Thanks to Andrew for passing this along.
In 1999, he bought Munch’s Madonna for $11 million. In 2004, he bought Hirst’s The Physical Impossibility of Death in the Mind of Someone Living for $8 million. In 2006, he bought a Pollock for $52 million. In 2006, he bought de Kooning’s Woman III for $137 million. In 2007, he bought Warhol’s Turquoise Marilyn for $80 million. In 2010, he bought a Johns Flag for $110 million. There have been works by Bacon and Richter and Picasso and Koons. Probably only he knows how much he has spent. Someone on the internet estimates it at $700 million.