Assets Benchmarked to the S&P 500 Reach $4.91 Trillion; $1.32 Trillion Now Directly Invested: Financial News - Yahoo! Finance:
"With $4.91 trillion benchmarked to it and $1.32 trillion directly invested, the S&P 500 continues to reign as the world's most followed and influential stock market index. According to Standard & Poor's Annual Survey of Indexed Assets for 2006, the amount of assets directly invested in all of Standard & Poor's indices now exceeds $1.53 trillion, including $106 billion invested in the S&P MidCap 400 and S&P SmallCap 600. Assets invested in Standard & Poor's family of global indices climbed 13.8% over the previous year."