Principal Residential Mortgage shares at least one belief with its neighbor Norwest Mortgage: Scale is crucial.

The subsidiary of Principal Financial Group, Des Moines, bought ReliaStar Mortgage last month, boosting its servicing portfolio to $40 billion and putting it among the top 20 mortgage servicers.

Limited Time Offer

Save $400 off your subscription. Special offer ends April 30, 2017.

14-Day Free Trial

No credit card required. Complete access to articles, breaking news and industry data.