With a click of a mouse, Thomas Marano can bypass what used to be a time-consuming paper chase, and rummage through the data on many of the loans backing mortgage-backed securities.

Mr. Marano, senior managing director of Bear, Stearns & Co.'s mortgage trading operation, credits the firm's high-tech approach with protecting profits in a tough year.

Subscribe Now

Access to authoritative analysis and perspective and our data-driven report series.

14-Day Free Trial

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