VTIBX vs. SPSK

Last updated Jun 24, 2026

VTIBX (Vanguard Total International Bond Index Fund) and SPSK (SP Funds Dow Jones Global Sukuk ETF) are both Global Bonds funds. Over the past 5 years, VTIBX returned 0.43%/yr vs 0.89%/yr for SPSK. At a 0.37 correlation, their price movements are largely independent. VTIBX charges 0.13%/yr vs 0.50%/yr for SPSK.

Performance

VTIBX vs. SPSK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Total International Bond Index Fund (VTIBX) and SP Funds Dow Jones Global Sukuk ETF (SPSK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VTIBX achieves a 0.91% return, which is significantly higher than SPSK's 0.14% return.

VTIBX

• 1D: -0.10%
• 1M: 0.96%
• YTD: 0.91%
• 6M: 1.12%
• 1Y: 2.14%
• 3Y*: 4.23%
• 5Y*: 0.43%
• 10Y*: 1.67%

SPSK

• 1D: 0.11%
• 1M: 0.48%
• YTD: 0.14%
• 6M: 0.23%
• 1Y: 3.45%
• 3Y*: 4.06%
• 5Y*: 0.89%
• 10Y*: —

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

VTIBX vs. SPSK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
VTIBX Vanguard Total International Bond Index Fund	0.91%	2.98%	3.84%	8.86%	-12.97%	-2.27%	4.56%	-0.26%
SPSK SP Funds Dow Jones Global Sukuk ETF	0.14%	6.16%	2.95%	3.95%	-7.75%	-1.30%	3.67%	0.25%

Correlation

The correlation between VTIBX and SPSK is 0.43, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.43
Correlation (3Y) Calculated over the trailing 3-year period	0.36
Correlation (5Y) Calculated over the trailing 5-year period	0.39
Correlation (All Time) Calculated using the full available price history since Dec 30, 2019	0.37

Return for Risk

VTIBX vs. SPSK — Risk / Return Rank

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

VTIBX

VTIBX Risk / Return Rank: 8
VTIBX Sharpe Ratio Rank: 9
VTIBX Sortino Ratio Rank: 8
VTIBX Omega Ratio Rank: 8
VTIBX Calmar Ratio Rank: 8
VTIBX Martin Ratio Rank: 8

SPSK

SPSK Risk / Return Rank: 26
SPSK Sharpe Ratio Rank: 26
SPSK Sortino Ratio Rank: 25
SPSK Omega Ratio Rank: 23
SPSK Calmar Ratio Rank: 26
SPSK Martin Ratio Rank: 29

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.

VTIBX vs. SPSK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Total International Bond Index Fund (VTIBX) and SP Funds Dow Jones Global Sukuk ETF (SPSK). 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.

	VTIBX	SPSK	Difference
Sharpe ratio: Return per unit of total volatility	0.71	0.91	-0.20
Sortino ratio: Return per unit of downside risk	1.03	1.33	-0.30
Omega ratio: Gain probability vs. loss probability	1.13	1.16	-0.03
Calmar ratio: Return relative to maximum drawdown	0.76	1.22	-0.45
Martin ratio: Return relative to average drawdown	2.05	3.96	-1.91

VTIBX vs. SPSK - Sharpe Ratio Comparison

The current VTIBX Sharpe Ratio is 0.71, which is comparable to the SPSK Sharpe Ratio of 0.91. The chart below compares the historical Sharpe Ratios of VTIBX and SPSK, 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

VTIBX vs. SPSK - Drawdown Comparison

The maximum VTIBX drawdown since its inception was -16.15%, which is greater than SPSK's maximum drawdown of -12.83%. Use the drawdown chart below to compare losses from any high point for VTIBX and SPSK.

Drawdown Indicators

	VTIBX	SPSK	Difference
Max Drawdown Largest peak-to-trough decline	-16.15%	-12.83%	-3.32%
Max Drawdown (1Y) Largest decline over 1 year	-2.95%	-2.85%	-0.10%
Max Drawdown (3Y) Largest decline over 3 years	-2.95%	-3.17%	+0.22%
Max Drawdown (5Y) Largest decline over 5 years	-15.81%	-12.45%	-3.36%
Max Drawdown (10Y) Largest decline over 10 years	-16.15%	—	—
Current Drawdown Current decline from peak	-0.95%	-0.92%	-0.03%
Average Drawdown Average peak-to-trough decline	-3.07%	-3.80%	+0.73%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.09%	0.87%	+0.22%

Volatility

VTIBX vs. SPSK - Volatility Comparison

Vanguard Total International Bond Index Fund (VTIBX) and SP Funds Dow Jones Global Sukuk ETF (SPSK) have volatilities of 0.95% and 0.91%, 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

	VTIBX	SPSK	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.95%	0.91%	+0.04%
Volatility (6M) Calculated over the trailing 6-month period	2.70%	2.50%	+0.20%
Volatility (1Y) Calculated over the trailing 1-year period	3.19%	3.84%	-0.65%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.50%	5.28%	-0.78%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.66%	5.45%	-1.79%

VTIBX vs. SPSK - Expense Ratio Comparison

VTIBX has a 0.13% expense ratio, which is lower than SPSK's 0.50% expense ratio.

Dividends

VTIBX vs. SPSK - Dividend Comparison

VTIBX's dividend yield for the trailing twelve months is around 4.41%, more than SPSK's 4.23% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SPSK SP Funds Dow Jones Global Sukuk ETF	4.23%	3.63%	3.53%	2.95%	2.22%	2.56%	1.78%	0.00%	0.00%	0.00%	0.00%	0.00%
VTIBX Vanguard Total International Bond Index Fund	4.41%	4.33%	4.31%	4.37%	1.41%	3.68%	1.06%	3.36%	2.98%	2.21%	1.76%	1.61%

Frequently Asked Questions

Can I hold both VTIBX and SPSK in my portfolio?

VTIBX and SPSK have a correlation of 0.43, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VTIBX or SPSK?

VTIBX has higher volatility (0.95%) compared to SPSK (0.91%). In terms of maximum drawdown, VTIBX dropped -16.15% vs SPSK's -12.83%.

Which has better risk-adjusted returns?

SPSK currently has the higher Sharpe Ratio (0.91 vs 0.71), 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.