Interest rate worries have stopped some investors in mortgage-backed securities in their tracks.

"Mortgages have had a difficult couple of weeks, but it's not unique to mortgages," said Arthur Q. Frank, director of fixed-income research at Nomura Securities International.

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.