U.S. one-hundred dollar banknotes are arranged for a photograph in Hong Kong on April 15, 2019.

The dollar gained ground on Friday and measured its biggest weekly gain since early April as investors worried about a slowing economic recovery, rising coronavirus infections in Europe, uncertainty about U.S. stimulus, and the upcoming elections here.

While orders for key U.S. capital goods increased more than expected in August, orders for durable goods - ranging from toasters to aircraft that are meant to last three years or more - rose 0.4% in August after jumping 11.7% in July.