Mike,
They do not get all invested in the last 1/2 hour of one trading day...this is from theStreet.com article for some perspective on the size....
Fidelity's new fund, only the eighth index fund in a lineup of 283 funds, represents no threat to the Vanguard Group, the unchallenged champion on index funds. Vanguard offers 24 index funds and controls 62% of the $287.2 billion index fund market, according to Financial Research Corp. of Boston. Fidelity is a distant second with a 9.6% market share
this is from the Russell.com site
The company, serving both institutional and individual investors, manages approximately US $50 billion for more than 600 clients in a dozen countries. Russell also is one of the world's largest consultants to retirement plans, advising clients in more than 30 countries on the investment of $1 trillion in assets. Russell serves the pension funds of some of the world's largest global corporations and offers a complete range of investment services for retirement plans, non-qualified plans, private investors and charitable trusts. In addition, Russell offers institutional brokerage services and portfolio transitions through its brokerage subsidiary.
..in other words the 450,000 shares trade up to 5 last week don't begin to reflect the amount of buying that will have to be done...I recall that one of the Vanguard small cap funds had about a 700,000 share position when ampex was last in the index....
Let's assume the average is 200,000 shares and there are 50 funds/or plans that replicate the russell 2000...that's 10 million shares...
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