Billionaire collector and industrialist William “Bill” Koch is once again preparing to part with a significant portion of his world-class art holdings. Following a series of high-profile auctions over the past two years that have seen him divest millions of dollars in fine art, rare wine, and real estate, the 85-year-old collector is now consigning a new group of marquee paintings to Christie’s. The upcoming November sales in New York will feature museum-grade masterpieces by iconic artists such as Claude Monet, Paul Cézanne, Henri Matisse, Edgar Degas, Joan Miró, and Diego Rivera, with individual highlights expected to fetch up to $18 million.
According to announcements from Christie’s, this carefully curated selection of European and Latin American art is anticipated to bring in more than $40 million during the auction house’s major autumn marquee sales next month. This latest consignment reinforces what has become an increasingly active and lucrative partnership between Koch and the renowned auction house, encompassing multiple major categories of his extensive personal collections.
The upcoming November event follows a remarkably successful run of sales for the billionaire. In June 2025, Christie’s managed the high-profile auction of $28.8 million worth of fine wine from the extensive cellar of William I. Koch. Just seven months later, in January of the following year, Koch parted ways with an impressive $84 million worth of American art, also through Christie’s. According to representatives for the auction house, both of these major sales significantly exceeded their initial pre-sale expectations, demonstrating robust demand for works originating from Koch’s meticulously assembled collections.
Beyond his fine art and rare wine divestments, Koch has also made headlines with his real estate holdings. He previously placed Elk Mountain Lodge, his sprawling 52-acre estate located in Aspen, Colorado, on the market. Initially listed in January 2025 with an ambitious asking price of $125 million, the property ultimately failed to find a traditional buyer at that figure. Consequently, Koch slashed the asking price to $99 million and transitioned the sale to a public auction format in July. The grand Aspen property, which Koch originally acquired for $26.5 million back in 2007, features a massive 16,631-square-foot main house accompanied by seven distinct guest cabins and a comprehensive suite of luxury amenities designed to offer ultimate privacy and comfort.
While the precise underlying motivations behind Koch’s sustained wave of liquidations remain unconfirmed by representatives, the sheer scale of the divestments is striking. In a span of under two years, the octogenarian collector has parted with more than $112 million in fine art and wine assets, with the prospect of another $40 million or more joining that total following next month’s marquee auctions. Although observers frequently interpret such large-scale sales as a form of comprehensive estate planning or portfolio restructuring, Christie’s has not offered an official explanation for the timing. Koch himself has not publicly linked the ongoing sales to any broader life changes, though he did offer insight into his philosophy and motivations through an official statement released by the auction house.
"I feel very fortunate that with hard work, business success, and a great deal of luck, I have been able to collect things that resonate with me," Koch said in the statement. He added that the masterpieces included in the upcoming sale rank among his personal favorites, expressing his underlying wish for the future of the works: "My hope is that art lovers around the world can take the same enjoyment as I have, in collecting these works my hope is that collectors will find something that speaks to their passion and that they are able to share it with their friends and loved ones."
For this upcoming auction cycle, Koch is pivoting away from the Americana that dominated his January sale, training his discerning eye instead on classic European and Latin American masterpieces. Leading the charge at the high end of the market are two exceptional works that carry identical pre-sale estimates of $12 million to $18 million. Both paintings are scheduled to cross the block during Christie’s prestigious 20th Century Evening Sale in New York.
The first of these joint headliners is Claude Monet’s Champ d’avoine et coquelicots, painted in 1890. This vibrant landscape captures a sunlit field of oats and wild red poppies near the legendary artist’s beloved home and gardens in Giverny, France. Koch originally acquired the painting nearly four decades ago in 1985, cementing his early appreciation for the French Impressionist master.
Sharing top billing in the evening sale is Paul Cézanne’s Tasse, verre et fruits, a quintessential still life executed around 1877. The painting presents a carefully composed tabletop arrangement featuring ripe apples, a ceramic cup, and a delicate glass, showcasing Cézanne’s revolutionary approach to volume, geometry, and color. Koch added this foundational Post-Impressionist work to his collection in 1986, and like the Monet landscape, it carries an independent pre-sale estimate of $12 million to $18 million.
The auction will also feature several other high-value European modernists. Among them is Henri Matisse’s Jeune femme fardée à l’orientale (La bayadère), a striking 1929 canvas depicting a reclining nude figure whose imagery and exoticism were directly inspired by the classical ballet La Bayadère. This sophisticated Matisse work enters the market with a pre-sale estimate ranging between $5 million and $7 million.
Another notable historical highlight is Edgar Degas’s pastel over monotype work titled Scène de ballet, which carries an estimated value of $3 million to $5 million. This particular piece possesses a rich and documented provenance, having been originally acquired directly from the artist’s studio by Philadelphia collector Annie Riddle Scott. Notably, the acquisition was made upon the expert advice and encouragement of fellow Impressionist painter Mary Cassatt, adding a significant layer of art-historical pedigree to the lot. (Art historians note that another distinct impression of the underlying monotype technique used by Degas is currently housed in the permanent collection of the Clark Art Institute in Williamstown, Massachusetts.)
Koch’s diverse collecting tastes extend beyond European modernism into twentieth-century Latin American art and other international movements. His consignment features Diego Rivera’s vibrant 1929 painting Vendedora de flores en Xochimilco, alongside Joan Miró’s striking 1950 abstract work Peinture. Each of these significant pieces carries an estimated value between $2.5 million and $3.5 million. Further broadening the international scope of the offering is Marc Chagall’s 1971 composition Danseuse à la robe fleurie, which is estimated to bring between $1.2 million and $1.8 million, as well as Gabriele Münter’s 1909 expressionist painting Kind mit Puppe, carrying an expected price tag of $900,000 to $1.2 million.
As an industrialist, a victorious America’s Cup sailing team skipper, and a dedicated patron of the arts for decades, Koch has built an eclectic reputation as a collector whose interests spanned everything from historical artifacts and fine art to premier viticulture. The upcoming dispersed lots will find new homes through a series of specialized auctions, including Christie’s marquee 20th Century Evening Sale, the Impressionist and Modern Art Day Sale, and the Works on Paper Sale, all scheduled to take place during the bustling November auction week in New York City.
