TBLJX vs. PREIX

Last updated Jun 26, 2026

TBLJX (T. Rowe Price Retirement Blend 2040 Fund) and PREIX (T. Rowe Price Equity Index 500 Fund) are both mutual funds - TBLJX 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, TBLJX returned 17.17%/yr vs 20.55%/yr for PREIX. Their correlation of 0.94 suggests significant overlap in exposure. TBLJX charges 0.24%/yr vs 0.15%/yr for PREIX.

Performance

TBLJX vs. PREIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in T. Rowe Price Retirement Blend 2040 Fund (TBLJX) 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, TBLJX achieves a 8.80% return, which is significantly higher than PREIX's 8.00% return.

TBLJX

• 1D: 0.07%
• 1M: -1.10%
• YTD: 8.80%
• 6M: 7.93%
• 1Y: 21.11%
• 3Y*: 17.17%
• 5Y*: —
• 10Y*: —

PREIX

• 1D: -0.09%
• 1M: -2.05%
• YTD: 8.00%
• 6M: 6.67%
• 1Y: 22.01%
• 3Y*: 20.55%
• 5Y*: 12.85%
• 10Y*: 15.38%

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

TBLJX vs. PREIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
TBLJX T. Rowe Price Retirement Blend 2040 Fund	8.80%	18.81%	13.87%	20.14%	-17.93%	3.89%
PREIX T. Rowe Price Equity Index 500 Fund	8.00%	17.66%	24.78%	26.07%	-18.27%	8.42%

Correlation

The correlation between TBLJX and PREIX is 0.95, 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	0.95
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (All Time) Calculated using the full available price history since Jul 30, 2021	0.94

The correlation between TBLJX and PREIX has been stable across timeframes, ranging from 0.93 to 0.95 - a consistent structural relationship.

Return for Risk

TBLJX vs. PREIX — Risk / Return Rank

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

TBLJX

TBLJX Risk / Return Rank: 58
TBLJX Sharpe Ratio Rank: 57
TBLJX Sortino Ratio Rank: 55
TBLJX Omega Ratio Rank: 57
TBLJX Calmar Ratio Rank: 56
TBLJX Martin Ratio Rank: 65

PREIX

PREIX Risk / Return Rank: 54
PREIX Sharpe Ratio Rank: 51
PREIX Sortino Ratio Rank: 47
PREIX Omega Ratio Rank: 49
PREIX Calmar Ratio Rank: 54
PREIX Martin Ratio Rank: 67

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.

TBLJX vs. PREIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price Retirement Blend 2040 Fund (TBLJX) 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.

	TBLJX	PREIX	Difference
Sharpe ratio: Return per unit of total volatility	1.81	1.77	+0.04
Sortino ratio: Return per unit of downside risk	2.51	2.42	+0.09
Omega ratio: Gain probability vs. loss probability	1.33	1.32	+0.01
Calmar ratio: Return relative to maximum drawdown	2.43	2.47	-0.04
Martin ratio: Return relative to average drawdown	10.56	11.04	-0.48

TBLJX vs. PREIX - Sharpe Ratio Comparison

The current TBLJX Sharpe Ratio is 1.81, which is comparable to the PREIX Sharpe Ratio of 1.77. The chart below compares the historical Sharpe Ratios of TBLJX 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

TBLJX vs. PREIX - Drawdown Comparison

The maximum TBLJX drawdown since its inception was -25.86%, smaller than the maximum PREIX drawdown of -55.32%. Use the drawdown chart below to compare losses from any high point for TBLJX and PREIX.

Drawdown Indicators

	TBLJX	PREIX	Difference
Max Drawdown Largest peak-to-trough decline	-25.86%	-55.32%	+29.46%
Max Drawdown (1Y) Largest decline over 1 year	-8.63%	-8.93%	+0.30%
Max Drawdown (3Y) Largest decline over 3 years	-14.55%	-18.78%	+4.23%
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	-2.03%	-3.23%	+1.20%
Average Drawdown Average peak-to-trough decline	-6.40%	-8.71%	+2.31%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.98%	2.00%	-0.02%

Volatility

TBLJX vs. PREIX - Volatility Comparison

T. Rowe Price Retirement Blend 2040 Fund (TBLJX) and T. Rowe Price Equity Index 500 Fund (PREIX) have volatilities of 4.71% and 4.88%, 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

	TBLJX	PREIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.71%	4.88%	-0.17%
Volatility (6M) Calculated over the trailing 6-month period	9.68%	9.90%	-0.22%
Volatility (1Y) Calculated over the trailing 1-year period	11.66%	12.55%	-0.89%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	14.50%	17.10%	-2.60%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	14.50%	18.12%	-3.62%

TBLJX vs. PREIX - Expense Ratio Comparison

TBLJX has a 0.24% 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

TBLJX vs. PREIX - Dividend Comparison

TBLJX's dividend yield for the trailing twelve months is around 2.37%, more than PREIX's 2.17% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PREIX T. Rowe Price Equity Index 500 Fund	2.17%	2.32%	1.17%	1.32%	1.50%	1.56%	1.97%	2.13%	2.60%	1.30%	2.03%	2.02%
TBLJX T. Rowe Price Retirement Blend 2040 Fund	2.37%	2.58%	2.05%	2.19%	1.97%	2.17%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both TBLJX and PREIX in my portfolio?

With a correlation of 0.95, TBLJX 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, TBLJX or PREIX?

PREIX has higher volatility (4.88%) compared to TBLJX (4.71%). In terms of maximum drawdown, TBLJX dropped -25.86% vs PREIX's -55.32%.

Which has better risk-adjusted returns?

TBLJX currently has the higher Sharpe Ratio (1.81 vs 1.77), 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.