CA Grands Crus has sold a majority shareholding in Chateau de Rayne Vigneau in Sauternes to the Tresor du Patrimoine group. Chateau de Rayne Vigneau was classified as a first growth in the 1855 classification. The estate has 84 hectares of vines planted with 74% Semillon, 24% Sauvignon Blanc and 2% Muscadelle, and an anuual production of between 40,000 and 120,000 bottles. The estate was acquired by CA Grands Crus, a subsidiary of French bank Credit Agricole, in 2004. CA Grands Crus also owns Chateau Grand Puy Ducasse, the fifth growth estate in Pauillac, Chateau Meyney in Saint-Estèphe and Chateau Blaignan in the Médoc.

The Tresor du Patrimoine Group was founded in 1990 by Derek Remy Smith and specialises in mail order and online sales of a variety of products ranging from coins, clothes and gadgets to regional foods and wines. In 2013 the group acquired Traditions du Perigord and Vignobles Lalande-Moreau and already sells seven million bottles of wines to its customer base of more than five million people.