Significant Stock Movements: Microsoft, Palantir Rise; Bristol-Myers, Kohl's Fall

Key market shifts driven by new AI venture, regulatory delay, convertible notes offering, and major resignations.

• Microsoft Corp. hired ex-OpenAI CEO Sam Altman for a new AI venture, leading to a rise in its stock price.
• Bristol-Myers Squibb Co. faces a delay for a U.S. regulatory decision on a potential cancer treatment, causing a decrease in its stock price.
• Uber Technologies Inc. announced a $1.2 billion offering of convertible senior notes, resulting in a rise in its stock price.
• Kyle Vogt resigned as head of General Motors Co.’s autonomous vehicle unit Cruise, but the company's stock price still rose.
• Palantir Technologies Inc. was reportedly awarded a contract with the British National Health Service, leading to a rise in its stock price.

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