NEW YORK ( Thestreet ) -- Commodity prices have been sinking.
So far this year, iShares Silver (SLV) has lost 22.8%, while Teucrium Wheat (WEAT) has dropped 12.1%. Wary investors have been dumping some commodities ETFs. SPDR Gold Shares (GLD) alone has recorded outflows of $10 billion this year, according to IndexUniverse.com.
Can commodities bounce back soon? Maybe not. Oil and gold have declined partly because of sluggish demand from China and other emerging markets. Unless the global economy improves, prices could remain soft.
But there are still good reasons to consider holding commodities ETFs. Commodities can provide diversification, sometimes rising when stocks are falling. A sudden event -- such as war in the Mideast -- could push up oil prices and send commodity funds through the roof.It can also make sense to own commodities for protection against inflation. In periods of rising prices, commodities have often outdone other assets. For the moment, inflation remains subdued. But economists worry that money printing by the Federal Reserve could push up prices eventually.
To add commodities to your portfolio, consider broad-basket ETFs. Those hold a mix of different commodities. Morningstar analyst Abby Woodham recommends PowerShares DB Commodity Index (DBC). Despite the sinking markets of recent months, PowerShares has reported inflows of $355 million this year. Part of what has attracted cash is the fund's unusually broad diversification. While many broad-basket ETFs emphasize energy, PowerShares holds sizable stakes in a variety of commodities, including silver, zinc, and sugar. "The diversification makes the fund less volatile," says Morningstar's Woodham. The holdings outside energy have cushioned the PowerShares fund this year. While most kinds of commodities have fallen, agricultural products such as soybeans have suffered only small declines. For the year, the PowerShares fund has lost 6.7%. Tracking a Deutsche Bank diversified index, the PowerShares portfolio has 55% of assets in energy, 22% in metals, and 22% in agriculture products. The approach is different from the strategy of iShares S&P GSCI Commodity (GSG), a competing broad-based ETF that has 70% of assets in energy. The S&P GSCI benchmark has a big energy stake because each commodity is weighted according to its total production. Because of its massive world production figures, oil accounts for 48% of assets in the index, while gold is 3.1%. In contrast, the Deutsche Bank index used by PowerShares has 25% in oil and 8% in gold. The Deutsch Bank weightings are derived by a system that uses a combination of production and total trading activity in the futures markets. Even though not much gold is produced, precious metals have a bigger weighting in the benchmark because they are responsible for considerable trading.
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