An auction house spokesperson says Companies House figures do not represent full scope of business

Sotheby's, which is the new owner of the Madison Avenue building, “will proudly act as stewards” of Charles Simonds’s tiny installation

The auction house’s 2021 sale helped lend legitimacy to the line of cartoon apes, the plaintiffs claim, and was “misleading promotion”

The Canadian superstar revealed himself as the Crown Ring's new owner in an Instagram story

Klingender’s body was found in the sea after an apparent boating accident

As a show at the Monnaie de Paris explores how money and creativity have been intertwined since the early 19th century, Sotheby’s is set to move into the Whitney’s former home

The £39.4m auction was led by a 15th-century painting by the Master of the Baroncelli Portraits at £7.9m, while a new record was set for a work by William Hogarth—albeit sold to a single bid

The night's star lot made up nearly half of the £190.3m total for Sotheby's Modern and contemporary evening auction

The artist's spin painting of musician Pete Townshend will be sold for charity at Sotheby's

Lady with a Fan (1917) was last sold for $11.6m in 1994 and will be offered at Sotheby's in London on 27 June

Plus imposing heads by Giacometti

The auction house expects to move into the Madison Avenue building in 2025, vacating its current York Avenue headquarters

Specialists at Christie’s and Sotheby’s dismissed concerns about a decline in the Old Masters market

A double-header night of The Now and contemporary art auctions set ten new artist records, boosting confidence after a lacklustre Christie's sale of the Gerald Fineberg collection

The price for the Codex Sassoon surpassed the sum Bill Gates paid for a Leonardo da Vinci codex in 1994

The firm’s Modern art evening sale and single-owner Mo Ostin auction brought in a below-estimate hammer total of $363.9m, or $427m with fees

Demand for ultra contemporary works may have eased but there is little sign of a sales slump, say the New York firms

"Transformational" signed 1660 copy of The Declaration of Breda leads mixed-category sale featuring manuscripts, royal portraits, medals and memorabilia

Looted by the Nazis, after the war it was returned to the Rothschild family

Questions resurface over New York museum’s rationale for consigning works by the artist to auction

More than 1,500 lots, including original lyrics and Victorian paintings, from the rockstar’s London home will be sold in September by former girlfriend and close friend Mary Austin

The painting is estimated to sell for around $45m next month at Sotheby's

The ten-foot-tall metal arachnid is being sold by a Brazilian foundation and could reset several auction records

'El Gran Espectaculo (The Nile)' and 'Now’s the Time' are estimated to sell for $45m at Christie’s and $30m at Sotheby’s, respectively

Plus, dramatic scenes from the Iliad and a delicate Modigliani head

And a surprise: Vincent’s brother Theo helped sell two paintings by the Delft master

Four works recently returned to heirs of the influential French dealer Ambroise Vollard will go under the hammer in New York next month

Results from the recent auction season, where young, “red-chip” artists surpassed expectations, while big names of Modern art went unsold, point to a shift in how collectors think

The Mo Ostin sale at Sotheby's will feature works by Magritte and Twombly

Shortening art market cycles and the politics around "flipping" artworks are leading collectors to conduct business away from public scrutiny