the British pop star, muse, libertine and old soul who inspired and helped write some of the Rolling Stones' greatest songs, died at 78 on Thursday in London. (Jan. 31) JPMorgan CEO Jamie Dimon ...

The target this time was JPMorgan, one of the industry's best derivatives trading outfits and a firm that until recently had been shielded from the buy-side poaching war that afflicted rivals.