SSFDX vs. UMMGX

Last updated Jun 3, 2026

SSFDX (State Street Aggregate Bond Index Fund) and UMMGX (Columbia Bond Fund) are both Intermediate Core Bond funds. Their correlation of 0.92 suggests significant overlap in exposure. SSFDX charges 0.23%/yr vs 0.52%/yr for UMMGX.

Performance

SSFDX vs. UMMGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in State Street Aggregate Bond Index Fund (SSFDX) and Columbia Bond Fund (UMMGX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

SSFDX

• 1D: -0.08%
• 1M: 0.11%
• YTD: 0.37%
• 6M: 0.41%
• 1Y: 5.31%
• 3Y*: 3.84%
• 5Y*: -0.04%
• 10Y*: -19.41%

UMMGX

• 1D: —
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

SSFDX vs. UMMGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SSFDX State Street Aggregate Bond Index Fund	0.37%	6.80%	1.36%	5.39%	-13.36%	-1.98%	-89.24%	8.98%	-0.20%	3.29%
UMMGX Columbia Bond Fund	0.03%	8.03%	2.06%	6.73%	-15.66%	-0.79%	9.10%	9.23%	-0.50%	3.73%

Correlation

The correlation between SSFDX and UMMGX is 0.78, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.78
Correlation (3Y) Calculated over the trailing 3-year period	0.92
Correlation (5Y) Calculated over the trailing 5-year period	0.94
Correlation (10Y) Calculated over the trailing 10-year period	0.92
Correlation (All Time) Calculated using the full available price history since Sep 23, 2014	0.92

The correlation between SSFDX and UMMGX shifts across timeframes, from 0.78 (1 year) to 0.94 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

SSFDX vs. UMMGX — Risk / Return Rank

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

SSFDX

SSFDX Risk / Return Rank: 22
SSFDX Sharpe Ratio Rank: 22
SSFDX Sortino Ratio Rank: 23
SSFDX Omega Ratio Rank: 20
SSFDX Calmar Ratio Rank: 26
SSFDX Martin Ratio Rank: 22

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.

SSFDX vs. UMMGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for State Street Aggregate Bond Index Fund (SSFDX) and Columbia Bond Fund (UMMGX). 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.

	SSFDX	UMMGX	Difference
Sharpe ratio Return per unit of total volatility	1.35	—	—
Sortino ratio Return per unit of downside risk	2.02	—	—
Omega ratio Gain probability vs. loss probability	1.24	—	—
Calmar ratio Return relative to maximum drawdown	1.90	—	—
Martin ratio Return relative to average drawdown	5.85	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	SSFDX	UMMGX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.35	—	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.01	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.61	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.56	—	—

Drawdowns

Drawdown Indicators

	SSFDX	UMMGX	Difference
Max Drawdown Largest peak-to-trough decline	-92.69%	—	—
Max Drawdown (1Y) Largest decline over 1 year	-2.75%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-6.13%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-18.19%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-92.69%	—	—
Current Drawdown Current decline from peak	-90.13%	—	—
Average Drawdown Average peak-to-trough decline	-48.02%	—	—
Ulcer Index Depth and duration of drawdowns from previous peaks	0.90%	—	—

Volatility

Volatility by Period

	SSFDX	UMMGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.30%	—	—
Volatility (6M) Calculated over the trailing 6-month period	2.66%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	3.75%	—	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.93%	—	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	31.82%	—	—

SSFDX vs. UMMGX - Expense Ratio Comparison

SSFDX has a 0.23% expense ratio, which is lower than UMMGX's 0.52% expense ratio.

Dividends

SSFDX vs. UMMGX - Dividend Comparison

SSFDX's dividend yield for the trailing twelve months is around 4.06%, more than UMMGX's 3.41% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SSFDX State Street Aggregate Bond Index Fund	4.06%	3.64%	3.59%	2.95%	2.27%	3.12%	8.84%	3.15%	2.79%	2.43%	2.19%	4.63%
UMMGX Columbia Bond Fund	3.41%	4.20%	3.70%	3.73%	2.73%	1.76%	4.77%	4.21%	2.71%	1.88%	4.66%	3.56%

Frequently Asked Questions

Can I hold both SSFDX and UMMGX in my portfolio?

SSFDX and UMMGX have a correlation of 0.78, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.