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Stocks Churn Amid Big Sector Swings; Qualcomm, UnitedHealth, Netflix, Union Pacific Are Key Weekly Movers

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Stocks Churn Amid Big Sector Swings; Qualcomm, UnitedHealth, Netflix, Union Pacific Are Key Weekly Movers

The stock market churned. A Qualcomm-Apple deal led chips. Medical stocks dived on UnitedHealth. Software names fell. Netflix subscriber guidance was light. Rail stocks rallied on earnings.