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Money

Shares of the giant tech companies tumbled on Monday, pushing major stock market indexes into negative territory for November and leaving investors clinging to a gain of less than 1 percent for the year. Apple, Amazon, Facebook and Microsoft were all down by more than 3 percent shortly after midday, as investors digested a series…

Technology

Needing Growth, Uber Returns to Germany. This Time on Best Behavior.

DÜSSELDORF, Germany — Guido Goebel stopped driving for Uber three years ago when the company abandoned his hometown, the German city of Düsseldorf, after a battle with regulators. Several weeks ago, the ride-hailing service reached out to him again. Uber told Mr. Goebel that it was returning to Düsseldorf and offered him a bonus of…

Facebook Fallout Ruptures Democrats’ Longtime Alliance With Silicon Valley

The alliance between Democrats and Silicon Valley has buckled and bent this year amid revelations that platforms like Facebook and Twitter allowed hateful speech, Russian propaganda and conservative-leaning “fake news” to flourish. But those tensions burst into open warfare this past week after revelations that Facebook executives had withheld evidence of Russian activity on the…

The Saturday Profile: From Encyclopedic Collector to ‘Wikipedian-at-Large’

AUCKLAND, New Zealand — In the grand library of the Auckland War Memorial Museum on a Saturday morning in August, a small group of new and slightly nervous Wikipedia editors gathered for a day of training that would arm them to tackle New Zealand’s lackluster representation on the crowdsourced online encyclopedia. Leading the so-called Wikiblitz…

Google Cloud Executive Who Sought Pentagon Contract Steps Down

SAN FRANCISCO — Diane Greene, whose pursuit of Pentagon contracts for artificial intelligence technology sparked a worker uprising at Google, is stepping down as chief executive of the company’s cloud computing business. Ms. Greene said she would stay on as chief executive until January. She will be replaced by Thomas Kurian, who oversaw product development…