Tech stocks drive indexes higher after an OpenAI share sale catapults the firm to the world’s most valuable startup at a $500 billion valuation. The US government shutdown enters its second day with the Trump administration planning to swiftly dismiss federal workers this week. Amy Wu Silverman of RBC Capital Markets discusses the potential market impact in case of a protracted government shutdown. “Bloomberg Brief” delivers the market news, data and analysis you need to set your agenda.

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