European Commission President Ursula Von Der Leyen tells CNBC exclusively that an investigation into the origins of Coronavirus is needed, with the cooperation of China. President Trump has threatened Beijing with fresh tariffs and says he has seen evidence that links the outbreak to a laboratory in Wuhan. The Dow Jones ends April on a high – its best monthly performance since 1987 – driven by gains in energy stocks, despite the recent historic sell-offs in oil. Amazon shares sink as founder Jeff Bezos warns the retail giant could post a loss in the second quarter after dedicating $4bn to virus response measures. Apple beats first-quarter expectations but shares dip in after-hours trading after CEO Tim Cook refuses to provide guidance amid the pandemic.

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