Freddie Mac looks like it’s continuing to work to take back market share and is laying the groundwork this year to take its mortgage-backed securities to another level on several fronts. Of particular note is Freddie’s intention to securitize more ARMs, interest-only loans and affordable housing-related products. In a recent mortgage securities update, Freddie Mac said it has regained market share, enhanced existing programs and rolled out new products in an increasingly competitive business. “Through…