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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallSPY and USO represent very different investments: SPY holds large U.S. companies and seeks to track the S&P 500, while USO is a commodity-pool security whose results are linked to oil futures—not ownership of crude oil. Compare them by the exposure you want, your time horizon, your tolerance for loss, and the costs and risks of each structure. Neither fund is suitable for every investor, and this comparison is not a recommendation to buy either one.
What exposure does each fund provide?
| Feature | SPY | USO |
|---|---|---|
| Structure and objective | An exchange-traded fund seeking, before fees and expenses, to correspond generally to the S&P 500. | A commodity-pool security seeking changes in net asset value tied to Cushing light sweet crude, as measured by its benchmark oil futures contract, plus collateral interest and less expenses. |
| Primary exposure | Stocks in the S&P 500, an index designed to measure the large-cap segment of the U.S. equity market and weighted by float-adjusted market capitalization. | Primarily oil futures; USCF may use swaps, forwards, or other oil-related investments in specified circumstances. |
| What an investor owns | Shares of a fund holding constituent stocks. | Shares of a fund holding futures and potentially other oil-related instruments—not barrels of crude and not a direct investment in the benchmark futures contract. |
SPY’s objective and portfolio are described by State Street Investment Management. USO’s objective and structure are described by USCF Investments and in its SEC-filed prospectus materials.
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Why does USO’s return differ from the spot price of oil?
USO’s futures exposure has to be maintained as contracts approach expiration. Its described benchmark moves from a near-month NYMEX contract to the next-month contract during a five-day roll period. That process makes the shape of the oil futures curve important, so a move in crude prices alone does not tell you how USO will perform.
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Contango and backwardation
- Contango: Later-dated futures cost more than nearer-dated ones. USCF says contango can significantly harm returns over time unless offset by favorable oil-price movements.
- Backwardation: Later-dated futures cost less than nearer-dated ones. USCF says this can have the opposite tendency.
USCF says that, beginning January 1, 2026, USO would seek to rebalance specified positions across each day of a five-day roll period. Roll dates are projected and may change without notice; check the USO document library for current details. USCF’s warning is explicit: “AN INVESTMENT IN USO SHOULD NOT BE VIEWED AS AN INVESTMENT IN THE BENCHMARK OIL FUTURES CONTRACT OR LIGHT SWEET CRUDE OIL.”
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What risks should you compare?
SPY: equity-market and concentration risks
SPY can fall when the U.S. equity market declines. Owning a broad index fund does not eliminate market risk or guarantee a positive return. Its SEC prospectus also identifies transaction costs associated with portfolio turnover. Information technology was a significant investment in SPY as of December 31, 2025, so broad index exposure should not be mistaken for equal exposure to every sector.
See the SPY fund information and risk disclosures and the SEC-filed prospectus.
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USO: futures, roll, and commodity-pool risks
USO’s returns reflect futures exposure and the costs and effects of maintaining it, not simply the daily or long-term change in a quoted spot-oil price. Futures-market conditions, roll mechanics, collateral interest, expenses, and the value of any other permitted oil-related investments can all matter. Review USCF’s disclosures and current offering documents to understand the risks of the structure.
How do fees, trading costs, liquidity, and income compare?
Fund expenses are only one component of ownership cost. Investors may also face brokerage charges, bid-ask spreads, and the effect of a market price that differs from a fund’s net asset value. Compare these using current figures for the same date and trading conditions; those measures change.
State Street’s fact sheet dated June 30, 2026 reported SPY’s gross and net expense ratios as 0.0945%, 504 holdings, and a 0.96% 30-day SEC yield. These are dated snapshots, not forecasts or a complete measure of total ownership cost. The cited USCF overview does not state a usable current USO expense ratio, so a current fee comparison requires checking USO’s latest prospectus or fact sheet rather than assuming a value.
The 30-day SEC yield is a standardized yield measure, not a promised return. Do not treat it as directly comparable to an expected return from USO’s futures strategy. Check current distribution information and fund documents for each product if income is part of your comparison.
How should you compare performance?
Use the same start and end dates and comparable total-return measures, accounting for reinvested distributions where applicable. Do not compare SPY’s index performance with USO’s share-price return as if they were the same statistic. A performance window can illustrate what happened over that period, but it cannot forecast future results; no matched SPY-versus-USO total-return figure is established here.
- Choose a common measurement period and consistent return basis.
- Distinguish fund returns from index returns and from spot-oil price changes.
- Include distributions and fees where the data allow, and note the measurement date.
- Consider the market conditions during the period, especially the oil futures curve for USO.
Which questions should guide your decision?
- What exposure do you intend to add? SPY is U.S. large-cap equity exposure; USO is a futures-based oil strategy.
- What is your time horizon? USO’s futures rolls and the shape of the curve can materially affect results over time. SPY has equity-market risk and can also lose value over any holding period.
- Can you tolerate the relevant losses? Compare a broad stock-market decline with commodity-futures volatility and roll-related effects; neither exposure removes the risk of loss.
- Have you checked current fund data? Verify the latest prospectuses, expense figures, holdings or exposures, yield and distributions, market price versus NAV, bid-ask spread, and—for USO—the projected roll schedule.
State Street’s fund disclosure advises: “Before investing in a fund, consider its investment objectives, risks, charges, and expenses.” Read each product’s current official documents and assess whether its mandate, structure, and risks match your own investment plan.
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