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AOK vs. USO
Performance
Return for Risk
Drawdowns
Volatility
Dividends

AOK vs. USO

Last updated Jun 5, 2026

AOK (iShares Core Conservative Allocation ETF) and USO (United States Oil Fund LP) are both exchange-traded funds - AOK is a Diversified Portfolio fund tracking the S&P Target Risk Conservative Index, while USO is a Oil & Gas fund tracking the Front Month Light Sweet Crude Oil. Both are passively managed. Over the past 10 years, AOK returned 5.14%/yr vs 3.57%/yr for USO. At a 0.21 correlation, their price movements are largely independent. AOK charges 0.25%/yr vs 0.86%/yr for USO.

Performance

AOK vs. USO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Core Conservative Allocation ETF (AOK) and United States Oil Fund LP (USO). The values are adjusted to include any dividend payments, if applicable.

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Returns By Period

In the year-to-date period, AOK achieves a 4.41% return, which is significantly lower than USO's 97.72% return. Over the past 10 years, AOK has outperformed USO with an annualized return of 5.14%, while USO has yielded a comparatively lower 3.57% annualized return.

AOK

1D
0.14%
1M
1.38%
YTD
4.41%
6M
4.33%
1Y
11.77%
3Y*
9.39%
5Y*
3.74%
10Y*
5.14%

USO

1D
-2.92%
1M
-5.15%
YTD
97.72%
6M
91.54%
1Y
97.20%
3Y*
28.78%
5Y*
23.67%
10Y*
3.57%
*Multi-year figures are annualized to reflect compound growth (CAGR)

AOK vs. USO - Yearly Performance Comparison

2026 (YTD)202520242023202220212020201920182017
AOK
iShares Core Conservative Allocation ETF		4.41%11.26%6.58%10.85%-14.16%4.87%9.33%13.90%-3.09%9.70%
USO
United States Oil Fund LP		97.72%-8.46%13.35%-4.94%28.97%64.68%-67.79%32.61%-19.57%2.47%

Correlation

The correlation between AOK and USO is -0.42, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

Correlation
Correlation (1Y)
Calculated over the trailing 1-year period

-0.42

Correlation (3Y)
Calculated over the trailing 3-year period

-0.15

Correlation (5Y)
Calculated over the trailing 5-year period

-0.03

Correlation (10Y)
Calculated over the trailing 10-year period

0.10

Correlation (All Time)
Calculated using the full available price history since Nov 11, 2008

0.21

The correlation between AOK and USO shifts across timeframes, from -0.42 (1 year) to 0.21 (all time), reflecting how their relationship changes across market environments.

Compare stocks, funds, or ETFs

Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.

iShares Core Conservative Allocation ETF

United States Oil Fund LP

Often compared with AOK:
AOK vs. AOMAOK vs. AOAAOK vs. SGOVAOK vs. AGGAOK vs. VTAOK vs. VOOAOK vs. EAOM
Often compared with USO:
USO vs. XLEUSO vs. BNOUSO vs. UCOUSO vs. USLUSO vs. OILKUSO vs. DBOUSO vs. WTI

Return for Risk

AOK vs. USO — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
AOK
AOK Risk / Return Rank: 6262
Overall Rank
AOK Sharpe Ratio Rank: 6363
Sharpe Ratio Rank
AOK Sortino Ratio Rank: 6464
Sortino Ratio Rank
AOK Omega Ratio Rank: 6767
Omega Ratio Rank
AOK Calmar Ratio Rank: 5454
Calmar Ratio Rank
AOK Martin Ratio Rank: 6363
Martin Ratio Rank
USO
USO Risk / Return Rank: 6666
Overall Rank
USO Sharpe Ratio Rank: 6868
Sharpe Ratio Rank
USO Sortino Ratio Rank: 6161
Sortino Ratio Rank
USO Omega Ratio Rank: 6262
Omega Ratio Rank
USO Calmar Ratio Rank: 8686
Calmar Ratio Rank
USO Martin Ratio Rank: 5454
Martin Ratio Rank
The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

AOK vs. USO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Core Conservative Allocation ETF (AOK) and United States Oil Fund LP (USO). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

AOKUSODifference
Sharpe ratioReturn per unit of total volatility
2.06
2.21

-0.15

Sortino ratioReturn per unit of downside risk
2.94
2.80

+0.14

Omega ratioGain probability vs. loss probability

1.40

1.37

+0.03

Calmar ratioReturn relative to maximum drawdown

2.63

4.79

-2.16

Martin ratioReturn relative to average drawdown

11.18

9.00

+2.18

Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AOK vs. USO - Sharpe Ratio Comparison

