Stocks were mixed in the middle of the Fed, Brexit uncertainties

Market participants continued to digest the Fed's latest monetary policy move. The US central bank on Wednesday dropped any plans to raise interest rates this year, citing a slowdown in economic activity, and announced it would end the decline in its balance sheet in September.

In other news from the central bank, the Bank of England also kept its rates unchanged on Thursday and said its economic outlook "would continue to depend significantly" on "the nature and timing" of Brexit .

The European Union agreed to postpone the UK's withdrawal date from the UK, but said the length of the delay would depend on Parliament's approval next weekend of the 39, agreement of the Prime Minister, Theresa May

Another new policy, Chinese President Xi Jinping arrived Thursday in Rome where he has to sign an agreement with the government that provides for the accession of Italy to Beijing's "Belts and Roads" infrastructure plan . This decision would make Italy the first G7 country to support this initiative, much to the dismay of the United States and the EU.

In terms of business, Deutsche Bank has to publish its annual report. The bank recently made headlines in merger negotiations with its German competitor Commerzbank.

In terms of data, German, French and euro area manufacturing and services PMI figures are expected to be released on Friday morning.