This paper examines changes in property-liability insurers' risk-taking around enactments of state guaranty fund laws. Our evidence suggests that the risk of insurers' asset portfolios increases following enactments. But this increase in risk is significant only for stock insurers. Our evidence...

We examine asset pricing models with time-varying betas. In the framework of the conditional Arbitrage Pricing Theory (APT), we show that if the betas are time-varying, the conditional probability distribution of returns depends on the conditional probability distribution od betas. We prove that...