Evaluating consecutive covered calls across market regimes

What a covered-call overlay does

A covered-call overlay holds the underlying and sells a call, aiming to keep the premium when the asset is expected to drift sideways over the option's life. Covered-call writing is a two-legged overlay that keeps the underlying long and sells a call against it, collecting premium while capping upside if the asset is called away.

Relative to a buy-and-hold benchmark, the overlay is ahead only while price stays below strike plus received premium. A larger rally leaves it behind because the asset is called away. A sharp decline still produces a loss, because the long underlying remains in the book.

A repeatable income process

The archive framed successive short calls as one option income strategy: a repeatable entry, rollover, and expiry procedure that turns those calls into one testable income process rather than a one-off trade. Consecutive one-month and two-month at-the-money calls were rolled on a broad US equity index, using the third Friday as the rollover date. An at-the-money call is a sold call whose strike equals the spot price at the rollover date, used here as the primary income strike.

Call prices were reconstructed by feeding historically implied volatility into a Black-Scholes pricer, together with the index dividend yield and matching one- or two-month Treasury rates. The comparison omitted transaction fees.

At expiry, overlay profit equaled the premium compounded over the option's life when the index finished at or above strike. When the index finished below strike, that compounded premium was reduced by the absolute decline.

Read each window as a market regime

A market regime here is a sample window labeled bull, sideways, or bear from the size of the underlying move, so the overlay can be scored by context rather than by one all-period average. The buy-and-hold benchmark is an unoptioned long position in the same underlying, used to judge whether the overlay helped or hurt in a given window.

Whether the harvested premium is large enough

Option premium analysis is a check of whether the harvested call price is large enough, given tenor and moneyness, to offset the upside given up and the declines still borne by the long holding. Calls struck farther out of the money collected a premium that was too small, given that tenor and moneyness, to offset those two costs. The archive applied that check to both one-month and two-month tenors, with the at-the-money call as the primary income strike.