Cap Rate Thinking Applied to Options

Real estate investors use cap rates to value properties. Stocks can be valued the same way. A company's earnings are like rental income, and the stock price is like the purchase price. Cap rate thinking helps you decide if a stock is cheap enough to justify selling puts or buying calls.

TL;DR

• Cap rate (capitalization rate) is annual income divided by purchase price: In real estate, it's rental income / property price. For stocks, it's earnings / stock price
• Higher cap rates mean better value: A 10% cap rate means you're earning 10% annually on your investment, better than a 5% cap rate
• Cap rate is identical to earnings yield: If a stock earns $10 per share and trades at $100, the cap rate (earnings yield) is 10%
• Use cap rate to compare stocks to other investments: A stock with an 8% cap rate competes with bonds yielding 5% or rental properties at 7%
• Options let you target higher effective cap rates: Selling puts below current price increases your eventual cap rate if assigned. Buying calls amplifies returns if the stock rises

What Cap Rate Means in Real Estate

In real estate, the cap rate measures how much income a property generates relative to its purchase price.

Cap Rate = Net Operating Income / Purchase Price

Example:

You buy a rental property for $500,000. It generates $40,000 per year in net rental income (after expenses). The cap rate is 8% ($40,000 / $500,000).

An 8% cap rate means you're earning 8% annually on your investment. If comparable properties in the area have cap rates of 6%, your property is a better deal. If they have cap rates of 10%, you overpaid.

Cap rate is simple, direct, and focused on income. It ignores price appreciation and leverage (mortgages). It just asks: how much cash does this property throw off per dollar invested?

Translating Cap Rate to Stocks

Stocks work the same way. Instead of rental income, you have earnings. Instead of purchase price, you have stock price.

Stock Cap Rate = Earnings per Share / Stock Price

This is identical to earnings yield, but thinking about it as a cap rate connects stock investing to real estate logic. You're buying a business the same way you'd buy a rental property, based on the income it generates.

Example:

"IncomeCo" earns $12 per share and trades at $100. Cap rate = 12% ($12 / $100).

"HypeCo" earns $3 per share and trades at $150. Cap rate = 2% ($3 / $150).

"IncomeCo" is earning 12% per year on the stock price. "HypeCo" is earning 2% per year. If you're choosing between the two, "IncomeCo" offers better income, just like an 8% rental property beats a 4% rental property.

Cap rate doesn't tell you if the stock will rise in price. It tells you what the business is earning relative to what you're paying. That's the foundation of value investing.

Cap Rate and Options Strike Selection

When selling cash-secured puts, you're agreeing to buy the stock at a lower price if it falls to your strike. That lower strike improves your eventual cap rate if assigned.

Example:

"ValueCo" earns $10 per share, trades at $120 (cap rate = 8.3%). You sell a 60-day put at $110 strike for $3 premium.

If assigned, you buy the stock at $110, but your net cost is $107 ($110 strike minus $3 premium). Your cap rate at that price is 9.3% ($10 earnings / $107 cost). By waiting and collecting premium, you improved your cap rate by 1 percentage point compared to buying the stock at $120.

If not assigned, you keep the $3 premium and can sell another put. Over a year, collecting $3 every 60 days (six times) gives you $18 in premium income. That's effectively a 15% return on the $110 strike price you had tied up as collateral ($18 / $120 stock price = 15%).

This is why cash-secured puts are powerful for value investors. You're getting paid to wait for a better cap rate.

Cap Rate and Covered Calls

When selling covered calls, you own the stock and collect premium income by agreeing to sell at a higher price. That premium income increases your effective cap rate.

Example:

You own "IncomeCo" at $100 (cap rate = 12% based on $12 earnings). You sell a 30-day covered call at $105 strike for $2 premium.

Over a year, you sell 12 calls and collect $24 in premiums (ignoring assignment for now). Your total income from the stock is $12 (earnings) + $24 (premiums) = $36. Your effective cap rate is 36% ($36 / $100).

In reality, you'll get assigned a few times, so your returns won't be exactly 36%, but the principle holds. By overlaying options on a stock with a good base cap rate, you're boosting your income well beyond what the business alone provides.

Cap Rate Compared to Other Investments

Cap rate lets you compare stocks to bonds, real estate, and other income-producing assets.

Treasury bonds: Currently yielding around 4-5%. A stock with a 4% cap rate offers similar income with more risk (stock prices fluctuate) but more upside (earnings can grow).

Rental properties: Typically 6-9% cap rates in most markets. A stock with a 10% cap rate offers more income than real estate, with more liquidity (you can sell instantly) but less tangible security (no physical asset).

Corporate bonds: Yielding 5-7% for investment-grade bonds. A stock with an 8% cap rate offers more income, plus the potential for earnings growth, but with equity risk (stocks are junior to bonds in bankruptcy).

Example:

You have $100,000 to invest. Your options:

1. Buy Treasury bonds at 5% yield, earn $5,000 per year
2. Buy a rental property with a 7% cap rate, earn $7,000 per year
3. Buy stocks with a 10% cap rate, earn $10,000 per year (based on earnings, not dividends)

The stock offers the highest cap rate, but you're taking on more risk. If the company's earnings fall, the cap rate drops. If the stock price falls, your capital is at risk. But if the company grows earnings, your cap rate increases and the stock price likely rises too.

Options let you improve the risk-reward trade-off. Selling puts gives you income while waiting to buy the stock at a better cap rate. Selling covered calls boosts income without adding capital risk.

Cap Rate and Dividend Yield

Dividend yield measures dividends per share divided by stock price. It's similar to cap rate, but cap rate uses earnings instead of dividends.

