The scramble for commodity-related exchange traded funds (ETFs) is in full swing. Precious metal ETFs are enticing investors as a way to hedge against possible dollar and inflationary worries, but the CFTC could change how these funds look in the coming months.

In the short-term, the fourth quarter could be volatile for gold prices, and some analysts believe gold will be vulnerable to pullbacks if the dollar appreciates or liquidation occurs, writes Melinda Peer for Forbes. But physically-backed ETFs, such as the SPDR Gold Shares (NYSEArca: GLD), are currently picking up on weaker dollar expectations.

ETF Securities is expanding its physically-backed investment products and recently launched ETFS SIVER TRUST (NYSEArca: SIVR) and ETFS GOLD TRUST (NYSEArca: SGOL). Both funds are 100% backed by the physical assets held in London and Switzerland, respectively.

Meanwhile, potential regulations coming forth from the Commodity Futures Trading Commission (CFTC) has some funds doing a little shuffling.

PowerShares is restructuring its funds in an attempt to take advantage of loopholes to meet the “safety position limits,” remarks Don Dion for TheStreet. The ETFs PowerShares DB Agriculture (NYSEArca: DBA) and PowerShares DB Commodity Index Tracking (NYSEArca: DBC) will reduce positions in corn and wheat futures by the end of October.

DBA and DBC invest in commodities futures to achieve their intended tracking strategies. In addition to reducing their current positions, DB will take positions in coffee, cocoa, live cattle, copper, natural gas and gasoline. This will allow the fund to continue to operate within limits.

DBC will start investing in oil futures contract traded in Europe – a loophole that allows the fund to reduce U.S. oil holdings while adding foreign holdings.

Managers of United States Natural Gas (NYSEArca: UNG) have already cut back on natural gas futures contracts listed in the United States in favor of swaps elsewhere.

The CFTC has noted its intent on increasing position limits placed on future-based commodity ETFs. ETF managers have already stoped creation of new shares, shut down funds and restructured underlying investment strategies.

For more information on commodities, visit our commodity category.

Max Chen contributed to this article.

Tags: Agriculture, Commodity ETFs, DBA, DBC, Energy, GLD, Gold, Natural Gas, Precious Metals, SGOL, Silver, SIVR, UNG