The secondary market for bulk agency mortgage servicing rights is beginning to pick up a decent head of steam, but one factor is holding it back from a full-throttle: worries about prepayment speeds. “We’ve had one month of low prepayment numbers,” said Mark Garland, president of MountainView Servicing Group, Denver. “A couple of more months would be better.” According to investment bankers who work the market, although rates have been on a steady climb since the November election – the yield on the benchmark 10-year Treasury is...