 Federal Home Loan Mortgage OTCMKTS:FMCC was downgraded by Zacks Investment Research from a hold rating to a sell rating in a report issued on Monday, Zacks.com reports. According to Zacks, Freddie Mac is a stockholder-owned corporation that supports homeownership and rental housing. Freddie Mac purchases single-family and multifamily residential mortgages and mortgage-related securities, which it ... 