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Stocks tumble on tech selloff, Trump concerns

The Dow tumbling over 400 points, with the tech-heavy the Nasdaq shedding over 2%—its worst day in six weeks. Plus, Facebook is under threat. We’ll explain why the latest revelation of data misuse could be an existential crisis. And Uber’s self driving plans have been shelved following a serious accident. We analyze the fallout. Plus a look ahead to everything you need to know about tomorrow, today. Catch The Final Round at 3:55 ET p.m. with Myles Udland and Yahoo Finance Editor-in-Chief Andy Serwer.

Winners and losers

Stocks in the red include Tesla as Goldman expects current quarter ‘deliveries to disappoint;’ Micro Focus as the British software company’s CEO resigned as it cuts its annual revenue forecast; and Synaptics, with shares slipping as Bloomberg reports Apple is developing its own screens for future iPhones, a development that could hurt touchscreen makers like Synaptics.

Stocks in the green include Barclays as activist investor Sherborne Investors Management has acquired a 5.2% stake; Pieris Pharmaceuticals as Evercore ISI initiated coverage with an ‘outperform’ rating; and Orbotech, with shares surging as chip gear maker KLA-Tencor will buy Orbotech, which makes systems to fabricate printed circuit boards and chip devices, for $3.4 billion.