Benzinga's Volume Movers

shares climbed 38.96 percent to $45.80. The volume of Bio-Reference Laboratories shares traded was 6229 percent higher than normal.

announced its plans to buy Bio-Reference Laboratories in a $1.5 billion deal.

surged 6.23 percent to $75.22. The volume of DISH Network shares traded 865 percent higher than normal. According to a Wall Street Journal report,

is in merger talks with DISH Network.

shares moved up 7.55 percent to $37.75. The volume of Five Below traded was 803 percent higher than normal. Five Below reported better-than-expected results for the first quarter and raised its FY15 forecast.

shares rose 4.75 percent to $40.12. The volume of T-Mobile US shares traded was 375 percent higher than normal. According to a Wall Street Journal report, T-Mobile US is in merger talks with DISH Network.