Are there shares sitting in your account that haven’t done anything in years?
Lots of portfolios contain them. An old stock purchase. Bought years ago. Survived some good turmoil. Now quietly collects dust. It’s not losing money. But it sure isn’t making much either. Just sitting there looking benign.
That is exactly the problem.
Idle equity seems safe. After all, nothing is happening to it. But nothing happening has an opportunity cost. And opportunity cost never appears on a brokerage statement. So virtually no one ever sees it. It sits silently… month after month… year after year.
Here’s the thing:
That equity is already deployed. Capital is already committed. Risk is already being assumed. The only issue remaining is whether the position rewards.
Selling call options against shares you already own is one answer. Selling covered calls is one of the most straightforward methods to generate income from stocks that would otherwise be non-productive, and you get the premium deposited into your account immediately. However, the risks involved with selling covered calls are very real, and warrant consideration before that first contract gets sold.
Here’s how it all fits together…
What’s coming up:
- Why Idle Shares Behave Like A Carrying Cost
- What Selling A Call Actually Does
- The Covered Call Risks Nobody Advertises
- How To Weigh The Cost Against The Risk
Why idle shares behave like a carrying cost?
No accountant would ever categorize “unused stock” as an expense. Yet a dead position essentially is one.
Think about what it ties up:
- Capital that could be working somewhere else
- Risk that is being carried for nothing in return
- Time, which never gets refunded
When a stock trades sideways for three years it has still endured every drawdown along its path. 100% of the risk. 0% of the reward. That’s a cost. You just never get the bill.
Here’s a simple experiment that proves it. Put that exact same money into cash. Pressure builds within most people to do something with that cash. Stocks receive a free ride, because they appear to be working. They are. They’re just not working anywhere.
Dividends help. Only they don’t help very much. Many very high quality companies pay nothing. Lots of others pay so little that inflation eats it up before it hits your account. Then the shares just sit there absorbing volatility gratis.
And that’s the part most investors miss.
Neutral stance does nothing. It’s slowly costing you money. The balance sheet is just too afraid to admit it.
What selling a call actually does?
The covered call is structurally straightforward. The investor already owns shares. He or she sells a call option against them. The call buyer pays a premium for the right to purchase those shares at a predetermined price until a specific date.
The premium gets kept either way. That’s the appeal.
Demand has skyrocketed. Option Market Clearing volume hit 15.2 billion contracts in 2025 alone, a jump of more than 24% compared to the previous year. Institutions have piled into them as well — Morningstar reports that $100 billion poured into covered call funds over three years.
It’s not some obscure strategy. It’s one of the most popular income plays available today.
However, popularity doesn’t equate to safe. And this is where covered call risks begin to come into play.
The covered call risks nobody advertises
Every strategy has a trade-off. This one has 4x of them worth knowing about.
Capped Upside Is The Big One
By selling a call you are locking in a top selling price. If the stock rockets above that strike price the additional profit goes to someone else.
Imagine buying a share at $40 and selling a $45 call against it for a few bucks of premium. The company announces a blowout quarter and the stock shoots up to $62. Said shares get called away at $45. The premium was retained, but the massive move was given up.
That is the worst pain in the covered call game because you can’t see it. There is nothing that showed up as being “lost” on paper. The gain just never materialized.
The downside still belongs to the owner
Premium is not protection.
If the stock crashes the seller STILL owns every penny of that downward move. The premium cushions the impact by a few percent… THAT’S IT.
Anyone who thinks you can hedge with a covered call has misunderstood the trade. It’s padding. It’s not protection.
Assignment rarely arrives at a convenient moment
Shares can be called away early, especially near dividend dates. This can create an unexpected tax event in a year it was not desired.
When you are in a position for some time that has a low cost base this is very important. Even a winning trade can generate a huge unwanted tax bill.
The behaviour risk
This one gets ignored, and it shouldn’t.
Steady premium income feels secure. Like earning a salary. That security causes investors to sell calls against positions that otherwise ought to be left alone, at strikes way too close, on stocks they don’t really want to assign.
Driving premiums higher typically results in selling nearer to the money – which concentrates the risks of covered calls without any deliberate decision to assume those risks.
How to weigh the cost against the risk?
So how does this get decided sensibly?
Begin with the holding itself. A screaming conviction growth stock that has the potential to double is a terrible candidate. A mature, slow moving, slightly boring holding is infinitely better. The objective is to monetise shares that won’t be moving anytime soon.
Now consider the strike price. Strikes further out of the money provide less premium but allow more room for the stock to run. That trade-off is right at the heart of managing covered call risks.
A few sensible guardrails:
- Sell calls only on stock that you could reasonably part with at the strike price
- Check earnings dates and dividend dates before writing anything
- Treat the premium as a return on idle capital, not as free money
- Never sell more contracts than the shares held can cover
The previous sentence is non-negotiable. Writing calls without actually owning the underlying shares is an entirely different trade.
Bringing it all together
Idle equity is not free. It risks loss, it ties up capital and earns you nothing while it sits. On the balance sheet it seems benign. In reality it acts like a quiet deadly hemorrhage.
Sell calls against those shares and you turn dead weight into cash flow. That’s the positive side and it is a real one.
But the covered call risks are just as real:
- Upside gets capped
- Downside stays exactly where it was
- Assignment can force a sale at the wrong time
- Easy income tempts poor decisions
It works best in spots that have already stopped moving. This is typically at strikes that give you some room to breathe and with a solid game plan if the shares are taken away from you.
Handled that way, a quiet position stops being a cost and starts paying rent.
