Gilead's net profit nearly tripled and revenue was more than $1 billion ahead of estimates, thanks to sales of a key Hepatitis C drug.
Mobile telecom gear maker Ericsson posted sales and first-quarter operating profit below expectations but said recent contracts won by the group would lift sales.
Facebook reports its first-quarter earnings Wednesday. Details to look out for include mobile ad prices and engagement, as Recode reports.
McDonald's reported a lower quarterly profit as sales at the fast-food chain's established U.S. restaurants fell more than expected.
Get the best of CNBC in your inbox