Countrywide Financial ranked as the top issuer of Alternative A MBS in 2005, bringing $71.68 billion of new securities to the market, a new Inside MBS & ABS ranking reveals. With Alt A MBS production hitting a record $332.32 billion last year, Countrywide remained the dominant issuer in the sector with a 21.6 percent market share. The California-based mortgage lender recorded a 187.1 percent jump in its Alt A MBS issuance in 2005, exceeding the… [One data table included]