From ETF Database:

No corner of the ETF market has grown as quickly in recent years as exchange-traded commodities, as investors have embraced cheap and efficient exposure to an asset class that has historically been out-of-reach for all but the biggest and most sophisticated.

Perhaps due to the uncertain economic environment, precious metals funds have become particularly popular, offering a safe haven for those concerned about the strength of the current recovery. While some ETPs offer exposure to gold and silver through futures-backed funds, most investors prefer physically-backed ETFs that will generally move in lock step with spot commodity prices.

There is no shortage of ETF products utilizing this strategy...

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