Single-owner collections remain one of the clearest barometers of confidence in the global art market. In 2025, their resurgence played a decisive role in restoring momentum at the top end, lifting both total sales value and market share. Accounting for 24.2% of global auction turnover, it is the second-highest level of the past decade. Record sell-through rates and the concentration of value in major collections underscore that - when property with exceptional provenance comes to market, demand follows.

This report provides new data, trends and insights into the growing importance of Single Owner collection sales at Sotheby’s, Christie’s and Phillips over the last decade.

Inside, you’ll find:

• A closer look at the major collections
• Focus sections on auction location, white glvoe sales, and top collecting sectors
• New feature: Perspectives from the following industry professionals
  • Madeline Lissner (EVP, Global Fine Art and Major Collections at Sotheby’s)
  • Drew Watson (Managing Director, Head of Art Services at Bank of America)
  • Mari-Claudia Jiménez (Partner, Co-head of art law at Withers Art and Advisory)
  • Christian Levett (Collector & Founder of Femmes Artistes Musée Mougins)