Rudy Orman today stepped down as vice president of New York-based private equity firm Marathon Asset Management. "Next week I will be starting my new role as Director and Senior Vice President of Business Development at Residential Credit Solutions (RCS)," Orman said in an email today. RCS is a mortgage refinance and modification service based in Fort Worth, Texas. Marathon is a global alternative investment and asset management company with approximately $11bn in capital under management. Write to Jacob Gaffney.