What Is CPER? United States Copper Index Fund

CPER is the United States Copper Index Fund, a commodity ETF that holds copper futures contracts instead of mining stocks. It tracks the SummerHaven Copper Index Total Return, which selects among COMEX copper futures of different maturities to follow the copper price while trying to limit the cost of rolling contracts.

Launched in November 2011 by United States Commodity Funds LLC, CPER is the main US-listed fund built purely around the copper price. It lets investors take a position on copper in a standard brokerage account without buying physical metal or choosing an individual miner.

Approximate weights as of mid-2026; refresh quarterly from United States Commodity Funds LLC (USCF)'s fund page. Each ticker links to its individual stock guide in Walnut.

CPER's exposure comes entirely from copper futures contracts traded on COMEX, spread across several maturities as directed by the SummerHaven index. The fund backs those positions with US Treasury bills and cash held as collateral, which is standard for a futures-based commodity fund.

There are no mining equities and no physical copper in the fund. This structure keeps CPER closely tied to the copper price, but it also means the fund's mechanics, including futures rolls and margin, differ from a typical stock ETF.

The main alternative to CPER is COPX, the Global X Copper Miners ETF, which owns shares of copper mining companies rather than futures. COPX tends to move more than the copper price because miner earnings are leveraged to copper, and it can pay small dividends and issues a standard 1099.

CPER, by contrast, follows the metal price more directly and does not depend on any single company's operations, but it issues a K-1 tax form and carries futures roll costs. Choosing between them comes down to whether you want the metal price or the miners.

CPER's performance closely mirrors the copper price, minus fees and roll costs. It has risen during periods of strong industrial demand and tight copper supply, and fallen when global growth slows or Chinese demand weakens. The SummerHaven maturity-selection approach aims to reduce roll drag relative to holding only front-month futures.

The long-run case for copper rests on electrification demand from EVs, grids, and data centers outpacing new mine supply. In the short term, copper is highly sensitive to the global economic cycle, so CPER can be volatile and is often used to express a timed view rather than a permanent allocation.

Walnut is not an investment adviser, and whether CPER suits you depends on your goals, time horizon, and comfort with commodity volatility and tax complexity. CPER is a single-commodity futures fund, so it is generally used tactically rather than as a core, buy-and-hold position.

It can fit investors who want exposure to the copper price itself, understand futures roll costs, and are comfortable receiving a K-1 tax form. Because it pays no income and can swing sharply, sizing it modestly within a diversified portfolio is a common approach.

As a futures-based fund, CPER faces risks that stock ETFs do not. Contracts expire and must be rolled forward, and when later-dated contracts are more expensive, the fund loses a little on each roll, a drag that can accumulate over long holding periods even if copper is flat.

CPER also typically issues a Schedule K-1 rather than a 1099, which adds tax paperwork and can complicate filing, especially in taxable accounts. Investors should weigh these structural costs against the benefit of clean, direct exposure to the copper price.

CPER trades on NYSE Arca and can be purchased through any US brokerage, including Robinhood, Fidelity, Schwab, and Public. Many brokers offer fractional shares, so you can start with a small dollar amount rather than a full share.

You can also connect your existing broker to Walnut to track CPER alongside your other positions and inside a commodity or electrification basket. Trades are executed at your broker, and Walnut serves as the tracking and intelligence layer. Consider the K-1 tax treatment before you buy.

ETFs are passive bundles; thematic baskets in Walnut let you concentrate within them. If you hold CPER as a core position, these are the themes you might layer on as satellites.

CPER is a fairly direct way to track the copper price without picking a miner, but it holds futures, so it carries roll costs and issues a K-1 tax form. At 0.88% it is expensive versus equity ETFs. Most investors use it tactically to express a short- to medium-term view on copper, not as a long-term core holding.

Whether CPER is worth buying today depends more on your time horizon and what you already hold than on any single call. We walk through valuation, concentration, and what would have to be true for it to outperform from here in is CPER a buy?

CPER yields None (no regular distributions; futures fund) as of mid-2026, paid by passing through the dividends of its underlying holdings. For the payout schedule, history, and how the distributions are taxed, see CPER dividend: yield and schedule.