A blockbuster deal to manufacture Tesla’s artificial-intelligence chips had Samsung stock jumping early Monday.

Tesla's market cap fell below $1 trillion, but it still reflects investors' assumptions of enormous future growth.

Bloomberg journalists discuss today's biggest winners and losers in the stock market. Listen for analysis on the companies making news on Wall Street.

Tesla is a story stock, as investors are always believing in Elon Musk's grand vision. Based on the valuation, which is not even remotely rooted in the reality of the business today, the market sees Tesla succeeding with its goal of launching a global robo-taxi platform. Musk thinks this service could see "quasi-infinite" demand.

Tesla rises after President Donald Trump says he struck a deal to set 15% tariffs on goods from the European Union, including automobiles.

The EV maker reported a 16% drop in quarterly net income and said c

An 11-figure deal with a prominent electronics company was the acceleration Tesla (NASDAQ: TSLA) needed for a stock price pop on Monday. The electric vehicle (EV) maker's shares were up by almost 4% in value in late-session trading, contrasting quite favorably with the slight (0.2%) decline of the S&P 500 (SNPINDEX: ^GSPC) at that stage.

Tesla shares are falling after CEO Elon Musk warned of “a few rough quarters” as the company shifts focus to offering a self-driving taxi service.

Explore Tesla, Inc.'s growth in robotaxis & robotics despite Q2 revenue dips. Click for my updated look at TSLA stock post earnings.

Shares of Tesla (NASDAQ: TSLA) climbed higher on Monday. The electric vehicle (EV) maker's stock gained 3% as of market close, but had jumped as much as 4.6% earlier in the day. The spike comes as the S&P 500 (SNPINDEX: ^GSPC) was flat and the Nasdaq Composite (NASDAQINDEX: ^IXIC) rose 0.3%.