Although Freddie Mac and Fannie Mae are reviewing recently originated mortgages more closely than they have in the past, the bulk of the whopping $13.21 billion in mortgage repurchases reported by the two government-sponsored enterprises during the first quarter came from loans originated years ago. A new Inside Mortgage Trends analysis of repurchase activity reported by the two GSEs in Securities and Exchange Commission filings shows that 80.0 percent of the buybacks recorded in ... [Includes two data charts]