When Sotheby’s and Christie’s Diverged in Contemporary Evening Sales May 15, 2014 by Marion Maneker ArtTactic has a convenient chart to see where the two auction houses began to diverge in the crucial Contemporary Art category. It all began in 2010 but accelerated in 2013. More from Art Market MonitorKnoedler, Dedalus, Flam, Freedman, Elderfield All Embarrassed By Forgery InvestigationOld Master Dealer Agnew’s Looks for Value in Archives103,000 Reasons to Buy ArtArad's Creative Piracy SolutionSotheby’s Australian Art Makes A$11.26mChristie’s London Old Master Eve = £23.85m