TRRMX vs. PREIX

Last updated Jun 4, 2026

TRRMX (T. Rowe Price Retirement 2050 Fund) and PREIX (T. Rowe Price Equity Index 500 Fund) are both mutual funds - TRRMX is a Target Retirement Date fund actively managed by T. Rowe Price, while PREIX is a Large Cap Blend Equities fund managed by T. Rowe Price. Over the past 10 years, TRRMX returned 11.17%/yr vs 15.42%/yr for PREIX. With a 0.95 correlation, they move nearly in lockstep. TRRMX charges 0.62%/yr vs 0.15%/yr for PREIX.

Performance

TRRMX vs. PREIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in T. Rowe Price Retirement 2050 Fund (TRRMX) and T. Rowe Price Equity Index 500 Fund (PREIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both stocks are quite close, with TRRMX having a 11.69% return and PREIX slightly lower at 11.61%. Over the past 10 years, TRRMX has underperformed PREIX with an annualized return of 11.17%, while PREIX has yielded a comparatively higher 15.42% annualized return.

TRRMX

• 1D: 0.46%
• 1M: 4.59%
• YTD: 11.69%
• 6M: 8.00%
• 1Y: 21.15%
• 3Y*: 17.18%
• 5Y*: 8.47%
• 10Y*: 11.17%

PREIX

• 1D: 0.13%
• 1M: 5.78%
• YTD: 11.61%
• 6M: 11.63%
• 1Y: 28.74%
• 3Y*: 22.53%
• 5Y*: 14.08%
• 10Y*: 15.42%

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

TRRMX vs. PREIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
TRRMX T. Rowe Price Retirement 2050 Fund	11.69%	14.26%	14.19%	20.85%	-19.09%	17.51%	18.67%	25.35%	-7.66%	20.83%
PREIX T. Rowe Price Equity Index 500 Fund	11.61%	17.66%	24.78%	26.07%	-18.27%	28.48%	18.17%	31.47%	-4.59%	21.01%

Correlation

The correlation between TRRMX and PREIX is 0.89, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.89
Correlation (3Y) Calculated over the trailing 3-year period	0.91
Correlation (5Y) Calculated over the trailing 5-year period	0.93
Correlation (10Y) Calculated over the trailing 10-year period	0.93
Correlation (All Time) Calculated using the full available price history since Jan 4, 2007	0.95

The correlation between TRRMX and PREIX has been stable across timeframes, ranging from 0.89 to 0.95 - a consistent structural relationship.

Return for Risk

TRRMX vs. PREIX — Risk / Return Rank

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

TRRMX

TRRMX Risk / Return Rank: 39
TRRMX Sharpe Ratio Rank: 38
TRRMX Sortino Ratio Rank: 36
TRRMX Omega Ratio Rank: 40
TRRMX Calmar Ratio Rank: 36
TRRMX Martin Ratio Rank: 45

PREIX

PREIX Risk / Return Rank: 72
PREIX Sharpe Ratio Rank: 74
PREIX Sortino Ratio Rank: 66
PREIX Omega Ratio Rank: 66
PREIX Calmar Ratio Rank: 73
PREIX Martin Ratio Rank: 82

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.

TRRMX vs. PREIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price Retirement 2050 Fund (TRRMX) and T. Rowe Price Equity Index 500 Fund (PREIX). 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.

	TRRMX	PREIX	Difference
Sharpe ratio: Return per unit of total volatility	1.79	2.50	-0.71
Sortino ratio: Return per unit of downside risk	2.51	3.40	-0.88
Omega ratio: Gain probability vs. loss probability	1.34	1.45	-0.12
Calmar ratio: Return relative to maximum drawdown	2.27	3.32	-1.04
Martin ratio: Return relative to average drawdown	9.45	15.47	-6.02
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

TRRMX vs. PREIX - Sharpe Ratio Comparison

The current TRRMX Sharpe Ratio is 1.79, which is comparable to the PREIX Sharpe Ratio of 2.50. The chart below compares the historical Sharpe Ratios of TRRMX and PREIX, 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

	TRRMX	PREIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.79	2.50	-0.71
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.56	0.83	-0.27
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.73	0.85	-0.13
Sharpe Ratio (All Time) Calculated using the full available price history	0.47	0.61	-0.15

Drawdowns

TRRMX vs. PREIX - Drawdown Comparison

The maximum TRRMX drawdown since its inception was -53.59%, roughly equal to the maximum PREIX drawdown of -55.32%. Use the drawdown chart below to compare losses from any high point for TRRMX and PREIX.

Drawdown Indicators

	TRRMX	PREIX	Difference
Max Drawdown Largest peak-to-trough decline	-53.59%	-55.32%	+1.73%
Max Drawdown (1Y) Largest decline over 1 year	-9.74%	-8.93%	-0.81%
Max Drawdown (3Y) Largest decline over 3 years	-15.50%	-18.78%	+3.28%
Max Drawdown (5Y) Largest decline over 5 years	-27.95%	-24.60%	-3.35%
Max Drawdown (10Y) Largest decline over 10 years	-32.51%	-33.81%	+1.30%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-7.57%	-8.73%	+1.16%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.31%	1.91%	+0.40%

Volatility

TRRMX vs. PREIX - Volatility Comparison

T. Rowe Price Retirement 2050 Fund (TRRMX) has a higher volatility of 3.46% compared to T. Rowe Price Equity Index 500 Fund (PREIX) at 2.83%. This indicates that TRRMX's price experiences larger fluctuations and is considered to be riskier than PREIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TRRMX	PREIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.46%	2.83%	+0.63%
Volatility (6M) Calculated over the trailing 6-month period	10.30%	8.98%	+1.32%
Volatility (1Y) Calculated over the trailing 1-year period	12.37%	11.87%	+0.50%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.21%	17.00%	-1.79%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.49%	18.11%	-2.62%

TRRMX vs. PREIX - Expense Ratio Comparison

TRRMX has a 0.62% expense ratio, which is higher than PREIX's 0.15% expense ratio.

Dividends

TRRMX vs. PREIX - Dividend Comparison

TRRMX has not paid dividends to shareholders, while PREIX's dividend yield for the trailing twelve months is around 2.10%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PREIX T. Rowe Price Equity Index 500 Fund	2.10%	2.32%	1.17%	1.32%	1.50%	1.56%	1.97%	2.13%	2.60%	1.30%	2.03%	2.02%
TRRMX T. Rowe Price Retirement 2050 Fund	0.00%	0.00%	1.88%	4.45%	7.81%	6.91%	4.33%	5.75%	8.56%	2.32%	3.08%	3.96%

Frequently Asked Questions

Can I hold both TRRMX and PREIX in my portfolio?

TRRMX and PREIX have a correlation of 0.89, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, TRRMX or PREIX?

TRRMX has higher volatility (3.46%) compared to PREIX (2.83%). In terms of maximum drawdown, TRRMX dropped -53.59% vs PREIX's -55.32%.

Which has better risk-adjusted returns?

PREIX currently has the higher Sharpe Ratio (2.50 vs 1.79), 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.