(FORTUNE Magazine) – Biggest -- Oil companies once again spewed money, but so did banks and GE.

HIGHEST PROFITS

20 BIGGEST LOSSES

Fastest -- The easiest way to boost revenues? Make a big acquisition, like Mittal.

INCREASE IN REVENUE

INCREASE IN PROFITS**

Leanest -- The top performers were banks on opposite sides of the world.

RETURN ON REVENUE

RETURN ON ASSETS

*Also lost money in 2003. †For the 38 companies with 2004 losses.

**Excludes companies that lost money in 2003.