Johnson & Johnson posted earnings of $1.54 a share. Higher profits stemmed from strong sales growth in its prescription drugs segment, which soared 11% over the quarter.
The world's largest spirits maker Diageo has made a $1.9 billion play to take control of India's United Spirits, its second attempt to assume control of the company.
Google has purchased drone company Titan Aerospace. The move is part of Google's push to spread Internet access around the world, especially to underdeveloped regions.
Coca-Cola's earnings came to 44 cents a share, excluding items, while revenue fell 4% to $10.58 billion, narrowly beating analyst estimates of revenue of $10.55 billion.
Johnson & Johnson reported first-quarter profit that rose 34% on demand for new drugs, while Coca-Cola reported better-than-expected quarterly revenue on strong sales out of China.
Amazon is reportedly preparing to launch a smartphone according to a report from The Wall Street Journal over the weekend.
Excluding items, Citigroup reported adjusted earnings of $1.30 a share on revenue of about $20.1 billion, beating analysts' estimates of earnings of $1.14 a share on revenue of about $19.3 billion.
Stocks opened higher open on Monday, buoyed by better-than-expected earnings from Citigroup, while retail sales jumped 1.1% in March, surpassing economists' expectations.
RealMoney Pro contributor Chris Versace says on the economic front, he'll be watching retail sales, housing starts and industrial production.
Google announced it will hold a one-day sale for Glass on April 15, marking the first time the wearable device will be available to anyone outside of the 10,000 developers, contest winners and those selected to try out the device, called Explorers.