VWAHX vs. TRBUX

Last updated Jun 5, 2026

VWAHX (Vanguard High-Yield Tax-Exempt Fund Investor Shares) and TRBUX (T. Rowe Price Ultra Short-Term Bond Fund) are both mutual funds - VWAHX is a Municipal Bonds fund managed by Vanguard, while TRBUX is a Ultrashort Bond fund managed by T. Rowe Price. Over the past 10 years, VWAHX returned 3.06%/yr vs 3.31%/yr for TRBUX. At a 0.30 correlation, their price movements are largely independent. VWAHX charges 0.17%/yr vs 0.31%/yr for TRBUX.

Performance

VWAHX vs. TRBUX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard High-Yield Tax-Exempt Fund Investor Shares (VWAHX) and T. Rowe Price Ultra Short-Term Bond Fund (TRBUX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VWAHX achieves a 2.30% return, which is significantly higher than TRBUX's 1.59% return. Over the past 10 years, VWAHX has underperformed TRBUX with an annualized return of 3.06%, while TRBUX has yielded a comparatively higher 3.31% annualized return.

VWAHX

• 1D: 0.00%
• 1M: 1.01%
• YTD: 2.30%
• 6M: 2.65%
• 1Y: 8.46%
• 3Y*: 5.46%
• 5Y*: 1.56%
• 10Y*: 3.06%

TRBUX

• 1D: 0.00%
• 1M: 0.36%
• YTD: 1.59%
• 6M: 2.58%
• 1Y: 6.43%
• 3Y*: 6.82%
• 5Y*: 4.32%
• 10Y*: 3.31%

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

VWAHX vs. TRBUX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VWAHX Vanguard High-Yield Tax-Exempt Fund Investor Shares	2.30%	4.96%	3.98%	8.39%	-11.76%	3.36%	5.39%	9.48%	1.31%	7.86%
TRBUX T. Rowe Price Ultra Short-Term Bond Fund	1.59%	6.88%	7.88%	6.99%	-1.28%	0.22%	3.11%	3.60%	1.88%	1.83%

Correlation

The correlation between VWAHX and TRBUX is 0.23, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.23
Correlation (3Y) Calculated over the trailing 3-year period	0.27
Correlation (5Y) Calculated over the trailing 5-year period	0.29
Correlation (10Y) Calculated over the trailing 10-year period	0.30
Correlation (All Time) Calculated using the full available price history since Oct 4, 2013	0.30

Return for Risk

VWAHX vs. TRBUX — Risk / Return Rank

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

VWAHX

VWAHX Risk / Return Rank: 74
VWAHX Sharpe Ratio Rank: 83
VWAHX Sortino Ratio Rank: 89
VWAHX Omega Ratio Rank: 92
VWAHX Calmar Ratio Rank: 56
VWAHX Martin Ratio Rank: 52

TRBUX

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

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.

VWAHX vs. TRBUX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard High-Yield Tax-Exempt Fund Investor Shares (VWAHX) and T. Rowe Price Ultra Short-Term Bond Fund (TRBUX). 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.

	VWAHX	TRBUX	Difference
Sharpe ratio: Return per unit of total volatility	2.72	3.90	-1.18
Sortino ratio: Return per unit of downside risk	4.41	10.21	-5.80
Omega ratio: Gain probability vs. loss probability	1.70	4.18	-2.47
Calmar ratio: Return relative to maximum drawdown	2.89	16.93	-14.04
Martin ratio: Return relative to average drawdown	10.50	65.96	-55.46
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VWAHX vs. TRBUX - Sharpe Ratio Comparison

The current VWAHX Sharpe Ratio is 2.72, which is lower than the TRBUX Sharpe Ratio of 3.90. The chart below compares the historical Sharpe Ratios of VWAHX and TRBUX, 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

	VWAHX	TRBUX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.72	3.90	-1.18
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.33	2.60	-2.27
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.66	2.21	-1.55
Sharpe Ratio (All Time) Calculated using the full available price history	0.65	1.96	-1.31

Drawdowns

VWAHX vs. TRBUX - Drawdown Comparison

The maximum VWAHX drawdown since its inception was -40.26%, which is greater than TRBUX's maximum drawdown of -4.15%. Use the drawdown chart below to compare losses from any high point for VWAHX and TRBUX.

Drawdown Indicators

	VWAHX	TRBUX	Difference
Max Drawdown Largest peak-to-trough decline	-40.26%	-4.15%	-36.11%
Max Drawdown (1Y) Largest decline over 1 year	-3.05%	-0.39%	-2.66%
Max Drawdown (3Y) Largest decline over 3 years	-7.12%	-0.78%	-6.34%
Max Drawdown (5Y) Largest decline over 5 years	-17.32%	-2.68%	-14.64%
Max Drawdown (10Y) Largest decline over 10 years	-17.32%	-4.15%	-13.17%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-6.93%	-0.21%	-6.72%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.84%	0.10%	+0.74%

Volatility

VWAHX vs. TRBUX - Volatility Comparison

Vanguard High-Yield Tax-Exempt Fund Investor Shares (VWAHX) has a higher volatility of 1.26% compared to T. Rowe Price Ultra Short-Term Bond Fund (TRBUX) at 0.64%. This indicates that VWAHX's price experiences larger fluctuations and is considered to be riskier than TRBUX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VWAHX	TRBUX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.26%	0.64%	+0.62%
Volatility (6M) Calculated over the trailing 6-month period	2.38%	1.18%	+1.20%
Volatility (1Y) Calculated over the trailing 1-year period	3.24%	1.71%	+1.53%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.80%	1.68%	+3.12%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.64%	1.50%	+3.14%

VWAHX vs. TRBUX - Expense Ratio Comparison

VWAHX has a 0.17% expense ratio, which is lower than TRBUX's 0.31% expense ratio.

Dividends

VWAHX vs. TRBUX - Dividend Comparison

VWAHX's dividend yield for the trailing twelve months is around 4.05%, less than TRBUX's 6.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
TRBUX T. Rowe Price Ultra Short-Term Bond Fund	6.03%	6.23%	6.36%	4.48%	1.53%	1.21%	1.86%	2.73%	2.47%	1.62%	1.18%	0.81%
VWAHX Vanguard High-Yield Tax-Exempt Fund Investor Shares	4.05%	4.95%	4.38%	3.53%	3.36%	2.98%	3.31%	3.94%	3.78%	3.68%	3.75%	3.67%

Frequently Asked Questions

Can I hold both VWAHX and TRBUX in my portfolio?

VWAHX and TRBUX have a correlation of 0.23, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VWAHX or TRBUX?

VWAHX has higher volatility (1.26%) compared to TRBUX (0.64%). In terms of maximum drawdown, VWAHX dropped -40.26% vs TRBUX's -4.15%.

Which has better risk-adjusted returns?

TRBUX currently has the higher Sharpe Ratio (3.90 vs 2.72), 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.