OILKvsUSOETF Comparison
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ProShares K-1 Free Crude Oil Strategy ETF (OILK) and United States Oil Fund (USO) belong to the same industry segment: Energy. OILK is less expensive with a Total Expense Ratio (TER) of 0.69%, versus 0.7% for USO. OILK is up 98.76% year-to-date (YTD) with +$142M in YTD flows. USO performs better with 143.35% YTD performance, and -$580M in YTD flows. Run a side-by-side ETF comparison of OILK and USO below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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OILK vs USO performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/28/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | OILK USO | +13.25%+12.88% | +35.53%+39.32% | +98.76%+143.35% | +91.21%+134.89% | +72.30%+121.64% | +103.49%+194.22% |
| Flows | OILK USO | +$2M-$197M | +$7M-$840M | +$142M-$580M | +$137M-$559M | +$63M-$1.35B | +$141M-$3.20B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | OILK USO | +23.97%+39.85% | +32.19%+51.80% | +27.74%+38.96% | +31.27%+38.86% |
| Max drawdown | OILK USO | -7.18%-11.67% | -21.17%-31.88% | -23.71%-31.88% | -36.59%-35.45% |
| Max drawdown duration | OILK USO | 9d36d | 114d114d | 608d114d | 1372d1365d |
Trading data
OILK | USO | |
Last sale 10/28/2026 at 7:59 PM | $62.16 | $163.71 |
| Previous close 10/28/2026 | $61.10 | $166.57 |
| Consolidated volume 10/28/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 30, 2026
1-year trailing difference
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OILK | USO | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
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Main metrics
Last update 10/28/2026 at 7:59 PM
Live
Closed
OILK | USO | |
|---|---|---|
| Last price | $62.16 | $163.71 |
| 1D performance | +1.73% | -1.72% |
| AuM | $258.02 M | $1.92 B |
| E/R | 0.69% | 0.7% |
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Exposure
Countries
OILK
Data will be available soon
USO
Data will be available soon
Sectors
OILK
Data will be available soon
USO
Data will be available soon
Diversification
OILK
Data will be available soon
USO
Data will be available soon
Top 15 holdings
Data as of January 1, 1970
OILK
Data will be available soon
USO
Data will be available soon
Frequently asked questions about OILK and USO
How have the OILK and USO ETFs performed in 2026?
As of October 28, 2026, OILK is up 98.76% year-to-date (YTD), while USO has returned 143.35%. That puts USO better performer ahead so far this year.
Which ETF is attracting more investor money: OILK or USO?
Year-to-date, the OILK ETF saw +$142M in flows, compared to -$580M for USO.
Which ETF is more volatile: OILK or USO?
Over the past year, OILK had a volatility of 32.19%, while USO experienced 51.8%.
Which ETF is bigger: OILK or USO?
As of October 28, 2026, OILK holds $258.02 M in assets under management (AUM), while USO manages $1.92 B.
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Latest news about OILK & USO
Israel – Iran War: Read This Before Investing in an Oil ETF
June 18, 2025
USO
Crude and Natural Gas Markets on the Move
August 12, 2024
OILK
USO
Crude Oil ETFs Surge Amid Summer Rally Speculations
June 24, 2024
USO
Crude Oil ETFs Surge Despite Falling Oil Prices
June 3, 2024
USO
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War in the Middle East: ETF Movers & Shakers
May 15, 2024
OILK
USO
War in the Middle East: ETF Movers & Shakers
May 15, 2024
OILK
USO
Oil Prices Fall After a Surprise Jump in U.S. Crude Stockpiles
January 16, 2024
USO
Energy Funds Stay in the Green as Oil Prices Inch Closer to $100 per Barrel
September 18, 2023
USO
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