According to TMZ, Madonna bought the 17,000-square-foot Beverly Hills property for $12 million while she was still married to Guy Ritchie in 2003.
Sources told the gossip site that a "Wall Street big shot" purchased the private estate, which includes a 500-foot driveway, nine bedrooms, a two-story dining room, pool, movie theater and tennis court.
There's also an art studio, bar and gym.
According to the Los Angeles Times, Madonna first listed the "tastefully decorated" property for $28 million last year. It hit the Multiple Listing Service for $22.5 earlier this year.