At another level, the breakup was a reminder of something else: the perils of personality-driven investing, a growing and lucrative business for the Wall Street bankers cranking out, rapid-fire, a never-ending array of new financial products.

By Saeed Azhar, Kanchana Chakravarty and Sukriti Gupta NEW YORK (Reuters) - Wall Street's stock indexes ended lower on Thursday in choppy trade as a slump in Tesla shares offset news of progress in tariff talks between U.

The world’s richest man could lose billions in his fight with world’s most powerful politician. The feud between Elon Musk and Donald Trump could mean Tesla’s plans for self-driving cars hit a roadblock,