The marketing literature refers to the concept of brand capital and pr
ovides empirical evidence that firms with a large stock of well-establ
ished brands have an advantage in introducing new products. This paper
develops a theory of brand extension as a mechanism for informational
leverage in which a firm leverages off a good's reputation in one mar
ket to alleviate the problem of informational asymmetry encountered in
other markets. It is shown that brand extension helps a multi-product
monopolist introduce a new experience good with less price distortion
. Thus, the paper provides a theoretical foundation for the concept of
brand capital.