IDEV vs. OAKMX
IDEV (iShares Core MSCI International Developed Markets ETF) and OAKMX (Oakmark Fund Investor Class) are both funds - IDEV is a Foreign Large Cap Equities fund tracking the MSCI World ex USA Investable Market Index, while OAKMX is a Large Cap Value Equities fund managed by Oakmark. Over the past 5 years, IDEV returned 8.52%/yr vs 9.52%/yr for OAKMX. A 0.75 correlation means they provide meaningful diversification when combined. IDEV charges 0.05%/yr vs 0.91%/yr for OAKMX.
Performance
IDEV vs. OAKMX - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, IDEV achieves a 9.59% return, which is significantly higher than OAKMX's -1.16% return.
IDEV
- 1D
- 0.42%
- 1M
- 1.14%
- YTD
- 9.59%
- 6M
- 11.02%
- 1Y
- 23.58%
- 3Y*
- 17.03%
- 5Y*
- 8.52%
- 10Y*
- —
OAKMX
- 1D
- 0.57%
- 1M
- 1.33%
- YTD
- -1.16%
- 6M
- -1.64%
- 1Y
- 10.14%
- 3Y*
- 14.13%
- 5Y*
- 9.52%
- 10Y*
- 13.52%
IDEV vs. OAKMX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
IDEV iShares Core MSCI International Developed Markets ETF | 9.59% | 32.56% | 4.54% | 17.36% | -14.99% | 13.00% | 8.32% | 23.12% | -14.10% | 17.43% |
OAKMX Oakmark Fund Investor Class | -1.16% | 14.13% | 16.02% | 30.92% | -13.38% | 34.85% | 12.90% | 27.14% | -12.76% | 17.57% |
Correlation
The correlation between IDEV and OAKMX is 0.58, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.58 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.64 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.73 |
Correlation (All Time) Calculated using the full available price history since Mar 23, 2017 | 0.75 |
The correlation between IDEV and OAKMX shifts across timeframes, from 0.58 (1 year) to 0.75 (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.
Return for Risk
IDEV vs. OAKMX — Risk / Return Rank
IDEV
OAKMX
IDEV vs. OAKMX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares Core MSCI International Developed Markets ETF (IDEV) and Oakmark Fund Investor Class (OAKMX). 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.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| IDEV | OAKMX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.80 | ||
| Sortino ratioReturn per unit of downside risk | +1.06 | ||
| Omega ratioGain probability vs. loss probability | 1.27 | 1.13 | +0.14 |
| Calmar ratioReturn relative to maximum drawdown | 1.99 | 1.27 | +0.72 |
| Martin ratioReturn relative to average drawdown | 7.76 | 3.18 | +4.58 |
Loading charts...
Drawdowns
IDEV vs. OAKMX - Drawdown Comparison
The maximum IDEV drawdown since its inception was -34.77%, smaller than the maximum OAKMX drawdown of -56.19%. Use the drawdown chart below to compare losses from any high point for IDEV and OAKMX.
Loading charts...
Drawdown Indicators
| IDEV | OAKMX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -34.77% | -56.19% | +21.42% |
Max Drawdown (1Y)Largest decline over 1 year | -11.20% | -6.98% | -4.22% |
Max Drawdown (3Y)Largest decline over 3 years | -13.41% | -17.05% | +3.64% |
Max Drawdown (5Y)Largest decline over 5 years | -29.15% | -23.68% | -5.47% |
Max Drawdown (10Y)Largest decline over 10 years | — | -41.43% | — |
Current DrawdownCurrent decline from peak | -0.37% | -3.69% | +3.32% |
Average DrawdownAverage peak-to-trough decline | -6.55% | -6.39% | -0.16% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.87% | 2.79% | +0.08% |
Volatility
IDEV vs. OAKMX - Volatility Comparison
iShares Core MSCI International Developed Markets ETF (IDEV) has a higher volatility of 5.30% compared to Oakmark Fund Investor Class (OAKMX) at 3.66%. This indicates that IDEV's price experiences larger fluctuations and is considered to be riskier than OAKMX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| IDEV | OAKMX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.30% | 3.66% | +1.64% |
Volatility (6M)Calculated over the trailing 6-month period | 12.73% | 9.57% | +3.16% |
Volatility (1Y)Calculated over the trailing 1-year period | 15.07% | 13.13% | +1.94% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 16.35% | 18.32% | -1.97% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 17.29% | 20.40% | -3.11% |
IDEV vs. OAKMX - Expense Ratio Comparison
IDEV has a 0.05% expense ratio, which is lower than OAKMX's 0.91% expense ratio.
Dividends
IDEV vs. OAKMX - Dividend Comparison
IDEV's dividend yield for the trailing twelve months is around 3.11%, more than OAKMX's 0.93% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IDEV iShares Core MSCI International Developed Markets ETF | 3.11% | 3.40% | 3.30% | 3.07% | 2.69% | 3.05% | 2.00% | 3.18% | 3.16% | 1.54% | 0.00% | 0.00% |
OAKMX Oakmark Fund Investor Class | 0.93% | 0.92% | 1.12% | 1.02% | 0.92% | 1.94% | 0.17% | 8.33% | 8.13% | 4.06% | 2.58% | 1.43% |
Frequently Asked Questions
IDEV and OAKMX have a correlation of 0.58, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
IDEV has higher volatility (5.30%) compared to OAKMX (3.66%). In terms of maximum drawdown, IDEV dropped -34.77% vs OAKMX's -56.19%.
IDEV currently has the higher Sharpe Ratio (1.48 vs 0.68), 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.
Find the right allocation for IDEV and OAKMX
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer