Sales of agency mortgage servicing rights were up in the second quarter, mostly as a result of heavier coissuance volume, according to an exclusive new Inside Mortgage Trends analysis and ranking. Servicing rights on $129.57 billion of agency mortgages changed hands during the second quarter, up 6.4 percent from the first three months of the year. The data are culled on Fannie Mae, Freddie Mac and Ginnie Mae mortgage-backed securities ... [Includes three data charts]