Benzinga's Volume Movers

surged 18.16 percent to $25.31. The volume of Yelp shares traded was 545 percent higher than normal. Yelp reported better-than-expected results for its first quarter and raised its revenue forecast for the year.

shares climbed 7.57 percent to $37.96. The volume of Ubiquiti Networks shares traded was 457 percent higher than normal. Ubiquiti Networks reported upbeat Q3 results.

shares moved up 22.31 percent to $17.84. The volume of Sierra Wireless traded was 438 percent higher than normal. Sierra Wireless reported better-than-expected Q1 results.

shares rose 16.57 percent to $33.69. The volume of Synchronoss Technologies shares traded was 352 percent higher than normal. Synchronoss Technologies reported strong Q1 earnings.