On the call side, Biosante Pharmaceuticals (NASDAQ:BPAX) calls are trading over 20 times their average volume one investor made a major bullish bet on the company. Archer Daniels Midland (NYSE:ADM) calls are trading at 7 times their average volume after Warren Buffett said ADM is the "Kind of Company We Look At" for takeovers. Western Digital (NYSE:WDC) calls are also very active today, trading around 5 times their normal volume after the company was upgraded by analysts. Lincoln National (NYSE:LNC) calls are also very active today, trading at just under 5 times their average amount. Finally, Sanofi Aventis (NYSE:SNY) calls close out the list at over 4.5 times their normal volume after the company was upgraded by analysts.Taking a look at the put side of the ledger, Agilent Technologies (NYSE:A) puts are currently trading over 6.5 times their average volume after several analysts bet bearishly on the company. Yum Brands (NYSE:YUM) puts are trading over 6 times their average volume after the company was downgraded by analysts. Lender Processing Services (NYSE:LPS) puts are also very active today, trading just under 6 times their average volume. Saks Fifth Avenue (NYSE:SKS) puts are also very active today, trading at 5.5 times their average amount despite a strong retail sales report this week. Finally, Motorola Mobility (NYSE:MMI) puts close out the list at 5.3 times their average amount.