482 F.3d 991 Sherwin I. RAY, et al., Plaintiffs-Appellants,v.CITIGROUP GLOBAL MARKETS, INC., et al., Defendants-Appellees. No. 05-4362. United States Court of Appeals, Seventh Circuit. Argued September 7, 2006. Decided April 12, 2007. Steven S. Biss (argued), Johnson & Bell, Catherine M. Chapman, Baum, Sigman, Auerbach, Neuman & Katsaros, Chicago, IL, for Plaintiffs-Appellants. Ellen S. Robbins, […]