Quicken Loans subsequently moved its mortgage servicing group into the top four floors .
In March 2013 , Rock Ventures , the umbrella company of Dan Gilbert 's business including Quicken Loans , announced its purchase of the building .
Quicken Loans subsequently moved Quicken Loans ' mortgage servicing group into the top four floors .
In March 2013 , Rock Ventures , the umbrella company of Dan Gilbert 's business including Quicken Loans , announced its purchase of the building .