Carl Icahn this week released his annual letter to unitholders of Icahn Enterprises. One thing that struck me was the table in which he compares the performance of Icahn Enterprises, L.P. with that of the S & P 500 Index, the NASDAQ Composite Index, the Russell 2000 Index, and the Dow Jones Industrials. He also compares his own company's performance with that of three other individual companies. One is Berkshire Hathaway, Warren Buffett's company. He doesn't explain why he chose the other two (which, disclosure, I own some shares of), but it struck me as interesting that he did choose them, because they seem to be the yardsticks against which he's measuring his own performance.