In this issue (.pdf): Toward Bubble Clarity: An American Economic Review article by Jianjun Miao and Pengfei Wang purports to “provide a theory of rational stock price bubbles.” Here, Tomohiro Hirano and Alexis Akira Toda argue that Miao and Wang’s ‘bubble’ talk is inapt. It is more appropriate to interpret their model as one of multiple fundamental equilibria, where all equilibrium asset prices are equal to the present discounted value of dividends. (Miao and Wang are hereby invite...
