Forbes’ annual ranking of the world’s wealthiest people reveals that personal fortunes may have taken a hit, but the same names stay at the top

Billionaire hedge-funder is believed to have bought works by De Kooning and Pollock in one of the biggest private sale in history

Senator examines tax-exempt status

Diplomatic thaw draws collectors and curators to the Caribbean island

Reports say city’s mayor will help to find site

The Danish-Vietnamese artist will no longer have to create a “large and impressive” work for Bert Kreuk

Feminist art activists plan “anti-billionaire” campaign to highlight discrimination, which kicks off in Minneapolis

Other important works bought by the Chinese taxi driver turned billionaire who snared Modigliani’s record-setting nude

Exhibition from the Sigg Collection of Chinese contemporary art coincides with show in Switzerland

The Russian arts patron credits her microbiologist mother for an interest in science and technology

At Tony Salamé’s $100m Aishti Foundation, visitors can see a major show of abstract works or shop in a string of luxury boutiques

Collector Gary Wasserman looks to the Motor City’s post-bankruptcy future with new interdisciplinary venue

The art in Los Angeles’ new private museum is as titanic as the funding

Summit in Sheffield asks how arts organisations can attract private patronage

Federico Cerruti died with a treasure-filled house in which he had slept only one night

But Venice exhibition is also full of political unrest and upheaval

The Maleki case exposes the perils of mixing business with friendship in the art world

City promises to clear any hurdles to allow Florida collector Bruce Berkowitz to share his art with the public

Clubbers’ paradise is turning into unlikely culture destination

David Roberts to show more ”live projects” in his Camden building—and may launch initiatives outside the capital

Collectors are learning to love wall drawings as a new generation of artists embraces them

Project space will host three-year series of exhibitions starting in September

Among who's who of leading collectors, many have established foundations