Lesson 14 of 20 · 7 min

What "covered" means, and what it does not protect against

Covered means the delivery obligation is pre-satisfied; it says nothing about the value of what you hold.

A short call is described as covered when the writer already holds the shares that would have to be delivered. The word is precise and narrow, and the narrowness is the lesson.

What being covered removes: the risk of having to acquire shares at an unknown future price in order to deliver them. That risk is genuinely eliminated, which is why the margin requirement on a covered short call is far lower than on an uncovered one. The delivery problem is solved in advance.

What being covered does not remove: everything that can happen to the value of the shares you hold. If the underlying falls fifty percent, the shares fall fifty percent. The premium received offsets a small part of that, and the short call was never a hedge against decline — it caps the upside, which is the opposite exposure. The position's total downside is roughly the shares' downside less the premium.

There is a second, subtler cost. A covered position converts an unbounded upside into a capped one at the strike. If the underlying rises well past the strike, the shares are delivered at the strike and the gain above it belongs to the holder of the call. So the structure trades away the right tail for a fixed payment. Whether that trade is good is not a question this curriculum answers; what matters is that it is a trade and not a free improvement.

The word covered describes a delivery mechanic. It is not a synonym for safe, hedged, or protected.

Key terms

Covered call: A short call written against shares already held, so the delivery obligation can be met without acquiring shares.
Naked (uncovered) short call: A short call with no shares held against it. The delivery obligation would require acquiring shares at whatever price prevails.
Opportunity cost: Value given up rather than lost. In a covered position it is the appreciation above the strike that goes to the call holder.

Worked example

What covering did and did not do

100 shares held at $50, one $55 call written for $1.50.

Stock at $70 at expiry: Shares delivered at $55
Stock at $50 at expiry: Call lapses
Stock at $25 at expiry: Loss of $2,500 on shares
Downside protection provided by the call: $1.50 per share
Upside forgone in the $70 case: $1,500

The premium covered 3 percent of a 50 percent decline and gave up $1,500 of gain. Covered solved the delivery problem and nothing else.

Check yourself

You hold 100 shares at $50 and write a $55 call for $1.50. The stock falls to $25. How much did the covered structure protect you?

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Educational only. Nothing in this lesson is investment, legal or tax advice, or a recommendation to enter into any transaction. Figures are illustrative and computed from the inputs stated in the lesson.