Benzinga's Volume Movers

Barrett Business Services

shares climbed 16.08% to $21.22. The volume of Barrett Business Services shares traded was 1065% higher than normal. Barrett shares have dropped 78.73% over the past 52 weeks, while the S&P 500 index has gained 12.42% in the same period. Grand Canyon Education

shares moved up 14.81% to $49.62. The volume of Grand Canyon Education traded was 852% higher than normal. Grand Canyon Education reported upbeat Q3 earnings. The company announced that it will engage a financial advisor and will explore options including conversion to a nonprofit entity ABIOMED

shares rose 18.75% to $30.10. The volume of ABIOMED shares traded was 840% higher than normal. ABIOMED reported Q2 earnings of $0.09 per share on revenue of $51.9 million and raised the lower end of FY15 forecast. Visa

surged 9.21% to $234.42. The volume of Visa shares traded 567% higher than normal. Visa reported upbeat fiscal fourth-quarter earnings and unveiled a new $5 billion share buyback.