CMGUX vs. TRSTX

Last updated Jun 5, 2026

CMGUX (Columbia Ultra Short Term Bond Fund) and TRSTX (T. Rowe Price Ultra Short-Term Bond Fund Class I) are both Ultrashort Bond funds. Over the past 5 years, CMGUX returned 3.64%/yr vs 3.55%/yr for TRSTX. At a 0.38 correlation, their price movements are largely independent. CMGUX charges 0.25%/yr vs 0.20%/yr for TRSTX.

Performance

CMGUX vs. TRSTX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Columbia Ultra Short Term Bond Fund (CMGUX) and T. Rowe Price Ultra Short-Term Bond Fund Class I (TRSTX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with CMGUX having a 1.58% return and TRSTX slightly higher at 1.64%.

CMGUX

• 1D: 0.00%
• 1M: 0.34%
• YTD: 1.58%
• 6M: 1.99%
• 1Y: 4.49%
• 3Y*: 5.14%
• 5Y*: 3.64%
• 10Y*: 2.69%

TRSTX

• 1D: 0.00%
• 1M: 0.37%
• YTD: 1.64%
• 6M: 2.04%
• 1Y: 4.70%
• 3Y*: 5.74%
• 5Y*: 3.55%
• 10Y*: —

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

CMGUX vs. TRSTX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
CMGUX Columbia Ultra Short Term Bond Fund	1.58%	4.89%	5.31%	5.88%	0.79%	0.17%	1.78%	2.99%	1.44%
TRSTX T. Rowe Price Ultra Short-Term Bond Fund Class I	1.64%	5.34%	6.41%	5.89%	-1.20%	0.29%	3.19%	3.65%	1.60%

Correlation

The correlation between CMGUX and TRSTX is 0.10, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.10
Correlation (3Y) Calculated over the trailing 3-year period	0.27
Correlation (5Y) Calculated over the trailing 5-year period	0.33
Correlation (All Time) Calculated using the full available price history since May 1, 2018	0.38

Over the past year, the correlation between CMGUX and TRSTX has dropped to 0.10 - well below their long-term average of 0.38, suggesting their price drivers have been diverging.

Return for Risk

CMGUX vs. TRSTX — Risk / Return Rank

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

CMGUX

CMGUX Risk / Return Rank: 99
CMGUX Sharpe Ratio Rank: 95
CMGUX Sortino Ratio Rank: 100
CMGUX Omega Ratio Rank: 99
CMGUX Calmar Ratio Rank: 100
CMGUX Martin Ratio Rank: 100

TRSTX

TRSTX Risk / Return Rank: 98
TRSTX Sharpe Ratio Rank: 93
TRSTX Sortino Ratio Rank: 99
TRSTX Omega Ratio Rank: 100
TRSTX Calmar Ratio Rank: 100
TRSTX 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.

CMGUX vs. TRSTX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Columbia Ultra Short Term Bond Fund (CMGUX) and T. Rowe Price Ultra Short-Term Bond Fund Class I (TRSTX). 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.

	CMGUX	TRSTX	Difference
Sharpe ratio: Return per unit of total volatility	3.30	3.15	+0.14
Sortino ratio: Return per unit of downside risk	11.21	9.73	+1.48
Omega ratio: Gain probability vs. loss probability	3.99	4.91	-0.92
Calmar ratio: Return relative to maximum drawdown	21.44	24.71	-3.27
Martin ratio: Return relative to average drawdown	83.64	55.77	+27.86
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CMGUX vs. TRSTX - Sharpe Ratio Comparison

The current CMGUX Sharpe Ratio is 3.30, which is comparable to the TRSTX Sharpe Ratio of 3.15. The chart below compares the historical Sharpe Ratios of CMGUX and TRSTX, 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

	CMGUX	TRSTX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.30	3.15	+0.14
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	2.85	2.17	+0.68
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	2.43	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.81	2.03	-0.22

Drawdowns

CMGUX vs. TRSTX - Drawdown Comparison

The maximum CMGUX drawdown since its inception was -3.09%, smaller than the maximum TRSTX drawdown of -4.34%. Use the drawdown chart below to compare losses from any high point for CMGUX and TRSTX.

Drawdown Indicators

	CMGUX	TRSTX	Difference
Max Drawdown Largest peak-to-trough decline	-3.09%	-4.34%	+1.25%
Max Drawdown (1Y) Largest decline over 1 year	-0.22%	-0.20%	-0.02%
Max Drawdown (3Y) Largest decline over 3 years	-0.32%	-0.59%	+0.27%
Max Drawdown (5Y) Largest decline over 5 years	-0.95%	-2.58%	+1.63%
Max Drawdown (10Y) Largest decline over 10 years	-3.09%	—	—
Current Drawdown Current decline from peak	-0.11%	0.00%	-0.11%
Average Drawdown Average peak-to-trough decline	-0.13%	-0.30%	+0.17%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.06%	0.09%	-0.03%

Volatility

CMGUX vs. TRSTX - Volatility Comparison

Columbia Ultra Short Term Bond Fund (CMGUX) and T. Rowe Price Ultra Short-Term Bond Fund Class I (TRSTX) have volatilities of 0.37% and 0.37%, 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

	CMGUX	TRSTX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.37%	0.37%	0.00%
Volatility (6M) Calculated over the trailing 6-month period	0.97%	1.19%	-0.22%
Volatility (1Y) Calculated over the trailing 1-year period	1.40%	1.54%	-0.14%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.28%	1.66%	-0.38%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.11%	1.63%	-0.52%

CMGUX vs. TRSTX - Expense Ratio Comparison

CMGUX has a 0.25% expense ratio, which is higher than TRSTX's 0.20% 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

CMGUX vs. TRSTX - Dividend Comparison

CMGUX's dividend yield for the trailing twelve months is around 4.39%, less than TRSTX's 4.59% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CMGUX Columbia Ultra Short Term Bond Fund	4.39%	4.65%	4.07%	3.46%	1.34%	0.61%	1.53%	2.50%	1.99%	1.24%	0.87%	0.50%
TRSTX T. Rowe Price Ultra Short-Term Bond Fund Class I	4.59%	4.79%	5.19%	3.46%	1.61%	1.28%	1.94%	2.78%	1.98%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both CMGUX and TRSTX in my portfolio?

CMGUX and TRSTX have a correlation of 0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CMGUX or TRSTX?

TRSTX has higher volatility (0.37%) compared to CMGUX (0.37%). In terms of maximum drawdown, CMGUX dropped -3.09% vs TRSTX's -4.34%.

Which has better risk-adjusted returns?

CMGUX currently has the higher Sharpe Ratio (3.30 vs 3.15), 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.