On the call side, Teradata Corporation (NYSE:TDC) calls are trading over 17.5 times their average volume after several investors bet bullishly on the company. General Mills (NYSE:GIS) calls are trading over 8 times their average volume on news that the company completed its acquisition of Yoplait. New Gold (AMEX:NGD) calls are also very active today, trading at 5 times their normal volume. GameStop (NYSE:GME) calls are trading close to 4 times their average amount after the company was upgraded by analysts. Finally, Vivus (NASDAQ:VVS) calls close out the list at 3.4 times their normal volume on news that the company submitted a New Drug Application to the FDA.Taking a look at the put side of the ledger, VMWare (NYSE:VMW) puts are currently trading close to 7 times their average volume after several analysts bet bearishly on the company. Infosys Technologies (NASDAQ:INFY) puts are also very active today, trading over 6 times their average volume ahead of their upcoming quarterly earnings. Silvercorp Metals (NYSE:SVM) puts are trading at 4 times their average volume after several investors bet bearishly on the company. St. Joe (NYSE:JOE) puts are trading over 3.5 times their average amount on news of an SEC Probe. Finally, Regions Financial (NYSE:RF) puts close out the list at just over 3 times their average amount after Citigroup (NYSE:C) slashed their price targets on regional banks.