Options Primer Part 5: Selling Options
Every option has a buyer and a seller. The $100 call from Part 3? Someone sold it for $4.20 and kept the premium when WidgetCo crashed.
This part covers the mechanics of selling and why, mathematically, selling options tends to be profitable.
The volatility risk premium
Options are priced using implied volatility - the market’s estimate of future stock movement. Here’s the key fact: IV is systematically higher than realized volatility.
Why? Options are insurance. Buyers pay a premium for protection against large moves. Sellers demand compensation for taking on tail risk. That compensation - the gap between implied and realized volatility - is the volatility risk premium.
Empirically, the VIX (S&P 500 implied volatility) exceeds subsequent realized volatility about 85% of the time. The average spread is about four volatility points.
This means selling options has positive expected value. The risk premium compensates sellers for absorbing losses during market crashes, earnings disasters, and black swan events.
Pennies in front of a steamroller
The math: collect small premiums frequently, pay large claims rarely. On average, the premiums exceed the claims.
This gets called “picking up pennies in front of a steamroller.” The metaphor overstates it - you’re not picking up pennies, you’re running an insurance business. Insurance companies are profitable. They just occasionally pay out large claims.
But the metaphor captures something real: the P&L distribution is asymmetric. Months of steady gains, then one bad week erases them. You can be “right” 90% of the time and still lose money if the 10% hits hard enough.
Cash-secured puts
A cash-secured put (CSP): sell a put, hold cash to buy shares if assigned.
WidgetCo at $50. Sell a $45 put, 30 DTE, collect $1.50 ($150 per contract).
The obligation: buy 100 shares at $45 if assigned. Need $4,500 cash to cover.
Drag the stock price. Above $45: keep $150. At $43.50: breakeven. Below: losing money.
Maximum gain: $150. Maximum loss: $4,350 (stock to zero, minus premium).
Stock drops to $44 at expiration. The put is exercised. You now own 100 shares at $45 cost basis. Time to sell calls.
Covered calls
A covered call (CC): own shares, sell a call against them.
You own 100 shares at $45. Stock at $44. Sell a $50 call, 30 DTE, collect $0.80 ($80).
The obligation: sell shares at $50 if called away.
Drag the stock price. Below $50: keep shares and premium. Above $50: called away, miss upside beyond strike.
Stock drifts to $47. Call expires worthless. Collect $80, still own shares.
The wheel
What if you just kept selling options no matter what happens?
Sell a put. If it expires worthless, keep the premium, sell another. If you get assigned, you now own shares - so sell calls against them. If the call expires worthless, sell another. If you get called away, you’re back to cash - sell puts again.
That’s the wheel. CSP → assigned → CC → called away → repeat.
The 45-day expiration comes from Part 4: theta accelerates near expiration, but so does gamma. TastyTrade’s research found 45 DTE balances premium collection against the risk of sudden moves.
Try it. Sell puts until assigned, then sell calls until called away.
The missed move
Run the wheel long enough and you’ll get called away right before a rally. Stock gaps up, your shares are gone at the strike price, and you watch the stock climb without you.
That’s the trade-off. You collected premium along the way. But when the stock doubles, you don’t double with it.
When this makes sense
The wheel works when realized volatility stays below implied - when the market overestimates how much stocks will move. Historically, that’s most of the time. The strategy fits investors who want income over growth, can tolerate holding individual stocks through drawdowns, and have the capital to secure puts.
Retirees sometimes run wheels on blue chips for income. It’s active management with real risks, but the math favors sellers. If that sounds like work, JPMorgan’s JEPI and JEPQ run covered call strategies on the S&P 500 and Nasdaq respectively. You get the volatility risk premium without the position management.
This series was about the math. Options are derivatives - their prices derive from stock prices, time, and volatility through functions we can write down. The Greeks measure sensitivity to each input. Buyers pay for movement. Sellers collect premium for absorbing risk.
Whether you trade options is a different question. But now you know what you’re looking at.
This is Part 5 of a 5-part series on options. Part 4 covers the Greeks. Part 1 is where it started.