Jay Z is now the 100% owner of Ace Of Spades champagne. Before he was just a minority investor in the champagne's company Armand de Brignac. It was owned by a corporation named Sovereign Brands.
Here is the official statement from Sovereign Brands...
“We are proud to announce that Sovereign Brands, a New York-based wine and spirits company owned by the Berish family, has sold its interest in the Armand de Brignac (‘Ace of Spades’) Champagne brand to a new company led by the globally renowned Shawn ‘Jay Z’ Carter.
We have had a wonderful relationship with Jay-Z throughout the years since he first discovered Armand de Brignac. He became interested in owning the brand and made us an offer we simply couldn’t refuse"