New York's spring auction week, starting May 18, 2026, saw record-breaking sales led by Christie's, which realized over $1.1 billion across two opening night sales. Major estate consignments from Condé Nast owner S.I. Newhouse, MoMA trustee Agnes Gund, dealer Marian Goodman, and financier Robert Mnuchin fueled the market, resulting in 17 new artist auction records.
Sotheby’s New York sold Mark Rothko’s painting *Brown and Blacks in Reds* (1957) for $85.8 million on Thursday, making it the second-highest price ever achieved for the artist at auction. The work, part of Rothko’s postwar Color Field series, was offered from the private collection of the late art dealer Robert Mnuchin, whose estate also included works by Willem de Kooning. The Mnuchin sale totaled $166.3 million, with de Kooning’s *Untitled* (1970) fetching $8.8 million and *Untitled XLII* (1983) reaching $10.2 million. Bidding lasted about four minutes, with the winning bid placed via phone with Helena Newman, chairman of Sotheby’s Europe.