Conventional wisdom has it that Tobin's Q cannot help explain aggregate investment. However, the standard linearized present-value asset price decomposition suggests that it should be able to predict other variables, such as stock returns. Using a new data set for the UK, we find that Q has...

Theory tells us that output, the capital stock and the user cost of capital are related. From the capital accumulation identity, it also follows that the capital stock and investment have a long-run proportional relationship. The dynamic structure thus implies a multicointegrating framework, in...