Options Academy
Cash Secured Puts 102: The Mathematics of ROI
How do you calculate the return on a CSP? We explore the math of "Return on Capital", the "Margin of Safety", and why dividends actually HELP put sellers.
Calculating Return on Capital (ROC)
To compare a CSP to a bond or stock dividend, you need to annualize the return.
Formula: (Premium / Cash Collateral) x (365 / Days to Expiration).
Example: Sell $50 Put for $1.00 (30 days). Collateral = $5,000.
Return = ($100 / $5,000) = 2% in 30 days.
Annualized = 2% x 12 = 24%. This is how income traders target 20%+ yields.
The Dividend Bonus
Here is a secret: Dividends HURT call sellers, but they HELP put sellers.
When a stock goes ex-dividend, its price drops. The market prices this expected drop into the Put Option premiums.
This means Puts on high-dividend stocks are often more expensive (richer premium) than calls. You get paid extra to accept the risk of the dividend drop.
Margin of Safety
Your Break-even point is your "MoS".
If Stock is $55, and you sell the $50 Put for $2.00.
Break-even = $48.
The stock can drop $7 (12.7%) before you lose a single penny. This buffer is why CSPs are considered safer than pure stock ownership.
Stock Price
$55.00
Strike Price
$50.00
Premium
$2.00
Buffer (MoS)
12.7%
Key takeaways
- Use Annualized ROC to compare opportunities.
- Dividends increase put premiums, giving sellers a bonus.
- The Premium acts as a "Margin of Safety" against price drops.
- You can generate stock-like returns with less volatility.
Series
Cash Secured Put Masterclass
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