OANMX vs. FSPSX

Last updated Aug 1, 2026

OANMX (Oakmark Fund Institutional Class) and FSPSX (Fidelity International Index Fund) are both mutual funds - OANMX is a Large Cap Value Equities fund managed by Oakmark, while FSPSX is a Foreign Large Cap Equities fund tracking the MSCI EAFE Index. Over the past 5 years, OANMX returned 11.39%/yr vs 9.66%/yr for FSPSX. Their 0.70 correlation means they have sometimes moved together and sometimes differently. OANMX charges 0.68%/yr vs 0.04%/yr for FSPSX.

Performance

OANMX vs. FSPSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Oakmark Fund Institutional Class (OANMX) and Fidelity International Index Fund (FSPSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, OANMX achieves a 6.52% return, which is significantly lower than FSPSX's 12.57% return.

OANMX

• 1D: -0.32%
• 1M: 3.41%
• 6M: 6.46%
• YTD: 6.52%
• 1Y: 17.10%
• 3Y*: 14.52%
• 5Y*: 11.39%
• 10Y*: —
• ALL TIME*: 12.84%

FSPSX

• 1D: 2.56%
• 1M: 1.98%
• 6M: 7.21%
• YTD: 12.57%
• 1Y: 26.28%
• 3Y*: 16.54%
• 5Y*: 9.66%
• 10Y*: 9.69%
• ALL TIME*: 8.28%

*Multi-year figures are annualized to reflect compound growth (CAGR)

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
FSPSX Fidelity International Index Fund	$0.00	$0.00	$0.00
OANMX Oakmark Fund Institutional Class	$0.00	$0.00	$0.00

OANMX vs. FSPSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
OANMX Oakmark Fund Institutional Class	6.52%	14.38%	16.28%	31.21%	-13.18%	34.87%	13.09%	27.35%	-12.62%	15.96%
FSPSX Fidelity International Index Fund	12.57%	31.98%	3.70%	18.31%	-14.23%	11.45%	8.16%	22.03%	-13.55%	25.37%

Correlation

The correlation between OANMX and FSPSX is 0.45, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.45
Correlation (3Y) Balances recent behavior with more history.	0.57
Correlation (5Y) Shows whether the relationship held over a longer period.	0.67
Correlation (All Time) Calculated using the full available price history since Jan 3, 2017	0.70

Over the past year, the correlation between OANMX and FSPSX has dropped to 0.45 - well below their long-term average of 0.70, suggesting their price drivers have been diverging.

Return for Risk

OANMX vs. FSPSX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

OANMX

OANMX Risk / Return Rank: 38
OANMX Sharpe Ratio Rank: 33
OANMX Sortino Ratio Rank: 34
OANMX Omega Ratio Rank: 31
OANMX Calmar Ratio Rank: 59
OANMX Martin Ratio Rank: 35

FSPSX

FSPSX Risk / Return Rank: 70
FSPSX Sharpe Ratio Rank: 72
FSPSX Sortino Ratio Rank: 70
FSPSX Omega Ratio Rank: 69
FSPSX Calmar Ratio Rank: 70
FSPSX Martin Ratio Rank: 70

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

OANMX vs. FSPSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Oakmark Fund Institutional Class (OANMX) and Fidelity International Index Fund (FSPSX). 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.

	OANMX	FSPSX	Difference
Sharpe ratio: Return per unit of total volatility	1.02	1.62	-0.60
Sortino ratio: Return per unit of downside risk	1.54	2.29	-0.75
Omega ratio: Gain probability vs. loss probability	1.18	1.29	-0.11
Calmar ratio: Return relative to maximum drawdown	1.98	2.20	-0.21
Martin ratio: Return relative to average drawdown	4.95	8.33	-3.37

OANMX vs. FSPSX - Sharpe Ratio Comparison

The current OANMX Sharpe Ratio is 1.02, which is lower than the FSPSX Sharpe Ratio of 1.62. The chart below compares the historical Sharpe Ratios of OANMX and FSPSX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

OANMX vs. FSPSX - Drawdown Comparison

The maximum OANMX drawdown since its inception was -40.08%, which is greater than FSPSX's maximum drawdown of -33.69%. Use the drawdown chart below to compare losses from any high point for OANMX and FSPSX.

Drawdown Indicators

	OANMX	FSPSX	Difference
Max Drawdown Largest peak-to-trough decline	-40.08%	-33.69%	-6.39%
Max Drawdown (1Y) Largest decline over 1 year	-6.93%	-11.39%	+4.46%
Max Drawdown (3Y) Largest decline over 3 years	-17.01%	-13.58%	-3.43%
Max Drawdown (5Y) Largest decline over 5 years	-23.55%	-29.41%	+5.86%
Max Drawdown (10Y) Largest decline over 10 years	—	-33.69%	—
Current Drawdown Current decline from peak	-0.45%	0.00%	-0.45%
Average Drawdown Average peak-to-trough decline	-5.52%	-6.49%	+0.97%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.79%	3.00%	-0.21%

Volatility

OANMX vs. FSPSX - Volatility Comparison

Oakmark Fund Institutional Class (OANMX) and Fidelity International Index Fund (FSPSX) have volatilities of 4.55% and 4.57%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OANMX	FSPSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.55%	4.57%	-0.02%
Volatility (6M) Calculated over the trailing 6-month period	9.77%	13.22%	-3.45%
Volatility (1Y) Calculated over the trailing 1-year period	13.56%	15.52%	-1.96%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.25%	16.12%	+2.13%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.56%	16.29%	+4.27%

OANMX vs. FSPSX - Expense Ratio Comparison

OANMX has a 0.68% expense ratio, which is higher than FSPSX's 0.04% expense ratio.

Dividends

OANMX vs. FSPSX - Dividend Comparison

OANMX's dividend yield for the trailing twelve months is around 1.07%, less than FSPSX's 2.80% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FSPSX Fidelity International Index Fund	2.80%	3.15%	3.27%	2.79%	2.66%	3.07%	1.84%	3.18%	2.79%	2.50%	3.08%	2.79%
OANMX Oakmark Fund Institutional Class	1.07%	1.14%	1.34%	1.22%	1.17%	1.94%	0.33%	8.53%	8.37%	0.66%	0.00%	0.00%

Frequently Asked Questions

Can I hold both OANMX and FSPSX in my portfolio?

OANMX and FSPSX have a correlation of 0.45, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, OANMX or FSPSX?

FSPSX has higher volatility (4.57%) compared to OANMX (4.55%). In terms of maximum drawdown, OANMX dropped -40.08% vs FSPSX's -33.69%.

Which has better risk-adjusted returns?

FSPSX currently has the higher Sharpe Ratio (1.62 vs 1.02), 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.