This paper asks whether market fundamentals can explain the recent run-up and decline of Japanese equity values and price-earnings ratios. Accounting differences explain about half of the long-run disparity between U.S. and Japanese P/Es. For example, if Japanese firms used U.S. accounting rules, the Japanese P/E ratio would have been 32.6, not 53.7, in 1989. Accounting differences cannot, however, explain the doubling of this ratio in 1986, nor its decline in 1990. Similarly, we are unable to isolate changes in required stock returns or growth expectations that are large enough to explain recent Japanese stock price movements.

We illustrate how equilibrium screening models can be used to evaluate the economic consequences of insurance market regulation. We calibrate and solve a model of the United Kingdom's compulsory annuity market and examine the impact of gender-based pricing restrictions. We find that the endogenous adjustment of annuity contract menus in response to such restrictions can undo up to half of the redistribution from men to women that would occur with exogenous Social Security-like annuity contracts. Our findings indicate the importance of endogenous contract responses and illustrate the feasibility of employing theoretical insurance market equilibrium models for quantitative policy analysis.