PRIJX vs. PRUIX

Last updated Jun 5, 2026

PRIJX (T. Rowe Price Emerging Markets Discovery Stock Fund Investor Class) and PRUIX (T. Rowe Price Equity Index 500 Fund - I Class) are both mutual funds - PRIJX is a Emerging Markets Equities fund actively managed by T. Rowe Price, while PRUIX is a Large Cap Blend Equities fund tracking the S&P 500 Index. PRIJX is actively managed, while PRUIX is passively managed. Over the past 10 years, PRIJX returned 12.15%/yr vs 15.49%/yr for PRUIX. A 0.65 correlation means they provide meaningful diversification when combined. PRIJX charges 1.13%/yr vs 0.05%/yr for PRUIX.

Performance

PRIJX vs. PRUIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in T. Rowe Price Emerging Markets Discovery Stock Fund Investor Class (PRIJX) and T. Rowe Price Equity Index 500 Fund - I Class (PRUIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PRIJX achieves a 29.71% return, which is significantly higher than PRUIX's 10.85% return. Over the past 10 years, PRIJX has underperformed PRUIX with an annualized return of 12.15%, while PRUIX has yielded a comparatively higher 15.49% annualized return.

PRIJX

• 1D: -1.06%
• 1M: 8.60%
• YTD: 29.71%
• 6M: 33.49%
• 1Y: 62.08%
• 3Y*: 26.48%
• 5Y*: 10.33%
• 10Y*: 12.15%

PRUIX

• 1D: -0.74%
• 1M: 4.16%
• YTD: 10.85%
• 6M: 10.76%
• 1Y: 27.96%
• 3Y*: 22.40%
• 5Y*: 13.86%
• 10Y*: 15.49%

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

PRIJX vs. PRUIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PRIJX T. Rowe Price Emerging Markets Discovery Stock Fund Investor Class	29.71%	38.56%	5.75%	11.13%	-15.64%	4.50%	6.87%	16.63%	-9.91%	32.57%
PRUIX T. Rowe Price Equity Index 500 Fund - I Class	10.85%	17.82%	24.95%	26.24%	-18.14%	28.62%	18.31%	31.63%	-4.44%	21.14%

Correlation

The correlation between PRIJX and PRUIX is 0.67, 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	0.67
Correlation (3Y) Calculated over the trailing 3-year period	0.64
Correlation (5Y) Calculated over the trailing 5-year period	0.63
Correlation (10Y) Calculated over the trailing 10-year period	0.65
Correlation (All Time) Calculated using the full available price history since Jan 5, 2016	0.65

The correlation between PRIJX and PRUIX has been stable across timeframes, ranging from 0.63 to 0.67 - a consistent structural relationship.

Return for Risk

PRIJX vs. PRUIX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

PRIJX

PRIJX Risk / Return Rank: 92
PRIJX Sharpe Ratio Rank: 96
PRIJX Sortino Ratio Rank: 90
PRIJX Omega Ratio Rank: 90
PRIJX Calmar Ratio Rank: 92
PRIJX Martin Ratio Rank: 92

PRUIX

PRUIX Risk / Return Rank: 66
PRUIX Sharpe Ratio Rank: 65
PRUIX Sortino Ratio Rank: 60
PRUIX Omega Ratio Rank: 60
PRUIX Calmar Ratio Rank: 67
PRUIX Martin Ratio Rank: 79

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.

PRIJX vs. PRUIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price Emerging Markets Discovery Stock Fund Investor Class (PRIJX) and T. Rowe Price Equity Index 500 Fund - I Class (PRUIX). 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.

	PRIJX	PRUIX	Difference
Sharpe ratio: Return per unit of total volatility	3.53	2.37	+1.16
Sortino ratio: Return per unit of downside risk	4.44	3.23	+1.20
Omega ratio: Gain probability vs. loss probability	1.66	1.43	+0.23
Calmar ratio: Return relative to maximum drawdown	4.82	3.15	+1.67
Martin ratio: Return relative to average drawdown	19.06	14.73	+4.33
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PRIJX vs. PRUIX - Sharpe Ratio Comparison

The current PRIJX Sharpe Ratio is 3.53, which is higher than the PRUIX Sharpe Ratio of 2.37. The chart below compares the historical Sharpe Ratios of PRIJX and PRUIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	PRIJX	PRUIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.53	2.37	+1.16
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.62	0.82	-0.20
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.69	0.86	-0.17
Sharpe Ratio (All Time) Calculated using the full available price history	0.68	0.86	-0.18

Drawdowns

PRIJX vs. PRUIX - Drawdown Comparison

The maximum PRIJX drawdown since its inception was -41.67%, which is greater than PRUIX's maximum drawdown of -33.80%. Use the drawdown chart below to compare losses from any high point for PRIJX and PRUIX.

Drawdown Indicators

	PRIJX	PRUIX	Difference
Max Drawdown Largest peak-to-trough decline	-41.67%	-33.80%	-7.87%
Max Drawdown (1Y) Largest decline over 1 year	-13.26%	-8.91%	-4.35%
Max Drawdown (3Y) Largest decline over 3 years	-16.15%	-18.76%	+2.61%
Max Drawdown (5Y) Largest decline over 5 years	-32.32%	-24.52%	-7.80%
Max Drawdown (10Y) Largest decline over 10 years	-41.67%	-33.80%	-7.87%
Current Drawdown Current decline from peak	-1.06%	-0.74%	-0.32%
Average Drawdown Average peak-to-trough decline	-9.92%	-4.23%	-5.69%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.35%	1.90%	+1.45%

Volatility

PRIJX vs. PRUIX - Volatility Comparison

T. Rowe Price Emerging Markets Discovery Stock Fund Investor Class (PRIJX) has a higher volatility of 8.43% compared to T. Rowe Price Equity Index 500 Fund - I Class (PRUIX) at 2.92%. This indicates that PRIJX's price experiences larger fluctuations and is considered to be riskier than PRUIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PRIJX	PRUIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.43%	2.92%	+5.51%
Volatility (6M) Calculated over the trailing 6-month period	15.55%	8.99%	+6.56%
Volatility (1Y) Calculated over the trailing 1-year period	18.13%	11.89%	+6.24%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.72%	16.99%	-0.27%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.70%	18.10%	-0.40%

PRIJX vs. PRUIX - Expense Ratio Comparison

PRIJX has a 1.13% expense ratio, which is higher than PRUIX's 0.05% expense ratio.

Dividends

PRIJX vs. PRUIX - Dividend Comparison

PRIJX's dividend yield for the trailing twelve months is around 3.48%, more than PRUIX's 2.23% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
PRIJX T. Rowe Price Emerging Markets Discovery Stock Fund Investor Class	3.48%	4.51%	3.15%	2.99%	1.93%	2.29%	0.76%	2.55%	1.66%	3.67%	4.69%
PRUIX T. Rowe Price Equity Index 500 Fund - I Class	2.23%	2.44%	1.28%	1.44%	1.69%	1.64%	2.09%	2.25%	2.77%	1.39%	2.16%

Frequently Asked Questions

Can I hold both PRIJX and PRUIX in my portfolio?

PRIJX and PRUIX have a correlation of 0.67, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PRIJX or PRUIX?

PRIJX has higher volatility (8.43%) compared to PRUIX (2.92%). In terms of maximum drawdown, PRIJX dropped -41.67% vs PRUIX's -33.80%.

Which has better risk-adjusted returns?

PRIJX currently has the higher Sharpe Ratio (3.53 vs 2.37), 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.