This version corrected the spelling of the last name of JMP Securities' Alex Gauna.
This version corrected that Caterpillar stock rose in premarket trading.
This article has been updated to reflect that 17 percent of Novozymes' sales were in its bioenergy division, in the first quarter of 2014.
This story has been updated to reflect that Novartis' animal health division will be sold for around $5.4 billion.
This story has been updated to reflect the correct courtroom for Chatwal's appearance.
This story has been updated with the correct spelling for singer Kanye West.
This story has been updated with Peter Sullivan's correct first name
Yahoo reported first-quarter revenue of $1.09 billion. This article was corrected to reflect that fact.
An earlier version of this story misidentified the shale formation nearest to Oklahoma. It has been corrected.
This story has been corrected to reflect that the drop in March new home sales was 83 percent from a year earlier