All five of the top players in the single-family mortgage servicing business reported slight de-clines in their portfolios during the second quarter, according to an exclusive Inside Mortgage Finance ranking and market analysis. As a group, the top five participants reported $3.661 trillion in mortgage servicing at the end of June, an 0.7 percent decline from the previous quarter. Although the Federal Reserve’s official tally of home mortgage debt outstanding ... [Includes two data charts]