- Covered call position sizing beats stock picking when you build a cashflow machine instead of a buy-and-hope portfolio.
- I run 50-60% in a core income sleeve of covered calls, 25% in growth, 15% cash or short-term Treasuries, and the numbers work whether the market sleeps or screams.
- Ed Thorp taught me to think in probabilities; I apply that by never letting any single covered call trade top 5% of total equity and by wiring in a 200% upside exit rule.
- Account size changes the math: at $250k you care about commissions drag, at $1m you watch tax lots, at $5m you start hiring a trader so you can go sailing.
- Every position gets a circuit breaker: if the stock collapspieces 20% or the call premium collapses 50%, we close, period, no bedtime story about “it will come back.”
I still remember October 27, 2008. The VIX had touched 80 and the talking heads on CNBC looked like they had seen a ghost. I was sitting in a Denver hotel suite with a calculator, a yellow legal pad, and 40% of my net worth in cash that I’d raised two months earlier. By the end of the week I owned 12 dividend-paying names and had sold calls 5-7% out of the money against every single share. The premium I collected that Friday was 4.8% of total capital, in one week. The market kept falling, but my account printed income. That was the day I stopped asking “Where will the market go?” and started asking “How much income can this capital generate?” Covered call position sizing became the rest of my life’s work.
Fast forward to 2023. Covered calls are fashionable again, but most investors still treat them like a side hustle instead of the engine. They buy 100 shares of Tesla, slap on a call, and pray the thing doesn’t get called away. That’s not a system, that’s a coin flip. If you want the strategy to pay your bills whether the market goes up, down, or sideways, you have to treat position sizing like a professional. I’ve managed $25 million of my own money through every curve ball of the last 15 years. What follows is the exact framework I use today, updated for account sizes from a quarter million to eight figures.
Why position sizing matters more than picking the “right” stock
People think investing is about finding the next Amazon. I’ve found that avoiding the next Enron matters more. William O’Neill taught me to cut every loss at 7-8%. Edward Thorp the mathematician, not the options pioneer, taught me to think in expected value. When you combine the two, you realize that a 2% position that loses 50% hurts you less than a 20% position that drops 25%. The math is brutal: the big position leaves a scar, the small one leaves a scratch.
Covered calls add a second layer of protection, but they also cap the upside. If you size too large and the stock rockets through your short call, you watch your neighbors get rich while you collect pennies. Size too small and the premium won’t move the needle. The sweet spot lives in the middle, and it’s different at $250k than it is at $5m. I’ll show you the exact percentages I use, but first you have to accept that position sizing is the secret sauce, not the ticker symbol.
The probability stacking frame (Thorp → O’Neill → my system)
In 1967 Ed Thorp published “Beat the Market,” the first book that proved you could manufacture risk-free profits with convertible hedges. The key insight: if you could stack small edges repeatedly, the casino eventually belongs to you. I read that book in 1982, then spent the next decade inside O’Neill’s data-driven CANSLIM world. When I merged the two, I stopped trying to predict direction and started stacking probabilities in my favor.
A covered call is three bets in one: the stock drift, the volatility collapse, and the time decay. If I sell a 30-delta call on a low-beta dividend aristocrat, I win on two of those bets 70% of the time. Do that 40 times a year with strict position limits and the expected value compounds faster than the underlying equity. That’s the engine. You can read the mechanics here, but the headline is simple: stack small, frequent edges, never bet the farm on one.
A concrete rule-of-thumb framework
I run three sleeves, and I rebalance quarterly. The numbers look like this:
- Core income sleeve: 50-60% of total net worth, all in covered calls on blue chips and ETFs with liquid options. No single name above 5% of total equity. I hold 15-20 positions so correlation can’t sink me.
- Growth sleeve: 20-30% in uncapped upside, mostly CANSLIM style breakouts or small-cap ETFs. I’ll sell puts to enter, but I do not cap the upside once I own the shares.
- Cash or 3-month Treasuries: 10-20%. This is my “sleep well” bucket. When VIX spikes above 30, I rotate this cash into new covered call positions, effectively dollar-cost averaging fear.
That 5% single-name limit is carved in stone. If Apple climbs to 6% because the stock runs, I trim the position on the next monthly roll. Discipline beats conviction every time.
The circuit breaker rule
Every covered call I enter has two wires attached. First, if the stock drops 20% from my entry, I close the entire package, stock plus short call, no questions asked. Second, if the short call collapses to 0.05 bid, I buy it back early and look to resell a new strike. The first rule keeps a bad earnings surprise from turning into a 2008 bank-like death spiral. The second rule harvests leftover time value instead of letting it rot. These two rules have saved me seven figures over the years, and they take emotion off the table.
What changes when you have $250K vs $1M vs $5M+ accounts
At $250k you care about commission drag. I use zero-commission brokers and trade ETF covered calls more than singles names. A 1% round-trip commission on a 3% premium eats a third of your edge. You also need 10-12 positions, not 20, or the account starts looking like a mutual fund with higher friction.
At $1m you start watching tax lots. I sell calls out of the highest-cost shares first, building a deferred-loss bank for the years when growth sleeve hits home runs. You can afford 20 positions and you negotiate margin rates down to 150 bps over Treasuries.
At $5m plus you hire a part-time trader. I pay a CMT $75k a year to watch my book when I’m kiteboarding in Baja. The software bills are deductible, and you get professional market-making fills. Position sizing stays the same, but execution speed jumps. You also start thinking about estate planning, so we house the income sleeve inside a separate taxable account that will eventually fund a GRAT. The math stays identical; the wrapper evolves.
How much of my portfolio should I use for covered calls?
Target 50% of investable assets inside a core income sleeve of covered calls, spread across 15-20 names, with no single position above 5% of total net worth. That level generates 8-12% cash annually without turning your account into a bond.
What is a good position size for a covered call?
Never more than 5% of total equity in one ticker. If your net worth is $1 million, that means $50k max in any single stock-plus-call package. This keeps a 20% gap-down from stealing more than 1% of your overall portfolio.
Can I run covered calls on my whole portfolio?
You can, but you shouldn’t. Leave 20-30% in pure growth names with no call sold against them so you still participate when the next Tesla runs 500%. Income beats buy-and-hope, but keeping some upside unclipped keeps the strategy psychologically sustainable.
If you want to watch me build these positions in real time, the videos are free on YouTube. And when you’re ready to stop guessing and start systematizing, the next step is at https://cashflowmachine.net/options-mentorship. I’ll see you there.
This is education, not financial advice. Past performance is not indicative of future results. Consult a qualified advisor before making investment decisions.