Who is madisonmadison international realty? Madison International Realty is a private equity firm that provides joint venture and preferred equity capital for real estate investors.Does madison realty own signa prime selection? July 24, 2019July 24, 2019 New York-based Madison International Realty has acquired a 5% stake in Signa Prime Selection. January 11, 2019February 5, 2019 IREI Reports: Madison International Realty acquires majority of the ground-level commercial assets in Norway.How many investors have invested in madison commercial real estate? Since inception, Madison has raised $5.4 billion in capital commitments from more than 150 institutional investors worldwide and has invested in more than 185 million square feet of privately owned commercial real estate with a gross asset value of $17.2 billion. Learn More.How much capital has madison real estate raised to date? Since inception, Madison has raised $5.4 billion in capital commitments from more than 150 institutional investors worldwide and has invested in more than 185 million square feet of privately owned commercial real estate with a gross asset value of $17.2 billion.