The S&P and Dow close in the red after the Labour Day long weekend, with recovery concerns growing. Meanwhile big tech stocks push the Nasdaq to another record high. It’s a bumpy ride for Bitcoin after El Salvador's launch of the crypto as an official currency gets off to a rocky start amid protests and tech teething trouble. And German Chancellor Angela Merkel implores voters to back Armin Laschet in this month's election, as candidates make their pitch for the premiership, with her Conservatives lagging in the polls.

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