On Saturday, China's central bank announced to "enhance ... flexibility" in the yuan's exchange rate, though it also ruled out a one-time revaluation and said any strengthening of its currency would be gradual. See full story on China's yuan move.

The euro  (CUR_EURUSD 1.2381, -0.0055, -0.4423%) changed hands at $1.2378, up from $1.2365 in late North American trading Friday.

The Australian dollar  (CUR_AUDUSD 0.8764, -0.0048, -0.5447%) was buying 87.55 U.S. cents, up 0.7%.

The dollar index  (DXY 85.58, -0.12, -0.14%) , which measures the greenback against a trade-weighted basket of six major currencies, slipped to 85.521, from 85.704 late Friday.

Against the Japanese yen, the dollar  (CUR_USDYEN 90.7100, +0.3500, +0.3873%) edged up to ¥90.92, from ¥90.76 late Friday.

On Friday, the euro ended its strongest week against the dollar since September, notching a small decline as traders reassessed the need for the relative safe-haven of the dollar after a huge run-up in the last several weeks. See Friday's Currencies report.

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