2 Commodity ETFs to Help Diversify Portfolios
Diversified commodity ETFs can play a useful role as portfolio diversifiers, but the driver is not just broad commodity exposure. Their appeal comes from how commodity prices often respond differently than stocks and bonds over a market cycle. That said, the diversification benefit is strongest when the fund spreads exposure across multiple commodity groups rather than leaning too heavily on one theme such as energy or precious metals.
Investors should also think about the mechanics underneath the ticker. Commodity ETFs commonly gain exposure through futures, which means performance can be shaped by the term structure of those contracts, not only by spot prices. In periods when futures markets are expensive to roll, the fund may face a drag that can matter over time even if the underlying commodities are moving in the expected direction.
Fund structure can matter as much as portfolio construction. Differences in active versus index management, expense ratios, and tax reporting can change the investor experience in a material way. A lower-cost structure may help reduce friction, while simpler tax treatment may improve usability for taxable investors who want commodity exposure as part of a long-term asset-allocation framework.
For portfolio planning, commodities are usually best viewed as a satellite allocation rather than a core growth engine. Their main value is in diversification, inflation sensitivity, and improving the mix of return drivers. That makes fund selection less about chasing the โbestโ commodity and more about choosing the implementation that fits the investorโs time horizon, trading tolerance, and broader portfolio role.
PDBC
PDBC is the largest commodity ETF available to investors, according to ETF Database. The commodity ETF has $4.3 billion in assets under management as of September 6. The fund is actively managed and provides exposure to the worldโs most heavily traded commodities. The fundโs largest commodity allocations as of August 30 are gasoline (13.14%), Brent crude (12.83%), WTI crude (12.69%), NY Harbor ULSD (11.90%), and gold (10.44%). The fund also has exposure to copper, wheat, zinc, soybeans, aluminum, sugar, corn, natural gas, and silver.DBC
DBC is the third-largest commodity ETF by assets under management, with $1.4 billion. The fund tracks the DBIQ Optimum Yield Diversified Commodity Index. The commodity ETFโs underlying index provides exposure to 14 heavily traded commodities across the energy, precious metals, industrial metals, and agriculture sectors. DBCโs has exposure to the same commodities as PDBC, with slightly different weights. As of August 30, DBCโs five largest exposures by weight include gasoline (12.60%), Brent crude (12.46%), WTI crude (12.29%), NY Harbor ULSD (11.73%), and gold (10.89%).Differences Between the Commodity ETFs
An important difference between the two commodity ETFs is that DBC issues a schedule K-1. Thus, investors might prefer PDBC to get exposure to commodity futures without the tax hassle of a K-1. The funds also have different costs. PDBC charges 59 basis points and DBC charges 87 basis points.Enjoyed this article? Sign up for our newsletter to receive regular insights and stay connected.
