Unisys Corp.'s (UIS) third-quarter profit soared as the information technology company generated strong revenue from its systems integration and outsourcing services.

Shares jumped 20% to $24.03 after hours on the sharply better-than-expected results. The stock had been off 35% over the past 12 months through the close.

Unisys has sold convertible shares this year to help fund debt buybacks, which has pressured its stock but prompted Fitch Ratings to lift the company's credit ratings a notch in June.