The actively managed NBCM, which celebrates its third birthday in ETF form this week, is also outpacing the S&P 500 this year. That confirms the benefits of counting gold and silver as components in its diversified basket. NBCM can hold as many as 51 commodities from eight groups. But at the end of the second quarter, precious metals was the ETF's largest sector exposure, according to issuer data. It's a smart move and one accentuated by a 17.7% allocation to gold, more than double the ETF's second-largest ...