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My reverse split left me with odd shares. Can I still sell calls?

No, not a normal covered call. A standard contract covers 100 shares, and after a 1-for-10 reverse split your 100 shares are now 10. You can hold, sell, or buy back up to 100. Each choice costs something different.

Options guide · 8-minute read · Updated 2026-10-28

Where you are right now

You were running the wheel strategy. You sold a put, got assigned, and now own 100 shares. The stock kept falling. Then the company did a reverse split.

Now your account shows 10 shares where 100 used to be. The price per share is ten times higher. The total value is the same as the day before. But your plan just stopped working, because the next step of the wheel is selling a Covered call, and that needs 100 shares.

You didn't do anything wrong by holding through a reverse split. It happens to anyone who owns a stock that has fallen a long way. The question now is what to do with the shares you have.

For how the split changed any option you had open, see what happens to options in a reverse split. For the full list of events, see my hub on corporate actions and your options.

Why you can't sell a normal covered call

A standard listed option delivers 100 shares. To be "covered," you must own all 100.

With 10 shares, a new call on the new stock would be covered for 10 shares and uncovered for 90. Most brokers won't allow that at basic approval levels. Where they do, the 90 uncovered shares carry the risk of a naked call. That is not the wheel any more. Don't do it to "keep the premium coming."

Your 10 shares are an Odd lot: fewer than a round 100. You can still hold them, sell them, or add to them.

What about a call you already had open when the split happened? That contract was adjusted to deliver 10 new shares. Your 10 shares still cover it. Let it run its course. You'll land in this same spot when it ends.

Your numbers (hypothetical)

This is an illustration, not a trade idea. XYZ is a made-up stock.

Your Cost basis moves with the split. Counting the $40 premium, it was $4.60 a share on 100 shares. Now it is $46 a share on 10 shares. The total is still $460.

You are down $200 on the shares, or −$160 after the $40 premium.

Your three choices, side by side

ChoiceNew cash neededNew XYZ falls to $20New XYZ stays at $30New XYZ rises to $40
A. Buy 90 more shares at $30$2,700−$1,160−$160+$840
B. Sell your 10 shares at $30$0−$160−$160−$160
C. Hold the 10 shares, sell no calls$0−$260−$160−$60

All rows include the $40 premium you already collected.

Choice A: buy back to 100. You'd spend $2,700 for 90 more shares. Your 100 shares would cost $3,200 in total, an average of $32 each. Then you could sell calls again. But your position is now more than six times bigger, on a stock that just needed a reverse split to stay afloat. If it slides to $20, the loss grows from $160 to $1,160.

Choice B: sell the 10 shares. You take the $160 loss today. Your $300 goes back to cash, toward a put on a stock you'd rather own. Nothing more can go wrong with XYZ.

Choice C: hold and wait. No new cash and no new risk added. But no premium either. You're just a shareholder in 10 shares, and the wheel is paused on this stock.

The trap in choice A

Choice A feels like getting back on plan. It is really a new decision: "Would I put $2,700 into this stock today, at this price?"

If you'd say yes to that question with fresh money, A can make sense. If the only reason is to sell calls again, that's the premium leading the decision. That is how small losses turn large.

Here is the losing case worked out. You buy 90 shares at $30 for $2,700. New XYZ drifts down to $20.

Amount
Total paid for 100 shares$3,200
100 shares at $20$2,000
Loss on shares−$1,200
Premium collected earlier+$40
Net result−$1,160

Even if you sold a call each month while it fell, a few small premiums would barely dent a $1,200 drop.

What if the ratio left a fraction?

Some ratios don't divide 100 evenly. In a 1-for-15 split, 100 shares become 6.67. Brokers usually give you 6 shares plus cash for the 0.67. That "cash in lieu" can count as a small sale. How it is reported for tax depends on your broker, so check its statement.

If you trade in Canada, the same 100-share rule applies in a TFSA or RRSP. Covered calls are widely allowed there, but options permissions differ by broker.

The rule for next time

Questions

Can I sell a covered call with 50 shares?

Not a standard one. A normal contract covers 100 shares. With 50, the call would be half uncovered, which most brokers won't allow at basic levels and which carries naked-call risk.

Does a reverse split change my cost basis?

The total stays the same. The per-share basis is multiplied by the split ratio. In a 1-for-10, $5 a share on 100 shares becomes $50 a share on 10 shares.

Should I buy more shares to get back to 100?

Only if you'd make that purchase with fresh money anyway. Buying just to sell calls again makes the position bigger on a stock that has already been falling.

What happens to the fraction of a share after a reverse split?

Usually you get cash for it instead. That small cash payment may be treated as a sale, so check your broker's statement.

Follow along

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