Top 20 ETF Mkt Cap Portfolio PSDS Scan 12-31-2011

When the covariance of these 20 ETF funds is used to compute the STD and PSR for each of the 1000 portfolios in the scan the cloud of points shifts to the right indicating they are strongly correlated. That was my expectation. However, the change in the Correlation Chart for the 1000 portfolios was a bit more interesting.