Palo Alto Networks

CEO: Mark McLaughlin

Dec. 30, 2016: $125.05

March 31, 2017: $112.88

Change: -9.89%

In late February Palo Alto Networks disclosed that it had acquired LightCyber and its behavioral attack detection technology for $105 million.

Also in late February the company, after announcing sales for its fiscal second quarter that fell short of expectations, said it was retooling its sales strategy to address "go-to-market execution issues."

For the quarter ended Jan. 31, Palo Alto Networks reported sales of $422.6 million. While that was up 26 percent year over year, it was more than $7 million short of financial analysts' expectations. The company also reported a $60.6 million loss for the quarter compared with a $57.3 million loss in the same quarter one year earlier.