shares at that price, which is the scenario the strategy was designed for. Roll to a later expiration and lower strike if you think the decline is temporary. Or close and take the loss if the thesis is broken. What never works is improvising without having decided in advance.

Is this the same as the wheel?

The cash-secured put is the first half of the wheel. The full strategy means selling puts until you are assigned, then selling covered calls on the acquired shares until they are called away, repeating the cycle. It is a systematic way of collecting premium on both sides of the cycle.

Profit / Loss Diagram

What is this strategy?

Construction

Example

The Greeks

Position Management

Frequently Asked Questions

Términos Relacionados