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How do you diversify wheel positions across stocks?

Real diversification means positions that don't fall for the same reason. Five stocks in one industry are one bet. And in a crash, even different industries fall together, so caps matter more than the count.

Options guide · 9-minute read · Updated 2026-10-26

The short answer

To diversify the wheel strategy, spread your puts across businesses that don't fall for the same reason. Different industries, different kinds of customers, maybe a broad ETF. Then cap how much any one industry can take.

The number of stocks isn't the point. Five chip makers are one bet in five pieces. And in a broad crash, most stocks fall together anyway. Diversification shrinks the damage from one company or one industry. It doesn't remove the damage from the market.

Why "different stocks" often aren't

Stocks that look different can share one big risk:

• Same industry. Chip makers rise and fall on the same demand.
• Same customers. A chip maker, a chip-equipment maker and a computer maker all depend on the same buyers.
• Same driver. Banks, home builders and real estate trusts all react to interest rates.
• Same theme. Popular "story" stocks often move as a group when the mood changes.

A quick test: write one sentence for what would make each stock fall. If several sentences are the same, those stocks are one position for your caps.

A worked example where the overlap shows (an illustration, not a trade idea)

Two sellers each have $30,000. Each sells five 30-day puts at $50 strikes for $1.20 each. That's $600 collected, $25,000 promised, and $5,000 kept free. All names are made up.

• Book A looks spread out: four chip-related stocks (AAA, BBB, CCC, DDD) and one software stock (EEE).
• Book B is spread for real: one chip stock (AAA), one bank, one grocery chain, one power company, and one broad-market ETF.

First, the chip industry has a bad month. Chip stocks end 30% below their strikes. Everything else is calm.

Each chip loss is the share loss after assignment plus the premium: −$1,500 + $120 = −$1,380.

Now, a broad crash. Months later, the whole market drops. This time nearly everything falls, just by different amounts.

Both books lost. Book B lost less, because some of its names fell less. But it still lost about 18% of the account. That's the honest limit of diversification: in a crash, stocks that usually move on their own start moving together.

A real cap, not a count

"I hold five stocks" tells you very little. These caps tell you a lot more:

1. Per stock. The most one name can take. See position sizing for selling options.
2. Per industry. The most one group of related stocks can take. With five positions of about $5,000 on a $30,000 account, an industry cap of 20% allows one chip stock, not four.
3. Per driver. If three names all depend on interest rates, treat them as one industry, even if they're listed in different sectors.
4. Unused cash. A share of the account that never backs a put. It's the only position that doesn't fall in a crash. See keeping cash aside for assignment.
5. Per expiry date. Stagger dates so one bad week doesn't hit every position at once.

Write these down before you look at premiums. A falling industry often has the biggest premiums, which is exactly when a cap stops you from adding more of it.

How ETFs fit

A broad-market ETF holds hundreds of companies. One company's bad news barely touches it. That makes it a useful anchor for a wheel book. Its premium is usually smaller, because it tends to move less than single stocks.

A sector ETF is different. It spreads one industry's risk across many companies, but it's still one industry. Count it under that industry's cap. See single stock vs ETF for the wheel.

Small accounts can't spread much. One or two positions is all a few thousand dollars allows. That's fine, as long as you know it. See how many contracts to sell and the wheel with $25,000.

A note on accounts. In Canada, covered calls are widely allowed in a TFSA or RRSP, while cash-secured puts depend on the broker. Options permissions differ by broker. In the US, many IRAs allow covered calls, and some allow cash-secured puts. The caps work the same in any account.

The rule for next time

Before each new put, write the one-sentence reason it could fall, and check it against your open positions. If the reason matches one you already hold, it goes under the same industry cap. If the cap is full, the trade waits.

Book A's seller didn't do anything reckless. They found five stocks they liked. They just liked the same thing five times.

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