IEMFX vs. PRSCX

Last updated Jun 4, 2026

IEMFX (T. Rowe Price Institutional Emerging Markets Equity Fund) and PRSCX (T. Rowe Price Science And Technology Fund) are both mutual funds - IEMFX is a Emerging Markets Diversified fund managed by T. Rowe Price, while PRSCX is a Technology Equities fund managed by T. Rowe Price. Over the past 10 years, IEMFX returned 8.57%/yr vs 23.56%/yr for PRSCX. A 0.68 correlation means they provide meaningful diversification when combined. IEMFX charges 1.06%/yr vs 0.84%/yr for PRSCX.

Performance

IEMFX vs. PRSCX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in T. Rowe Price Institutional Emerging Markets Equity Fund (IEMFX) and T. Rowe Price Science And Technology Fund (PRSCX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IEMFX achieves a 32.35% return, which is significantly lower than PRSCX's 41.41% return. Over the past 10 years, IEMFX has underperformed PRSCX with an annualized return of 8.57%, while PRSCX has yielded a comparatively higher 23.56% annualized return.

IEMFX

• 1D: 1.19%
• 1M: 12.44%
• YTD: 32.35%
• 6M: 36.21%
• 1Y: 65.52%
• 3Y*: 19.75%
• 5Y*: 3.24%
• 10Y*: 8.57%

PRSCX

• 1D: 2.32%
• 1M: 21.76%
• YTD: 41.41%
• 6M: 38.56%
• 1Y: 83.87%
• 3Y*: 40.30%
• 5Y*: 18.72%
• 10Y*: 23.56%

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

IEMFX vs. PRSCX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IEMFX T. Rowe Price Institutional Emerging Markets Equity Fund	32.35%	32.91%	-1.60%	2.26%	-23.34%	-10.61%	17.81%	26.62%	-16.02%	42.87%
PRSCX T. Rowe Price Science And Technology Fund	41.41%	24.28%	40.49%	53.77%	-35.40%	5.83%	45.94%	53.80%	-7.52%	39.38%

Correlation

The correlation between IEMFX and PRSCX is 0.68, 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	0.68
Correlation (3Y) Calculated over the trailing 3-year period	0.64
Correlation (5Y) Calculated over the trailing 5-year period	0.68
Correlation (10Y) Calculated over the trailing 10-year period	0.72
Correlation (All Time) Calculated using the full available price history since Nov 5, 2002	0.68

The correlation between IEMFX and PRSCX has been stable across timeframes, ranging from 0.64 to 0.72 - a consistent structural relationship.

Return for Risk

IEMFX vs. PRSCX — Risk / Return Rank

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

IEMFX

IEMFX Risk / Return Rank: 91
IEMFX Sharpe Ratio Rank: 96
IEMFX Sortino Ratio Rank: 88
IEMFX Omega Ratio Rank: 89
IEMFX Calmar Ratio Rank: 91
IEMFX Martin Ratio Rank: 92

PRSCX

PRSCX Risk / Return Rank: 91
PRSCX Sharpe Ratio Rank: 98
PRSCX Sortino Ratio Rank: 90
PRSCX Omega Ratio Rank: 86
PRSCX Calmar Ratio Rank: 92
PRSCX Martin Ratio Rank: 91

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.

IEMFX vs. PRSCX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price Institutional Emerging Markets Equity Fund (IEMFX) and T. Rowe Price Science And Technology Fund (PRSCX). 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.

	IEMFX	PRSCX	Difference
Sharpe ratio: Return per unit of total volatility	3.46	3.79	-0.33
Sortino ratio: Return per unit of downside risk	4.24	4.40	-0.16
Omega ratio: Gain probability vs. loss probability	1.64	1.59	+0.06
Calmar ratio: Return relative to maximum drawdown	4.86	5.02	-0.16
Martin ratio: Return relative to average drawdown	19.78	18.70	+1.08
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IEMFX vs. PRSCX - Sharpe Ratio Comparison

The current IEMFX Sharpe Ratio is 3.46, which is comparable to the PRSCX Sharpe Ratio of 3.79. The chart below compares the historical Sharpe Ratios of IEMFX and PRSCX, 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

	IEMFX	PRSCX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.46	3.79	-0.33
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.18	0.68	-0.50
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.46	0.96	-0.49
Sharpe Ratio (All Time) Calculated using the full available price history	0.47	0.52	-0.06

Drawdowns

IEMFX vs. PRSCX - Drawdown Comparison

The maximum IEMFX drawdown since its inception was -71.65%, smaller than the maximum PRSCX drawdown of -85.26%. Use the drawdown chart below to compare losses from any high point for IEMFX and PRSCX.

Drawdown Indicators

	IEMFX	PRSCX	Difference
Max Drawdown Largest peak-to-trough decline	-71.65%	-85.26%	+13.61%
Max Drawdown (1Y) Largest decline over 1 year	-13.49%	-17.99%	+4.50%
Max Drawdown (3Y) Largest decline over 3 years	-16.34%	-31.06%	+14.72%
Max Drawdown (5Y) Largest decline over 5 years	-43.14%	-46.19%	+3.05%
Max Drawdown (10Y) Largest decline over 10 years	-46.27%	-46.19%	-0.08%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-19.76%	-29.89%	+10.13%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.30%	4.75%	-1.45%

Volatility

IEMFX vs. PRSCX - Volatility Comparison

The current volatility for T. Rowe Price Institutional Emerging Markets Equity Fund (IEMFX) is 8.15%, while T. Rowe Price Science And Technology Fund (PRSCX) has a volatility of 9.43%. This indicates that IEMFX experiences smaller price fluctuations and is considered to be less risky than PRSCX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IEMFX	PRSCX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.15%	9.43%	-1.28%
Volatility (6M) Calculated over the trailing 6-month period	16.28%	19.91%	-3.63%
Volatility (1Y) Calculated over the trailing 1-year period	18.92%	23.82%	-4.90%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.91%	27.82%	-9.91%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.60%	24.81%	-6.21%

IEMFX vs. PRSCX - Expense Ratio Comparison

IEMFX has a 1.06% expense ratio, which is higher than PRSCX's 0.84% expense ratio.

Dividends

IEMFX vs. PRSCX - Dividend Comparison

IEMFX's dividend yield for the trailing twelve months is around 1.84%, less than PRSCX's 8.15% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IEMFX T. Rowe Price Institutional Emerging Markets Equity Fund	1.84%	2.43%	0.92%	1.88%	3.87%	3.07%	0.56%	1.43%	1.15%	0.54%	0.83%	0.69%
PRSCX T. Rowe Price Science And Technology Fund	8.15%	11.53%	9.43%	0.00%	7.83%	33.69%	13.90%	10.91%	36.03%	13.21%	3.68%	18.51%

Frequently Asked Questions

Can I hold both IEMFX and PRSCX in my portfolio?

IEMFX and PRSCX have a correlation of 0.68, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IEMFX or PRSCX?

PRSCX has higher volatility (9.43%) compared to IEMFX (8.15%). In terms of maximum drawdown, IEMFX dropped -71.65% vs PRSCX's -85.26%.

Which has better risk-adjusted returns?

PRSCX currently has the higher Sharpe Ratio (3.79 vs 3.46), 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.