Benzinga's Volume Movers (SVNT, TWGP, YHOO, VOLC)

Savient Pharmaceuticals Inc SVNT shares moved up 28.66% to $18.99 at 12:43 pm. The volume of SVNT shares traded was 3100% higher than normal. Savient's drug, Krystexxa, for gout treatment, got approval from the US Food and Drug Administration. Tower Group Inc TWGP shares rose 5.66% to $22.78. The volume of TWGP shares traded was 2706% higher than normal. TWGP has announced the pricing of $135 million private offering of 5% Convertible Senior Notes due 2014. Yahoo! Inc YHOO shares climbed 4.55% to $14.25. The volume of YHOO shares traded was 489% higher than normal. Yahoo has refused to sell its 39% stake in the Alibaba Group. Volcano Corporation VOLC shares gained 2.28% to $23.78. The volume of VOLC shares traded was 362% higher than normal. VOLC has announced the pricing of $100 million 2.875% convertible senior notes due 2015. Read more from Benzinga's Company news.