Intel

CEO: Brian Krzanich

Dec. 30, 2016: $36.30

June 30, 2017: $33.74

Change: -7.05%

Stagnant PC sales have meant slower revenue growth for Intel in recent years given its dependence on selling processors for that market. The company has struggled to compete in the market for chips for mobile devices, but it has been growing its sales of processors for data center systems, the Internet of Things market, artificial intelligence and other emerging areas.

On March 13 the company unveiled a blockbuster deal to acquire Mobileye, a manufacturer of chip-based camera systems for connected cars, for $15.3 billion.

In April Intel completed the spinoff of its security business, now an independent security software company that carries the same McAfee name it did when Intel acquired it in 2010. The deal was valued at $4.2 billion.