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- From: watanabe@cs.uiuc.edu (Larry Watanabe)
- Subject: Re: Index funds
- Message-ID: <C1H05o.65H@cs.uiuc.edu>
- Organization: University of Illinois, Dept. of Comp. Sci., Urbana, IL
- References: <185096@pyramid.pyramid.com> <C1Gy6r.94v@news.cso.uiuc.edu>
- Distribution: usa
- Date: Tue, 26 Jan 1993 16:51:23 GMT
- Lines: 27
-
- jhsu@eng-nxt03.cso.uiuc.edu (Jason Hsu) writes:
-
- >If the "efficient market hypothesis" is true, then why do most
- >institutions and mutual funds underperform the market with their stock
- >picks?
-
- The efficient market hypothesis simply states that the price of
- a stock quickly changes to discount information about future prospects.
- To the extent that it does this quickly, it is said to be efficient.
- "Quick" is a subjective term, but presumably it is in the order
- of minutes-hours, but not microseconds or weeks.
-
- Institutions could easily underperform the market by choosing
- the worst stocks. This has nothing to do with how fast
- those stocks go down in response to bad news, or how
- fast others go up in response to good news.
-
- They can also underperform the market because of the
- cost of transactions, and management fees.
-
- >Couldn't you beat the S&P 500 by buying the
- >less popular S&P 500 stocks?
-
- The least popular stocks in the S&P 500 could also be
- worst performing stocks.
-
- -Larry Watanabe watanabe@cs.uiuc.edu
-