This is what you need to know on Friday:

1. European markets follow Asia down Friday as Amazon's (AMZN) disappointing earnings weigh down the tech sector.

2. The dollar has halted a rebound after the Senate rejected a so-called 'skinny' repeal of Obamacare in the early hours of Friday morning.

3. BT Group plc's (BT) fell in the first minutes of trading Friday after it reported profit fell by 42% in its first quarter as the company deals with the fallout from an accounting scandal in its Italian unit.

4. Barclays plc (BCS)  Friday reported a heavy loss in the first half after the disposal of its Africa unit.

5. U.S. futures are pointing to a negative opening. Dow Jones futures were down 0.19% at 06:45 BST and S&P 500 futures had lost 0.31%.

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