TRBFX vs. PREIX
TRBFX (T. Rowe Price Limited Duration Inflation Focused Bond Fund) and PREIX (T. Rowe Price Equity Index 500 Fund) are both mutual funds - TRBFX is a Inflation-Protected Bonds fund managed by T. Rowe Price, while PREIX is a Large Cap Blend Equities fund managed by T. Rowe Price. Over the past 10 years, TRBFX returned 2.93%/yr vs 15.42%/yr for PREIX. At a 0.07 correlation, their price movements are largely independent. TRBFX charges 0.41%/yr vs 0.15%/yr for PREIX.
Performance
TRBFX vs. PREIX - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, TRBFX achieves a 1.76% return, which is significantly lower than PREIX's 11.61% return. Over the past 10 years, TRBFX has underperformed PREIX with an annualized return of 2.93%, while PREIX has yielded a comparatively higher 15.42% annualized return.
TRBFX
- 1D
- 0.00%
- 1M
- -0.11%
- YTD
- 1.76%
- 6M
- 1.77%
- 1Y
- 4.67%
- 3Y*
- 4.95%
- 5Y*
- 2.52%
- 10Y*
- 2.93%
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%
TRBFX vs. PREIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
TRBFX T. Rowe Price Limited Duration Inflation Focused Bond Fund | 1.76% | 6.34% | 4.60% | 3.01% | -5.19% | 5.77% | 5.65% | 6.53% | 0.28% | 0.80% |
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 TRBFX and PREIX is -0.03, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | -0.03 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.07 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.12 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.08 |
Correlation (All Time) Calculated using the full available price history since Oct 7, 2015 | 0.07 |
The correlation between TRBFX and PREIX shifts across timeframes, from -0.03 (1 year) to 0.12 (5 years), reflecting how their relationship changes across market environments.
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
TRBFX vs. PREIX — Risk / Return Rank
TRBFX
PREIX
TRBFX vs. PREIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price Limited Duration Inflation Focused Bond Fund (TRBFX) 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.
| TRBFX | PREIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.59 | ||
| Sortino ratioReturn per unit of downside risk | -2.04 | ||
| Omega ratioGain probability vs. loss probability | 1.38 | 1.45 | -0.08 |
| Calmar ratioReturn relative to maximum drawdown | 1.32 | 3.32 | -2.00 |
| Martin ratioReturn relative to average drawdown | 2.66 | 15.47 | -12.81 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Loading charts...
Sharpe Ratios by Period
| TRBFX | PREIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.91 | 2.50 | -1.59 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.49 | 0.83 | -0.34 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.73 | 0.85 | -0.12 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.72 | 0.61 | +0.11 |
Drawdowns
TRBFX vs. PREIX - Drawdown Comparison
The maximum TRBFX drawdown since its inception was -7.33%, smaller than the maximum PREIX drawdown of -55.32%. Use the drawdown chart below to compare losses from any high point for TRBFX and PREIX.
Loading charts...
Drawdown Indicators
| TRBFX | PREIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -7.33% | -55.32% | +47.99% |
Max Drawdown (1Y)Largest decline over 1 year | -3.48% | -8.93% | +5.45% |
Max Drawdown (3Y)Largest decline over 3 years | -3.51% | -18.78% | +15.27% |
Max Drawdown (5Y)Largest decline over 5 years | -7.33% | -24.60% | +17.27% |
Max Drawdown (10Y)Largest decline over 10 years | -7.33% | -33.81% | +26.48% |
Current DrawdownCurrent decline from peak | -1.36% | 0.00% | -1.36% |
Average DrawdownAverage peak-to-trough decline | -1.42% | -8.73% | +7.31% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.70% | 1.91% | -0.21% |
Volatility
TRBFX vs. PREIX - Volatility Comparison
The current volatility for T. Rowe Price Limited Duration Inflation Focused Bond Fund (TRBFX) is 0.61%, while T. Rowe Price Equity Index 500 Fund (PREIX) has a volatility of 2.83%. This indicates that TRBFX 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.
Loading charts...
Volatility by Period
| TRBFX | PREIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.61% | 2.83% | -2.22% |
Volatility (6M)Calculated over the trailing 6-month period | 4.76% | 8.98% | -4.22% |
Volatility (1Y)Calculated over the trailing 1-year period | 5.06% | 11.87% | -6.81% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.15% | 17.00% | -11.85% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.01% | 18.11% | -14.10% |
TRBFX vs. PREIX - Expense Ratio Comparison
TRBFX has a 0.41% expense ratio, which is higher than PREIX's 0.15% expense ratio.
Dividends
TRBFX vs. PREIX - Dividend Comparison
TRBFX's dividend yield for the trailing twelve months is around 4.79%, more than PREIX's 2.10% yield.
| 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% |
TRBFX T. Rowe Price Limited Duration Inflation Focused Bond Fund | 4.79% | 4.95% | 4.48% | 3.64% | 6.11% | 4.99% | 1.38% | 3.27% | 2.34% | 1.61% | 1.10% | 0.00% |
Frequently Asked Questions
TRBFX and PREIX have a correlation of -0.03, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
PREIX has higher volatility (2.83%) compared to TRBFX (0.61%). In terms of maximum drawdown, TRBFX dropped -7.33% vs PREIX's -55.32%.
PREIX currently has the higher Sharpe Ratio (2.50 vs 0.91), 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.
Find the right allocation for TRBFX and PREIX
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer