Here's what you need to know before Monday's opening bell:

-Trump Eases Trade War Worries

In a tweet on Sunday, Trump said: "President Xi and I will always be friends, no matter what happens with our dispute on trade. China will take down its Trade Barriers because it is the right thing to do. Taxes will become Reciprocal & a deal will be made on Intellectual Property. Great future for both countries!"

-Deutsche Bank (DB - Get Report) AG, Germany's largest lender, Ousts CEO John Cryan after three straight years of losses totaling more than $10 billion and an ongoing erosion of market share in its once-dominant investment banking and trading unit.

-Novartis International (NVS - Get Report) ADR said it would buy AveXis (AVXS in an $8.7 billion deal to expand its gene therapy and neuroscience capabilities

-Facebook (FB - Get Report) will begin sending notices to the 87 million users who may have had their data shared with Cambridge Analytica.

Most of the affected users - more than 70 million - are located in the U.S.

In addition, all 2.2 billion Facebook users will receive a notice titled " Protecting Your Information" with a link to see what apps they use and what information they have shared with those apps, the Associated Press reported. If they want, users can shut off apps individually or turn off third-party access to their apps completely.
-Patrick Reed won the 82nd Masters Championship, his first major title beating fellow young guns Ricky Fowler and Jordan Spieth.

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