Fair, Isaac & Co.'s announcement last week that it would form two business units to serve companies in electronic commerce and telecommunications landed with a thud.

The stock price of the San Rafael, Calif., company, best known for software that rates people's creditworthiness, closed Friday at $36.9375, down $9.4375 from a week earlier and from a high of $54.5625 on Jan. 27.

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.