Benzinga's Volume Movers

Sirona Dental Systems

shares moved up 2.93% to $74.89. The volume of Sirona Dental shares traded was 527% higher than normal. Sirona Dental will replace Health Management Associates

in the S&P MidCap 400 after the closing bell on January 28. Caterpillar

shares rose 5.38% to $90.81. The volume of Caterpillar shares traded was 451% higher than normal. Caterpillar reported upbeat Q4 results. Rayonier

shares climbed 8.43% to $44.65. The volume of Rayonier shares traded was 414% higher than normal. Rayonier reported Q4 results and announced its plans to separate into two public companies. LiveDeal

surged 12.75% to $23.88. The volume of LiveDeal shares traded was 372% higher than normal. LiveDeal shares have jumped 522.94% over the past 52 weeks, while the S&P 500 index has gained 19.34% in the same period.