DFIHX vs. PRWBX

Last updated Jun 3, 2026

DFIHX (DFA One Year Fixed Income Portfolio) and PRWBX (T. Rowe Price Short-Term Bond Fund) are both mutual funds - DFIHX is a Ultrashort Bond fund managed by Dimensional, while PRWBX is a Short-Term Bond fund managed by T. Rowe Price. Over the past 10 years, DFIHX returned 1.98%/yr vs 2.60%/yr for PRWBX. At a 0.25 correlation, their price movements are largely independent. DFIHX charges 0.13%/yr vs 0.43%/yr for PRWBX.

Performance

DFIHX vs. PRWBX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in DFA One Year Fixed Income Portfolio (DFIHX) and T. Rowe Price Short-Term Bond Fund (PRWBX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DFIHX achieves a 1.52% return, which is significantly higher than PRWBX's 0.95% return. Over the past 10 years, DFIHX has underperformed PRWBX with an annualized return of 1.98%, while PRWBX has yielded a comparatively higher 2.60% annualized return.

DFIHX

• 1D: 0.00%
• 1M: 0.30%
• YTD: 1.52%
• 6M: 1.93%
• 1Y: 3.65%
• 3Y*: 4.46%
• 5Y*: 2.76%
• 10Y*: 1.98%

PRWBX

• 1D: -0.22%
• 1M: 0.49%
• YTD: 0.95%
• 6M: 1.92%
• 1Y: 5.91%
• 3Y*: 5.92%
• 5Y*: 2.76%
• 10Y*: 2.60%

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

DFIHX vs. PRWBX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
DFIHX DFA One Year Fixed Income Portfolio	1.52%	3.41%	5.41%	4.98%	-1.19%	-0.19%	0.62%	2.44%	1.87%	0.94%
PRWBX T. Rowe Price Short-Term Bond Fund	0.95%	7.22%	6.22%	5.54%	-4.99%	-0.23%	4.56%	4.33%	1.38%	1.33%

Correlation

The correlation between DFIHX and PRWBX is 0.05, 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	0.05
Correlation (3Y) Calculated over the trailing 3-year period	0.04
Correlation (5Y) Calculated over the trailing 5-year period	0.28
Correlation (10Y) Calculated over the trailing 10-year period	0.23
Correlation (All Time) Calculated using the full available price history since Jan 3, 1986	0.25

Over the past year, the correlation between DFIHX and PRWBX has dropped to 0.05 - well below their long-term average of 0.25, suggesting their price drivers have been diverging.

Return for Risk

DFIHX vs. PRWBX — Risk / Return Rank

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

DFIHX

DFIHX Risk / Return Rank: 99
DFIHX Sharpe Ratio Rank: 99
DFIHX Sortino Ratio Rank: 99
DFIHX Omega Ratio Rank: 100
DFIHX Calmar Ratio Rank: 98
DFIHX Martin Ratio Rank: 99

PRWBX

PRWBX Risk / Return Rank: 92
PRWBX Sharpe Ratio Rank: 80
PRWBX Sortino Ratio Rank: 93
PRWBX Omega Ratio Rank: 95
PRWBX Calmar Ratio Rank: 96
PRWBX Martin Ratio Rank: 96

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.

DFIHX vs. PRWBX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for DFA One Year Fixed Income Portfolio (DFIHX) and T. Rowe Price Short-Term Bond Fund (PRWBX). 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.

	DFIHX	PRWBX	Difference
Sharpe ratio Return per unit of total volatility	5.28	2.61	+2.67
Sortino ratio Return per unit of downside risk	9.19	4.72	+4.46
Omega ratio Gain probability vs. loss probability	7.71	1.81	+5.90
Calmar ratio Return relative to maximum drawdown	9.56	6.09	+3.46
Martin ratio Return relative to average drawdown	58.56	23.65	+34.91
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

DFIHX vs. PRWBX - Sharpe Ratio Comparison

The current DFIHX Sharpe Ratio is 5.28, which is higher than the PRWBX Sharpe Ratio of 2.61. The chart below compares the historical Sharpe Ratios of DFIHX and PRWBX, 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

	DFIHX	PRWBX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	5.28	2.61	+2.67
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	2.78	1.09	+1.69
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	2.50	1.20	+1.30
Sharpe Ratio (All Time) Calculated using the full available price history	1.52	1.41	+0.11

Drawdowns

DFIHX vs. PRWBX - Drawdown Comparison

The maximum DFIHX drawdown since its inception was -2.53%, smaller than the maximum PRWBX drawdown of -7.78%. Use the drawdown chart below to compare losses from any high point for DFIHX and PRWBX.

Drawdown Indicators

	DFIHX	PRWBX	Difference
Max Drawdown Largest peak-to-trough decline	-2.53%	-7.78%	+5.25%
Max Drawdown (1Y) Largest decline over 1 year	-0.39%	-1.07%	+0.68%
Max Drawdown (3Y) Largest decline over 3 years	-0.49%	-1.07%	+0.58%
Max Drawdown (5Y) Largest decline over 5 years	-2.26%	-7.29%	+5.03%
Max Drawdown (10Y) Largest decline over 10 years	-2.26%	-7.29%	+5.03%
Current Drawdown Current decline from peak	0.00%	-0.22%	+0.22%
Average Drawdown Average peak-to-trough decline	-0.15%	-0.95%	+0.80%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.06%	0.28%	-0.22%

Volatility

DFIHX vs. PRWBX - Volatility Comparison

The current volatility for DFA One Year Fixed Income Portfolio (DFIHX) is 0.16%, while T. Rowe Price Short-Term Bond Fund (PRWBX) has a volatility of 0.87%. This indicates that DFIHX experiences smaller price fluctuations and is considered to be less risky than PRWBX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DFIHX	PRWBX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.16%	0.87%	-0.71%
Volatility (6M) Calculated over the trailing 6-month period	0.43%	1.71%	-1.28%
Volatility (1Y) Calculated over the trailing 1-year period	0.72%	2.33%	-1.61%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.00%	2.57%	-1.57%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.80%	2.19%	-1.39%

DFIHX vs. PRWBX - Expense Ratio Comparison

DFIHX has a 0.13% expense ratio, which is lower than PRWBX's 0.43% expense ratio.

Dividends

DFIHX vs. PRWBX - Dividend Comparison

DFIHX's dividend yield for the trailing twelve months is around 3.58%, less than PRWBX's 5.98% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DFIHX DFA One Year Fixed Income Portfolio	3.58%	3.26%	4.99%	3.37%	1.07%	0.00%	0.62%	2.12%	1.85%	1.13%	0.66%	0.51%
PRWBX T. Rowe Price Short-Term Bond Fund	5.98%	5.64%	5.12%	3.57%	1.38%	1.24%	1.92%	2.52%	2.22%	1.75%	1.58%	1.46%

Frequently Asked Questions

Can I hold both DFIHX and PRWBX in my portfolio?

DFIHX and PRWBX have a correlation of 0.05, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, DFIHX or PRWBX?

PRWBX has higher volatility (0.87%) compared to DFIHX (0.16%). In terms of maximum drawdown, DFIHX dropped -2.53% vs PRWBX's -7.78%.

Which has better risk-adjusted returns?

DFIHX currently has the higher Sharpe Ratio (5.28 vs 2.61), 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.