London (CNN Business) 1. Bank earnings: It's a big day for bank earnings. Goldman Sachs ( GS ), Citigroup ( C ) and M&T Bank ( MTB ) will all publish their results before the opening bell.

Goldman Sachs is under pressure to show that its trading arm withstood the tranquility in global financial markets that started 2019.

Meanwhile, investors will be nervously watching the consumer banks for signs that they're getting hurt by changes in US interest rates.

The earning season got off to a strong start last week, withrevealing record profit and sales on Friday. Even troubledsaid its revenues fell less than feared.

France'sis buying data marketing agency Epsilon for $4.4 billion in cash, the company said Sunday.

Google GOOGL Facebook FB The deal could help Publicis compete with digital advertising giantsand

Arthur Sadoun the CEO of Publicis, said the agency's clients are facing higher consumer expectations and new data regulations.

"The only response is to deliver personalized experiences at scale," he said.

Shares in Publicis surged 4% in Paris. The deal is expected to close in the third quarter.

3. Trump goes after the Fed: President Donald Trump has once again criticized the Federal Reserve, saying its policies have been a "killer" for economic growth and stocks.

Trump tweeted Sunday that "if the Fed had done its job properly, which it has not, the Stock Market would have been up 5000 to 10,000 additional points."

He added that GDP growth would have been "well over 4% instead of 3%" if the central bank had refrained from rolling back stimulus.

Trump's comments come amid opposition to his two picks for the Federal Reserve Board of Governors — former presidential candidate Herman Cain and economic commentator Stephen Moore.

European Central Bank President Mario Draghi expressed worries over the weekend about the independence of central banks.

"If the central bank is not independent then people may well think that monetary policy decisions follow political advice rather than objective assessment of the economic outlook," Draghi said, according to Reuters.

5. Earnings and economics: Aphria APHA will release earnings before the open.