TBLEX vs. PREIX

Last updated Jun 24, 2026

TBLEX (T. Rowe Price Retirement Blend 2025 Fund) and PREIX (T. Rowe Price Equity Index 500 Fund) are both mutual funds - TBLEX is a Target Retirement Date fund managed by T. Rowe Price, while PREIX is a Large Cap Blend Equities fund tracking the S&P 500 Index. Over the past 3 years, TBLEX returned 12.85%/yr vs 21.17%/yr for PREIX. Their correlation of 0.92 suggests significant overlap in exposure. TBLEX charges 0.22%/yr vs 0.15%/yr for PREIX.

Performance

TBLEX vs. PREIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in T. Rowe Price Retirement Blend 2025 Fund (TBLEX) and T. Rowe Price Equity Index 500 Fund (PREIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TBLEX achieves a 6.76% return, which is significantly lower than PREIX's 9.68% return.

TBLEX

• 1D: -0.17%
• 1M: 0.95%
• YTD: 6.76%
• 6M: 6.47%
• 1Y: 16.08%
• 3Y*: 12.85%
• 5Y*: —
• 10Y*: —

PREIX

• 1D: -0.37%
• 1M: 0.08%
• YTD: 9.68%
• 6M: 8.67%
• 1Y: 25.27%
• 3Y*: 21.17%
• 5Y*: 13.41%
• 10Y*: 15.55%

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

TBLEX vs. PREIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
TBLEX T. Rowe Price Retirement Blend 2025 Fund	6.76%	13.88%	10.29%	15.00%	-15.23%	2.43%
PREIX T. Rowe Price Equity Index 500 Fund	9.68%	17.66%	24.78%	26.07%	-18.27%	8.42%

Correlation

The correlation between TBLEX and PREIX is 0.93, 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	0.93
Correlation (3Y) Calculated over the trailing 3-year period	0.91
Correlation (All Time) Calculated using the full available price history since Jul 30, 2021	0.92

The correlation between TBLEX and PREIX has been stable across timeframes, ranging from 0.91 to 0.93 - a consistent structural relationship.

Return for Risk

TBLEX vs. PREIX — Risk / Return Rank

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

TBLEX

TBLEX Risk / Return Rank: 68
TBLEX Sharpe Ratio Rank: 69
TBLEX Sortino Ratio Rank: 69
TBLEX Omega Ratio Rank: 71
TBLEX Calmar Ratio Rank: 62
TBLEX Martin Ratio Rank: 70

PREIX

PREIX Risk / Return Rank: 64
PREIX Sharpe Ratio Rank: 62
PREIX Sortino Ratio Rank: 56
PREIX Omega Ratio Rank: 58
PREIX Calmar Ratio Rank: 66
PREIX Martin Ratio Rank: 77

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.

TBLEX vs. PREIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price Retirement Blend 2025 Fund (TBLEX) 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.

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.

	TBLEX	PREIX	Difference
Sharpe ratio: Return per unit of total volatility	2.23	2.13	+0.09
Sortino ratio: Return per unit of downside risk	3.15	2.88	+0.27
Omega ratio: Gain probability vs. loss probability	1.43	1.39	+0.04
Calmar ratio: Return relative to maximum drawdown	2.88	2.98	-0.10
Martin ratio: Return relative to average drawdown	12.60	13.43	-0.82

TBLEX vs. PREIX - Sharpe Ratio Comparison

The current TBLEX Sharpe Ratio is 2.23, which is comparable to the PREIX Sharpe Ratio of 2.13. The chart below compares the historical Sharpe Ratios of TBLEX 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.

Drawdowns

TBLEX vs. PREIX - Drawdown Comparison

The maximum TBLEX drawdown since its inception was -21.51%, smaller than the maximum PREIX drawdown of -55.32%. Use the drawdown chart below to compare losses from any high point for TBLEX and PREIX.

Drawdown Indicators

	TBLEX	PREIX	Difference
Max Drawdown Largest peak-to-trough decline	-21.51%	-55.32%	+33.81%
Max Drawdown (1Y) Largest decline over 1 year	-5.80%	-8.93%	+3.13%
Max Drawdown (3Y) Largest decline over 3 years	-8.94%	-18.78%	+9.84%
Max Drawdown (5Y) Largest decline over 5 years	—	-24.60%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-33.81%	—
Current Drawdown Current decline from peak	-0.43%	-1.73%	+1.30%
Average Drawdown Average peak-to-trough decline	-5.36%	-8.71%	+3.35%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.32%	1.98%	-0.66%

Volatility

TBLEX vs. PREIX - Volatility Comparison

The current volatility for T. Rowe Price Retirement Blend 2025 Fund (TBLEX) is 2.90%, while T. Rowe Price Equity Index 500 Fund (PREIX) has a volatility of 4.68%. This indicates that TBLEX experiences smaller price fluctuations and is considered to be less risky than PREIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TBLEX	PREIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.90%	4.68%	-1.78%
Volatility (6M) Calculated over the trailing 6-month period	6.26%	9.84%	-3.58%
Volatility (1Y) Calculated over the trailing 1-year period	7.52%	12.51%	-4.99%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	9.82%	17.09%	-7.27%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	9.82%	18.15%	-8.33%

TBLEX vs. PREIX - Expense Ratio Comparison

TBLEX has a 0.22% expense ratio, which is higher than PREIX's 0.15% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

TBLEX vs. PREIX - Dividend Comparison

TBLEX's dividend yield for the trailing twelve months is around 3.04%, more than PREIX's 2.14% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PREIX T. Rowe Price Equity Index 500 Fund	2.14%	2.32%	1.17%	1.32%	1.50%	1.56%	1.97%	2.13%	2.60%	1.30%	2.03%	2.02%
TBLEX T. Rowe Price Retirement Blend 2025 Fund	3.04%	3.25%	2.73%	2.41%	3.09%	2.07%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both TBLEX and PREIX in my portfolio?

With a correlation of 0.93, TBLEX and PREIX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, TBLEX or PREIX?

PREIX has higher volatility (4.68%) compared to TBLEX (2.90%). In terms of maximum drawdown, TBLEX dropped -21.51% vs PREIX's -55.32%.

Which has better risk-adjusted returns?

TBLEX currently has the higher Sharpe Ratio (2.23 vs 2.13), 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.