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5 Biggest Market Caps As % of S&P500
Posted By Barry Ritholtz On January 20, 2013 @ 11:30 am In Index/ETFs,Valuation | Comments Disabled
Why cheap Apple shares can’t gain any traction
click for larger graphic
Source: Barron’s 
The chart above shows the 5 largest market cap firms as a percentage of the S&P500 index.
Barron’s  points out that when companies hit 5% of the S&P500, it often acts as a cap on further valuation growth. The Trader column points out that “General Electric (GE) and ExxonMobil (XOM) neared the 5% level in the third quarter of 2000 and the first quarter of 2009, respectively, before dropping back. IBM (IBM) got as high as 6% at the end of 1985. That preceded a long down period in terms of its percentage of the S&P’s market value.”
Despite a P/E below 15, when “Apple’s price was $700, its market value was almost 5% of the S&P 500′s.” The reason?
“Investors, particularly professionals, diversify their portfolios, and few are willing to commit more than 6%-7% of their portfolios to one stock, Cohen [Aaron Cohen, president of money manager Financial Partners Capital Management] says. Not everyone can own Apple, and at a certain point, “there was nobody left to buy the stock” who didn’t already have a full position, he adds.”
Hence, argues Barron’s, the difficulty in AAPL powering higher . . .
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URL to article: http://www.ritholtz.com/blog/2013/01/5-biggest-market-caps-as-of-sp500/
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 Image: http://www.ritholtz.com/blog/wp-content/uploads/2013/01/market-cap-percent-spx1.png
 Barron’s: http://online.barrons.com/article/SB50001424052748703596604578235762819811322.html
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