On the call side, Tibco Software (NASDAQ:TIBX) calls are trading at 15.5 times their average volume as investors await their quarterly earnings report tomorrow morning. Medtronic (NYSE:MDT) calls are trading at 9.5 times their average volume despite news of an investigation by the Senate Finance Committee. Amylin Pharmaceuticals (NASDAQ:AMLN) calls are very active today, trading at close to 8 times their normal volume. Steel Dynamics (NASDAQ:STLD) calls are trading at 7.5 times their average amount as investors are bullish on the steel sector today. Finally, Dollar Thrifty Automotive (NYSE:DTG) calls close out the list at over 7 times their normal volume on news of a long-term deal with Expedia (NASDAQ:EXPE).Taking a look at the put side of the ledger, Campbell Soup Company (NYSE:CPB) puts are currently trading at close to 8 times their average volume after Goldman Sachs (NYSE:GS) suggested buying puts on the company head of their analyst event. RF Micro Devices (NASDAQ:RFMD) puts are trading at around 4.5 times their average volume after investors bet bearishly on the company. Adobe Systems (NASDAQ:ADBE) puts are trading at 4 times their average volume after their growth forecast failed to impress investors. FedEx (NYSE:FDX) puts are trading just under 4 times their average amount despite beating earnings expectations. Finally, ConAgra Foods (NYSE:CAG) puts close out the list at 3 times the average amount.