ARB is a $500 million international marketing and media research firm. The Company Tab averages just 15 option contracts traded a day while today 865 have traded. Further, 850 of the contracts were baby call purchases (Dec. 25 Calls) on the offer (0.10) in December (expiring in 4 days). The call purchase was opening (OI is 56). Random bet or information? Find out in 4 days. Details are on my blog: http://livevol.blogspot.com/2009/12/arbitron-arb-wanna-bet-on-arb.html