Dividend Yield = Dividends per Share / Stock Price

Dividends are paid out of earnings. A company earning $10 per share might pay $4 in dividends and retain $6 to reinvest. The dividend yield is 4% ($4 / $100 stock price), but the cap rate is 10% ($10 / $100).

For options traders, cap rate is more useful than dividend yield because it reflects the company's total earning power, not just what's paid out. A company with a 12% cap rate and a 3% dividend yield is reinvesting 9% back into the business, which should grow future earnings and stock price. That growth potential matters for LEAPs and long-term call buyers.

A company with a 12% cap rate and a 9% dividend yield is paying out most of its earnings. That's great for income-focused investors, but it limits growth. For covered call sellers, this is ideal, high dividends plus premium income create a strong cash flow stream.

Cap Rate and LEAPs

When buying LEAPs (long-term call options), you're paying a premium to control the stock for one to two years. The cap rate of the underlying stock tells you if the investment has enough upside to justify the LEAP cost.

Example:

"GrowthCo" earns $8 per share, trades at $100 (cap rate = 8%). You buy a two-year LEAP with a $110 strike for $15.

If earnings grow 10% per year, the company will be earning $9.68 per share in two years. If the stock re-rates to a 10% cap rate (reflecting improved confidence), the stock price would be $96.80. That's below your $110 strike, so the LEAP expires worthless.

But if earnings grow 15% per year, the company will be earning $10.58 per share in two years. At a 10% cap rate, the stock price would be $105.80. Still below your strike. At an 8% cap rate (current valuation), the stock would be $132.25. Your LEAP would be worth $22.25 ($132.25 - $110), giving you a 48% return.

The key insight: cap rate tells you how much earnings growth is needed for the LEAP to pay off. If the company has a low cap rate (expensive valuation), it needs massive earnings growth to justify the LEAP. If it has a high cap rate (cheap valuation), even modest earnings growth can deliver strong LEAP returns.

Cap Rate and Margin of Safety

Margin of safety is the gap between intrinsic value and market price. Cap rate helps you quantify that gap.

If a stock has a 12% cap rate and comparable companies have 8% cap rates, the stock is undervalued. Its earnings justify a higher price. Selling puts at a strike 10% below the current price gives you an even bigger margin of safety.

Example:

"ValueCo" earns $15 per share, trades at $120 (cap rate = 12.5%). Comparable companies trade at 10% cap rates. If "ValueCo" re-rated to a 10% cap rate, it would be worth $150 ($15 / 0.10).

You sell a put at $110 strike for $4 premium. If assigned, your cost basis is $106 ($110 - $4). At that price, your cap rate is 14.2% ($15 / $106). Even if the stock never re-rates to $150, you're earning 14% per year on your investment. If it does re-rate, you'll capture 41% capital appreciation ($150 / $106 - 1).

This is how cap rate thinking reinforces margin of safety. You're buying income first, growth second. If growth happens, great. If not, you're still earning double-digit returns.

What Could Go Wrong?

Ignoring earnings quality: A company might have a 12% cap rate, but if earnings are declining, that cap rate is temporary. Next year it might be 8%, and the stock price will fall.
Mitigation: Check if earnings are growing, stable, or shrinking. Only use cap rate for companies with consistent or improving earnings.

Confusing cap rate with return on equity (ROE): Cap rate measures earnings relative to stock price. ROE measures earnings relative to the company's equity (book value). High ROE doesn't mean high cap rate if the stock is expensive.
Mitigation: Use cap rate to evaluate valuation, not business quality. Combine it with ROE, free cash flow, and competitive moats.

Overvaluing high cap rate stocks in declining industries: A company in a dying industry might have a 15% cap rate because the market expects earnings to fall. That's not value, it's a value trap.
Mitigation: Assess industry trends and competitive position before trading options. A high cap rate in a shrinking market is a warning, not an opportunity.

Forgetting about debt: Cap rate uses earnings, not free cash flow. A company might earn $10 per share but have heavy debt payments that consume most of that income.
Mitigation: Check free cash flow and debt levels. If debt is high, reduce your cap rate estimate to reflect the risk.

Using cap rate alone for growth stocks: A company growing earnings at 30% per year might have a 5% cap rate today, but it will have a 15% cap rate in three years if the stock price stays flat. Cap rate is a snapshot, not a projection.
Mitigation: Combine cap rate with discounted growth models for growth stocks. Use cap rate for mature, stable companies where growth is slow.

Next Steps

• Calculate cap rate for your watchlist: Take each stock, divide earnings per share by stock price, and compare cap rates across your portfolio. Prioritize stocks with cap rates above 10%
• Compare cap rates to alternative investments: List your current bond yields, rental property cap rates, and savings account rates. See if your stock cap rates beat those alternatives on a risk-adjusted basis
• Use cap rate to set put strike prices: For each stock, calculate what cap rate you'd achieve at various strike prices. Target strikes that deliver a 12%+ cap rate if assigned
• Overlay premium income on cap rate: If you're selling covered calls or cash-secured puts, add annualized premium income to the stock's base cap rate. This shows your total return potential
• Re-check cap rates quarterly: Earnings change. Update your cap rate calculations after each earnings report to see if a stock is getting cheaper or more expensive. Streamline the process using Wall St Yardie to quickly compare cap rates across stocks and identify the best income opportunities

Cap rate thinking brings real estate logic to stock investing. You're buying businesses based on the income they generate, not hype or momentum. Options let you improve your cap rate by selling puts, boost income by selling calls, or leverage returns by buying LEAPs. The key is starting with a strong base cap rate, then using options to enhance it.