"We're seeing a reversal of what we saw in that first week and the dollar has been benefiting as a result," said Sireen Haraji, currency strategist at Mizuho Securities in New York. An initial recovery in crude oil prices helped wipe out early falls for the Norwegian crown and the Canadian, Australian and New Zealand dollars.
Investors remained cautious, however, despite a rebound in stocks. Attention remained fixed on the gyrations of China's yuan and a fall in oil prices to $30 a barrel. In mid-morning New York trading, the dollar was up 0.4 percent against a basket of currencies to 99.078. The euro, meanwhile, lost 0.1 percent versus the dollar to $1.0848, while the dollar was up slightly at 117.78 yen. Sterling fell more than 1 percent against the dollar to $1.4387, after the release of poor British manufacturing numbers.