The return of top-to-bottom corporate integration holds big implications for everything from power politics to consumer choice.

JPMorgan Chase posts 43.9% annual gain, fueled by loan demand and high rates, but faces expense growth and asset quality ...

Chevron’s stock price rose closed down around 1 percent on Friday. Exxon’s stock fell 3.5 percent. Their dispute was rooted in the fine print of a contract that has never been made public.

But merely because Chevron, with a market cap of $256.7 billion, is an industry leader -- it's one of the largest energy companies based on market cap, in fact -- doesn't mean that it's a definite ...