Stocks regain ground as bond investors get to grips with historic losses.

Stocks jumped on Friday as global markets were poised to end the week with a gain, a relatively rare development during a tumultuous time for Wall Street.

The S&P 500 rose more than 2 percent in early trading, building on a 1 percent gain the day before. The index is poised to record only its second weekly gain in the past 12 weeks.

Stocks turned markedly higher after a University of Michigan survey of consumers found that inflation…