IISBX vs. DFCFX

Last updated Jul 11, 2026

IISBX (Voya Short Term Bond Fund) and DFCFX (DFA Two-Year Fixed Income Portfolio) are both Short-Term Bond funds. Over the past 10 years, IISBX returned 2.01%/yr vs 2.51%/yr for DFCFX. At a 0.31 correlation, their price movements are largely independent. IISBX charges 0.35%/yr vs 0.21%/yr for DFCFX.

Performance

IISBX vs. DFCFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Voya Short Term Bond Fund (IISBX) and DFA Two-Year Fixed Income Portfolio (DFCFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IISBX achieves a 0.82% return, which is significantly lower than DFCFX's 1.82% return. Over the past 10 years, IISBX has underperformed DFCFX with an annualized return of 2.01%, while DFCFX has yielded a comparatively higher 2.51% annualized return.

IISBX

• 1D: 0.11%
• 1M: 0.15%
• 6M: 0.92%
• YTD: 0.82%
• 1Y: 2.94%
• 3Y*: 4.46%
• 5Y*: 1.74%
• 10Y*: 2.01%

DFCFX

• 1D: 0.00%
• 1M: 0.19%
• 6M: 1.71%
• YTD: 1.82%
• 1Y: 3.82%
• 3Y*: 4.01%
• 5Y*: 3.87%
• 10Y*: 2.51%

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

IISBX vs. DFCFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IISBX Voya Short Term Bond Fund	0.82%	4.66%	4.88%	4.38%	-5.30%	0.13%	3.66%	4.68%	1.00%	1.54%
DFCFX DFA Two-Year Fixed Income Portfolio	1.82%	2.28%	5.33%	4.92%	-3.28%	8.60%	0.57%	2.65%	1.78%	0.92%

Correlation

The correlation between IISBX and DFCFX is 0.11, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.11
Correlation (3Y) Calculated over the trailing 3-year period	0.05
Correlation (5Y) Calculated over the trailing 5-year period	0.35
Correlation (10Y) Calculated over the trailing 10-year period	0.31
Correlation (All Time) Calculated using the full available price history since Jan 2, 2013	0.31

Over the past year, the correlation between IISBX and DFCFX has dropped to 0.11 - well below their long-term average of 0.31, suggesting their price drivers have been diverging.

Return for Risk

IISBX vs. DFCFX — Risk / Return Rank

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

IISBX

IISBX Risk / Return Rank: 58
IISBX Sharpe Ratio Rank: 45
IISBX Sortino Ratio Rank: 69
IISBX Omega Ratio Rank: 68
IISBX Calmar Ratio Rank: 58
IISBX Martin Ratio Rank: 51

DFCFX

DFCFX Risk / Return Rank: 100
DFCFX Sharpe Ratio Rank: 100
DFCFX Sortino Ratio Rank: 100
DFCFX Omega Ratio Rank: 100
DFCFX Calmar Ratio Rank: 100
DFCFX Martin Ratio Rank: 100

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.

IISBX vs. DFCFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Voya Short Term Bond Fund (IISBX) and DFA Two-Year Fixed Income Portfolio (DFCFX). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	IISBX	DFCFX	Difference
Sharpe ratio: Return per unit of total volatility	1.50	5.75	-4.25
Sortino ratio: Return per unit of downside risk	2.61	13.86	-11.25
Omega ratio: Gain probability vs. loss probability	1.34	7.54	-6.20
Calmar ratio: Return relative to maximum drawdown	2.34	19.30	-16.97
Martin ratio: Return relative to average drawdown	8.28	152.36	-144.08

IISBX vs. DFCFX - Sharpe Ratio Comparison

The current IISBX Sharpe Ratio is 1.50, which is lower than the DFCFX Sharpe Ratio of 5.75. The chart below compares the historical Sharpe Ratios of IISBX and DFCFX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

IISBX vs. DFCFX - Drawdown Comparison

The maximum IISBX drawdown since its inception was -8.22%, which is greater than DFCFX's maximum drawdown of -4.27%. Use the drawdown chart below to compare losses from any high point for IISBX and DFCFX.

Drawdown Indicators

	IISBX	DFCFX	Difference
Max Drawdown Largest peak-to-trough decline	-8.22%	-4.27%	-3.95%
Max Drawdown (1Y) Largest decline over 1 year	-1.38%	-0.21%	-1.17%
Max Drawdown (3Y) Largest decline over 3 years	-1.38%	-1.33%	-0.05%
Max Drawdown (5Y) Largest decline over 5 years	-7.40%	-4.27%	-3.13%
Max Drawdown (10Y) Largest decline over 10 years	-8.22%	-4.27%	-3.95%
Current Drawdown Current decline from peak	-0.11%	-0.10%	-0.01%
Average Drawdown Average peak-to-trough decline	-0.89%	-0.26%	-0.63%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.38%	0.03%	+0.35%

Volatility

IISBX vs. DFCFX - Volatility Comparison

Voya Short Term Bond Fund (IISBX) has a higher volatility of 0.59% compared to DFA Two-Year Fixed Income Portfolio (DFCFX) at 0.38%. This indicates that IISBX's price experiences larger fluctuations and is considered to be riskier than DFCFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IISBX	DFCFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.59%	0.38%	+0.21%
Volatility (6M) Calculated over the trailing 6-month period	1.66%	0.53%	+1.13%
Volatility (1Y) Calculated over the trailing 1-year period	2.15%	0.69%	+1.46%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.47%	4.39%	-1.92%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.25%	3.13%	-0.88%

IISBX vs. DFCFX - Expense Ratio Comparison

IISBX has a 0.35% expense ratio, which is higher than DFCFX's 0.21% expense ratio.

Dividends

IISBX vs. DFCFX - Dividend Comparison

IISBX's dividend yield for the trailing twelve months is around 3.78%, less than DFCFX's 3.86% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DFCFX DFA Two-Year Fixed Income Portfolio	3.86%	2.16%	4.90%	3.43%	1.32%	8.29%	0.67%	2.22%	1.87%	1.22%	0.79%	0.53%
IISBX Voya Short Term Bond Fund	3.78%	3.46%	4.75%	2.96%	1.61%	1.35%	2.25%	2.40%	2.54%	1.84%	1.90%	1.88%

Frequently Asked Questions

Can I hold both IISBX and DFCFX in my portfolio?

IISBX and DFCFX have a correlation of 0.11, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IISBX or DFCFX?

IISBX has higher volatility (0.59%) compared to DFCFX (0.38%). In terms of maximum drawdown, IISBX dropped -8.22% vs DFCFX's -4.27%.

Which has better risk-adjusted returns?

DFCFX currently has the higher Sharpe Ratio (5.75 vs 1.50), 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.