We show that product differentiation reduces the informativeness of a firm's stock price (or its peers' stock prices) about the value of its growth opportunities. This results in less efficient exercise of a firm's growth options when managers rely on information in stock prices for their...

We show how product variety affects asset prices in a general-equilibrium model. We analytically characterize the unique equilibrium and estimate the model to match asset pricing and product market moments. The equity premium and risk-free rate can be reconciled for risk aversion levels around 4...