As New York’s November auction season shifts into overdrive, all manner of high-profile sellers are taking advantage of one of the hottest art markets ever. As has now been widely reported, Hollywood mogul David Geffen has sold Jackson Pollock’s No. 5, 1948, for some $140 million to David Martinez, 48, the Mexico-born founder of the London-based Fintech Advisory Ltd. The price is said to be the highest ever for a contemporary painting. The sale was reportedly brokered by Sotheby’s auctioneer Tobias Meyer.