Symantec

CEO: Greg Clark

Dec. 30, 2016: $23.89

March 31, 2017: $30.68

Change: +28.42%

Symantec has been through some turbulent times, including selling off its Veritas storage technology business in 2015 and buying security software developer Blue Coat Systems for $4.65 billion last August – the latter resulting in changes in Symantec's top executive ranks.

The changes appear to have given Symantec new momentum. Adding to that was the February acquisition of Lifelock, the provider of identity-theft protection and remediation services, for $2.3 billion.

Also in February Symantec reported that revenue in its fiscal third quarter (ended Dec. 30) increased 14 percent to $1.04 billion from $909 million one year earlier. The company also forecast 20 percent to 23 percent growth for its fourth quarter. But net income for the quarter dropped to $46 million from $170 million one year earlier.