Warren Buffett's $BRK.B holdings:

$AAPL - 36% 
$BAC - 12% 
$KO - 10%
$AXP - 8%
$WFC - 7%
$KHC - 5%
$MCO - 3%
$JPM - 3%
$USB - 3% 

Believe it or not, that's 87% of the portfolio 

(The only one that interests me is $MCO)