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Also: Expensive stocks, a Medicare warning and another milestone for Nvidia.

JPMorgan Chase chief executive will help shape the economy while remaining at the helm of the largest U.S. bank, a source told MarketWatch.

Car shoppers who have held off on buying a vehicle due to affordability concerns are unlikely to see relief if President-elect Donald Trump imposes the new tariffs he proposed during his campaign.

Prosecutors say the ring smuggled thousands of illegal devices that let diesel-truck drivers belch hundreds of times more pollution than allowed by law.

Moving can work out well financially, but there may be hidden costs.

The Dow’s strong gain this year favored the Democrats and Kamala Harris. But Wall Street is increasingly disconnected from Main Street.

Tesla Inc.’s market valuation hit $1 trillion on Friday, after a post-election rally lifted the electric-vehicle maker’s stock by more than 25% on hopes the incoming Trump administration could benefit the company while hampering its EV competitors.

Elon Musk has become a close ally of President-elect Donald Trump, but is that enough to bring retail investors back to Tesla?

Wall Street investors are bracing for a battle over Trump policies and plans that risk ballooning the U.S. debt load.

The S&P 500 on Friday was trading above 6,000 for the first time in history after Donald Trump’s election and the Federal Reserve’s interest-rate cut lifted the large-cap benchmark index to a fresh record. 

Bill Ackman on Friday said he will ask the board of Pershing Square Holdings Ltd. to delist from the Amsterdam stock exchange, following riots there that targeted Israeli soccer fans.

A mixed quarter for the EV maker translated into more caution on Wall Street, which also mulled over the implications of the future Trump administration.