The current AOK Sharpe Ratio is 2.06, which is comparable to the USO Sharpe Ratio of 2.21. The chart below compares the historical Sharpe Ratios of AOK and USO, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

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Sharpe Ratios by Period

AOKUSODifference

Sharpe Ratio (1Y)

Calculated over the trailing 1-year period

2.06

2.21

-0.15

Sharpe Ratio (5Y)

Calculated over the trailing 5-year period

0.53

0.66

-0.13

Sharpe Ratio (10Y)

Calculated over the trailing 10-year period

0.77

0.09

+0.68

Sharpe Ratio (All Time)

Calculated using the full available price history

0.71

-0.18

+0.89

Drawdowns

AOK vs. USO - Drawdown Comparison

The maximum AOK drawdown since its inception was -18.94%, smaller than the maximum USO drawdown of -98.19%. Use the drawdown chart below to compare losses from any high point for AOK and USO.

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Drawdown Indicators

AOKUSODifference

Max Drawdown

Largest peak-to-trough decline

-18.94%

-98.19%

+79.25%

Max Drawdown (1Y)

Largest decline over 1 year

-4.50%

-20.39%

+15.89%

Max Drawdown (3Y)

Largest decline over 3 years

-6.37%

-26.05%

+19.68%

Max Drawdown (5Y)

Largest decline over 5 years

-18.94%

-36.23%

+17.29%

Max Drawdown (10Y)

Largest decline over 10 years

-18.94%

-86.75%

+67.81%

Current Drawdown

Current decline from peak

-0.26%

-85.45%

+85.19%

Average Drawdown

Average peak-to-trough decline

-2.37%

-75.30%

+72.93%

Ulcer Index

Depth and duration of drawdowns from previous peaks

1.06%

10.84%

-9.78%

Volatility

AOK vs. USO - Volatility Comparison

The current volatility for iShares Core Conservative Allocation ETF (AOK) is 1.94%, while United States Oil Fund LP (USO) has a volatility of 14.97%. This indicates that AOK experiences smaller price fluctuations and is considered to be less risky than USO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

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Volatility by Period

AOKUSODifference

Volatility (1M)

Calculated over the trailing 1-month period

1.94%

14.97%

-13.03%

Volatility (6M)

Calculated over the trailing 6-month period

4.47%

38.35%

-33.88%

Volatility (1Y)

Calculated over the trailing 1-year period

5.76%

44.32%

-38.56%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

7.10%

36.09%

-28.99%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

6.71%

39.00%

-32.29%

AOK vs. USO - Expense Ratio Comparison

AOK has a 0.25% expense ratio, which is lower than USO's 0.86% expense ratio.

Dividends

AOK vs. USO - Dividend Comparison

AOK's dividend yield for the trailing twelve months is around 3.28%, while USO has not paid dividends to shareholders.

PositionTTM20252024202320222021202020192018201720162015
AOK
iShares Core Conservative Allocation ETF		3.28%3.28%3.23%2.93%2.25%1.55%2.10%2.71%2.68%2.91%2.14%2.02%
USO
United States Oil Fund LP		0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%

Frequently Asked Questions

AOK and USO have a correlation of -0.42, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

USO has higher volatility (14.97%) compared to AOK (1.94%). In terms of maximum drawdown, AOK dropped -18.94% vs USO's -98.19%.

On 10-year performance, AOK leads with 5.14% vs 3.57% for USO. On fees, AOK is cheaper at 0.25% per year. On volatility, AOK has been the lower-risk option at 1.94%. The better choice depends on whether you care most about return, fees, risk, or income.

Over the 10-year period, AOK has performed better with a 5.14% return vs 3.57%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

AOK is cheaper with a 0.25% expense ratio, compared with 0.86% for USO.

AOK has the higher dividend yield at 3.28%, compared with 0.00% for USO.

AOK is categorized as Diversified Portfolio, while USO is Oil & Gas. AOK tracks S&P Target Risk Conservative Index, while USO tracks Front Month Light Sweet Crude Oil. They also come from different issuers: iShares and USCF. Their fees differ too: 0.25% for AOK and 0.86% for USO.

USO currently has the higher Sharpe Ratio (2.21 vs 2.06), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.

Portfolio Optimizer

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