Western Digital

CEO: Steve Milligan

Dec. 30, 2016: $67.95

March 31, 2017: $82.53

Change: +21.46%

In January storage technology developer Western Digital named former Hewlett Packard Enterprise executive Martin Fink to be the company's new chief technology officer. Fink had served as HPE's CTO and director of HP Labs. Fink succeeds CTO Steven Campbell, who left Western Digital.

For its fiscal 2017 second quarter (ended Dec. 30) Western Digital reported revenue of $4.89 billion, up 47 percent from $3.32 billion in the same period one year earlier. Some of that growth was attributed to the May acquisition of solid-state storage technology company SanDisk for $19 billion. For the second quarter Western Digital reported net income of $235 million, down more than 6 percent from $251 million one year before.