IUTIX vs. VSBIX

Last updated Jun 4, 2026

IUTIX (Columbia U.S. Treasury Index Fund) and VSBIX (Vanguard Short-Term Treasury Index Fund Institutional Shares) are both Government Bonds funds. Over the past 10 years, IUTIX returned 0.72%/yr vs 1.77%/yr for VSBIX. A 0.74 correlation means they provide meaningful diversification when combined. IUTIX charges 0.16%/yr vs 0.05%/yr for VSBIX.

Performance

IUTIX vs. VSBIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Columbia U.S. Treasury Index Fund (IUTIX) and Vanguard Short-Term Treasury Index Fund Institutional Shares (VSBIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IUTIX achieves a 0.03% return, which is significantly lower than VSBIX's 0.52% return. Over the past 10 years, IUTIX has underperformed VSBIX with an annualized return of 0.72%, while VSBIX has yielded a comparatively higher 1.77% annualized return.

IUTIX

• 1D: 0.10%
• 1M: 0.32%
• YTD: 0.03%
• 6M: -0.16%
• 1Y: 3.96%
• 3Y*: 2.53%
• 5Y*: -0.59%
• 10Y*: 0.72%

VSBIX

• 1D: 0.00%
• 1M: 0.11%
• YTD: 0.52%
• 6M: 0.81%
• 1Y: 3.48%
• 3Y*: 4.29%
• 5Y*: 1.89%
• 10Y*: 1.77%

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

IUTIX vs. VSBIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IUTIX Columbia U.S. Treasury Index Fund	0.03%	6.03%	-0.01%	3.80%	-12.74%	-2.59%	7.71%	6.70%	0.60%	2.20%
VSBIX Vanguard Short-Term Treasury Index Fund Institutional Shares	0.52%	5.11%	4.37%	4.28%	-3.87%	-0.67%	3.11%	3.53%	1.52%	0.40%

Correlation

The correlation between IUTIX and VSBIX is 0.85, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.85
Correlation (3Y) Calculated over the trailing 3-year period	0.80
Correlation (5Y) Calculated over the trailing 5-year period	0.79
Correlation (10Y) Calculated over the trailing 10-year period	0.75
Correlation (All Time) Calculated using the full available price history since Nov 24, 2009	0.74

The correlation between IUTIX and VSBIX shifts across timeframes, from 0.74 (all time) to 0.85 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

IUTIX vs. VSBIX — Risk / Return Rank

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

IUTIX

IUTIX Risk / Return Rank: 13
IUTIX Sharpe Ratio Rank: 14
IUTIX Sortino Ratio Rank: 14
IUTIX Omega Ratio Rank: 13
IUTIX Calmar Ratio Rank: 13
IUTIX Martin Ratio Rank: 13

VSBIX

VSBIX Risk / Return Rank: 88
VSBIX Sharpe Ratio Rank: 84
VSBIX Sortino Ratio Rank: 92
VSBIX Omega Ratio Rank: 85
VSBIX Calmar Ratio Rank: 87
VSBIX Martin Ratio Rank: 89

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.

IUTIX vs. VSBIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Columbia U.S. Treasury Index Fund (IUTIX) and Vanguard Short-Term Treasury Index Fund Institutional Shares (VSBIX). 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.

	IUTIX	VSBIX	Difference
Sharpe ratio: Return per unit of total volatility	1.02	2.73	-1.70
Sortino ratio: Return per unit of downside risk	1.54	4.57	-3.03
Omega ratio: Gain probability vs. loss probability	1.18	1.58	-0.40
Calmar ratio: Return relative to maximum drawdown	1.23	4.28	-3.05
Martin ratio: Return relative to average drawdown	3.62	17.65	-14.03
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IUTIX vs. VSBIX - Sharpe Ratio Comparison

The current IUTIX Sharpe Ratio is 1.02, which is lower than the VSBIX Sharpe Ratio of 2.73. The chart below compares the historical Sharpe Ratios of IUTIX and VSBIX, 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

	IUTIX	VSBIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.02	2.73	-1.70
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.10	0.97	-1.08
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.14	1.16	-1.02
Sharpe Ratio (All Time) Calculated using the full available price history	0.74	1.09	-0.35

Drawdowns

IUTIX vs. VSBIX - Drawdown Comparison

The maximum IUTIX drawdown since its inception was -19.42%, which is greater than VSBIX's maximum drawdown of -5.74%. Use the drawdown chart below to compare losses from any high point for IUTIX and VSBIX.

Drawdown Indicators

	IUTIX	VSBIX	Difference
Max Drawdown Largest peak-to-trough decline	-19.42%	-5.74%	-13.68%
Max Drawdown (1Y) Largest decline over 1 year	-3.15%	-0.81%	-2.34%
Max Drawdown (3Y) Largest decline over 3 years	-5.42%	-0.81%	-4.61%
Max Drawdown (5Y) Largest decline over 5 years	-16.91%	-5.74%	-11.17%
Max Drawdown (10Y) Largest decline over 10 years	-19.42%	-5.74%	-13.68%
Current Drawdown Current decline from peak	-8.26%	-0.20%	-8.06%
Average Drawdown Average peak-to-trough decline	-3.51%	-0.59%	-2.92%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.07%	0.20%	+0.87%

Volatility

IUTIX vs. VSBIX - Volatility Comparison

Columbia U.S. Treasury Index Fund (IUTIX) has a higher volatility of 1.29% compared to Vanguard Short-Term Treasury Index Fund Institutional Shares (VSBIX) at 0.39%. This indicates that IUTIX's price experiences larger fluctuations and is considered to be riskier than VSBIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IUTIX	VSBIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.29%	0.39%	+0.90%
Volatility (6M) Calculated over the trailing 6-month period	2.70%	0.86%	+1.84%
Volatility (1Y) Calculated over the trailing 1-year period	3.80%	1.27%	+2.53%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.81%	1.95%	+3.86%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.11%	1.53%	+3.58%

IUTIX vs. VSBIX - Expense Ratio Comparison

IUTIX has a 0.16% expense ratio, which is higher than VSBIX's 0.05% 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

IUTIX vs. VSBIX - Dividend Comparison

IUTIX's dividend yield for the trailing twelve months is around 3.72%, less than VSBIX's 3.87% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IUTIX Columbia U.S. Treasury Index Fund	3.72%	3.61%	2.85%	2.40%	1.56%	1.30%	2.14%	2.06%	1.94%	1.54%	1.74%	2.00%
VSBIX Vanguard Short-Term Treasury Index Fund Institutional Shares	3.87%	3.99%	4.52%	3.31%	1.14%	0.65%	1.74%	2.28%	1.81%	1.11%	0.80%	0.74%

Frequently Asked Questions

Can I hold both IUTIX and VSBIX in my portfolio?

IUTIX and VSBIX have a correlation of 0.85, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IUTIX or VSBIX?

IUTIX has higher volatility (1.29%) compared to VSBIX (0.39%). In terms of maximum drawdown, IUTIX dropped -19.42% vs VSBIX's -5.74%.

Which has better risk-adjusted returns?

VSBIX currently has the higher Sharpe Ratio (2.73 vs 1.02), 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.