Forbes family hold sale of 38 Victorian pictures
Brothers raise cash with a few pictures from their extensive collection
Steve Cohen, billionaire hedge fund manager, is lending works to US and UK museums
This change of stance has attracted controversy
Forbes Russia focuses on top collectors
Including banking billionaire Pyotr Aven
The rich list: More than 100 people join global list of billionaires
Many are major art collectors and philanthropists
José Berardo is on the verge of signing an agreement to show his art in Lisbon
The billionaire's collection features Frida Kahlo, Francis Bacon and Dan Flavin, among others
The Forbes rich list: More billionaires than ever before
And many of them are huge art collectors
We delved into the Forbes list of billionaire collectors and discovered that the great majority go for 20th-century and contemporary art
Of the 497 billionaires, 36 are major collectors
How should billionaire Ronald Lauder be understood; philanthropist, restitution advocate, leader or naive temporiser?
The heir to the cosmetics fortune is creating his own museum and would like to see art returned to Holocaust victims, but how effective is he actually?