Dan Duray

Kounellis rides into town but the horses stay in New York

Seven major works on show by Greek artist who has become a major figure in the Arte Povera movement

Mayor Gallery sues over Agnes Martin

Catalogues raisonnés emerge as the latest front in the battle to authenticate works and secure market value

President Trump: the knowns and unknowns

First reactions to property tycoon’s election to the White House and what it could mean for the arts

New York sales defy fears of downturn

Fewer trophy works this season, but solid totals and record prices for several artists

Cuban artists react to Fidel Castro’s death

Anti-Castro artist and human rights activist El Sexto believed to have been abducted amid crackdown

Rubells put 400 outstanding new works on display as they prepare to move home

Ambitious send-off is also gallery's first recent acquisitions show

Top 10 shows during Art Basel in Miami Beach

Our pick of what to see at museums and private collections, including Bayrle, Kounnelis, a Kiefer double bill

Ames collection helps Sotheby’s bring strong result in contemporary art auction

Young star Njideka Akunyili Crosby’s work fetches more than $1m, ten times previous record

Phillips on an upswing with $111.2m 20th-century art sale

The hammer total was below estimate, but met the auction house’s modest expectations for “a contracted market”

De Kooning painting sells for record $66m at Christie’s New York

Post-war and contemporary evening auction sees several big sales but still falls short of last year’s total

Sotheby’s reports $54.5m in losses in third quarter

Continuing slump is tempered by online sales in the low and middle market, and a look to greater China for future growth

US election casts a shadow over art market

To what extent could national unease affect the autumn auctions?

Lawnews

Judge cites New York law protecting art buyers in lawsuit against Zwirner Gallery

Case centres on an editioned Gazing Ball sculpture by Jeff Koons

Would Clinton or Trump be better for the arts?

We examine the two presidential candidates’ arts policies—or lack of them

Ai Weiwei returns to New York with four solo gallery shows

The Chinese activist-artist, who lived in the city during the 1980s, comes back with new tree sculptures and an installation of cast-off clothing from refugee camps

Collector and lawyer Peter Hort can pay, will pay artists

RISBE aims to ensure that artists and galleries are paid promptly

Lawsuit shows difficulties of authentication and repair

Case between collector and dealer over a sculpture damaged in transit becomes a legal saga