Tuesday, January 11, 2011

Big stocks in the S&P 500

From my colleague, Craig Newmark, 10 stocks account for 1/5 of the S&P 500's market cap. This is actually the reason why the Dow 30 (30 stocks) does a pretty good job of tracking the much broader S&P 500.  Of course, in recent weeks, the Dow hasn't done so well.