Tobin’s Q stands at 0.87, as calculated from the latest Flow of Funds Report. The Q ratio is a tool to value the broad market but I don’t like to use it as definitive tool as to whether or not the stock market is over or under-valued. I prefer to use the Q ratio as a measure of risk versus reward. What type of real returns can I expect from the stock market if I put my money to work today?
Tobin’s Q
Using the Federal Reserve’s Flow of Funds Report for quarterly updates on James Tobin’s famous Q ratio.

S&P 500 Real Returns and Tobin’s Q
by Glenn Busch December 16, 2011The recent third quarter Flow of Funds report allowed us to update Tobin’s Q. The ratio created by James Tobin and championed by Stephen Wright and Andrew Smithers came in at 0.82. A Lower reading than the previous quarter but still above fair value. Using Professor Robert Shiller’s data I can overlay annualized total real returns for the S&P 500 with Tobin’s Q. The first chart is 10 year annualized total real returns for the S&P 500 and Tobin’s Q.