Wall Street Wrap-Up: AI Disrupts Markets, Rivian Surges, and a Potential Government Shutdown Looms

Market-Moving Headlines - AlgoRhythm Holdings Inc. announced that its AI platform could significantly increase freight volume without additional headcount, leading to a sell-off in the logistics sector, with the Russell 3000 Trucking Index dropping by 6.6% [2][9] - Concerns about AI's disruptive potential have been heightened, with UBS warning that credit markets are underpricing the risks associated with AI-driven disruption, particularly affecting leveraged loans [3] Rivian's Positive Outlook - Rivian Automotive Inc. reported a fourth-quarter adjusted loss of 54 cents per share, which was better than analyst expectations, and surpassed revenue forecasts [4] - The company provided a strong delivery guidance for 2026, estimating 62,000 to 67,000 vehicles, and confirmed that its R2 SUV is on track for a second-quarter launch [4] Tech and Finance Giants Make Moves - NVIDIA Corp. plans to lease a new 200-megawatt data center in Nevada, partially financed by a $3.8 billion junk-bond sale led by Tract Capital, with JPMorgan Chase & Co. and Morgan Stanley managing the transaction [5] - Citigroup Inc. announced a 22% pay increase for CEO Jane Fraser, raising her 2025 compensation to $42 million, following a 66% surge in the bank's stock price [6][9] Political and Economic Headwinds - A partial shutdown of the Department of Homeland Security is looming as Senate Democrats blocked a funding bill over immigration agent restrictions, with a deadline approaching [10] Financial Troubles in Retail - Saks Fifth Avenue is negotiating with lenders and suppliers to address financial concerns related to inventory on consignment and to prevent objections to its bankruptcy loan [11]