In the fall of 1929, the market value of all shares listed on the New York Stock Exchange fell by 30 percent. Many analysts then and now take the view that stocks were then overvalued and the stock market was in need of a correction. Irving Fisher argued that the fundamentals were strong and the stock market was undervalued. In this paper, we estimate the fundamental value of corporate equity in 1929 using data on stocks of productive capital and tax rates as in McGrattan and Prescott (2000, 2001) and compare it to actual stock valuations. We find that the stock market in 1929 did.
