| | Dropbox Inc's shares closed at $28.42, up more than 35 percent in their first day of trading on Friday, as investors rushed to buy into the biggest technology initial public offering in more than a year even as the wider sector languished. | | | Verified Facebook pages of Elon Musk's rocket company SpaceX and electric carmaker Tesla Inc (TSLA.O) disappeared on Friday, minutes after the Silicon Valley billionaire promised on Twitter to take down the pages when challenged by users. | | | NEW YORK (Reuters) - Wall Street tumbled on Friday as investors, increasingly nervous about a potential U.S. trade war with China, shied away from risky bets going into the weekend as they looked for shelter from further declines. | | | BEIJING/SHANGHAI (Reuters) - China urged the United States on Friday to "pull back from the brink" as President Donald Trump's plans for tariffs on up to $60 billion in Chinese goods moved the world's two largest economies closer to a trade war. | | | LONDON (Reuters) - GlaxoSmithKline has quit the race to buy Pfizer's consumer healthcare business, endangering an auction the U.S. drugmaker hoped would bring in as much as $20 billion. | | | WASHINGTON (Reuters) - U.S. lawmakers on Friday formally asked Facebook Inc's Mark Zuckerberg to explain at a congressional hearing how 50 million users' data got into the hands of political consultancy Cambridge Analytica. | | | SAN DIEGO (Reuters) - Qualcomm Inc re-elected its board of directors on Friday with weak support from shareholders, who grilled the U.S. chipmaker over its strategy following its successful defense against a $117-billion hostile bid from Broadcom Ltd . | | | NEW YORK (Reuters) - Bank of America Corp will pay a $42 million fine and admitted wrongdoing to settle claims by New York's attorney general that it fraudulently routed clients' stock trades to outside firms, including one run by swindler Bernard Madoff. | | | (Reuters) - Spotify Technology SA said on Friday it uncovered 2 million users of its free service who had blocked advertising without paying, highlighting a potential revenue risk for the soon-to-be public company. | | | MONTREAL, OTTAWA (Reuters) - Canada on Friday welcomed as a "positive development" in its long ties with Boeing a decision by the U.S. planemaker to end a trade dispute over sales of Bombardier CSeries jets in the United States. | | | | |