Chicago Options Associates (COA) is a finance company in Chicago, Illinois which specializes in trading options and futures contracts. It was founded in 1987 by Oliver R. W. Pergams and Michael E. Davis. In 1994 Davis was its chief executive officer, hiring then-graduate student Jimmy Wales as research director; Wales served in this position until 1998.The company and Davis were the subject of litigation resulting from a 2007 Illinois Supreme Court decision. In Dowling v.