PowerShares DB U.S. Dollar Index Bullish ( UUP ), measuring the greenback against a basket of major foreign currencies, shed 0.3% to 21.91. As usual the gold bulls and bears butted heads over whether Thursday's action marks the beginning of a new uptrend or just a dead-cat bounce in a long-term downtrend. He has put 5% to 8% of his clients' assets in metals and natural resources as a hedge against inflation that he believes will arise from central banks around the world printing money to stimulate their economies.