SPSK vs. VTIBX

Last updated Jun 4, 2026

SPSK (SP Funds Dow Jones Global Sukuk ETF) and VTIBX (Vanguard Total International Bond Index Fund) are both Global Bonds funds. Over the past 5 years, SPSK returned 0.83%/yr vs 0.42%/yr for VTIBX. At a 0.36 correlation, their price movements are largely independent. SPSK charges 0.50%/yr vs 0.13%/yr for VTIBX.

Performance

SPSK vs. VTIBX - Performance Comparison

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

Returns By Period

In the year-to-date period, SPSK achieves a 0.03% return, which is significantly lower than VTIBX's 0.60% return.

SPSK

• 1D: -0.22%
• 1M: 0.40%
• YTD: 0.03%
• 6M: -0.08%
• 1Y: 3.74%
• 3Y*: 3.95%
• 5Y*: 0.83%
• 10Y*: —

VTIBX

• 1D: 0.10%
• 1M: 0.97%
• YTD: 0.60%
• 6M: 0.54%
• 1Y: 2.13%
• 3Y*: 4.12%
• 5Y*: 0.42%
• 10Y*: 1.70%

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

SPSK vs. VTIBX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
SPSK SP Funds Dow Jones Global Sukuk ETF	0.03%	6.16%	2.95%	3.95%	-7.75%	-1.30%	3.67%	0.02%
VTIBX Vanguard Total International Bond Index Fund	0.60%	2.98%	3.84%	8.86%	-12.97%	-2.27%	4.56%	-0.09%

Correlation

The correlation between SPSK and VTIBX is 0.41, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.41
Correlation (3Y) Calculated over the trailing 3-year period	0.35
Correlation (5Y) Calculated over the trailing 5-year period	0.38
Correlation (All Time) Calculated using the full available price history since Dec 31, 2019	0.36

Return for Risk

SPSK vs. VTIBX — Risk / Return Rank

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

SPSK

SPSK Risk / Return Rank: 27
SPSK Sharpe Ratio Rank: 27
SPSK Sortino Ratio Rank: 26
SPSK Omega Ratio Rank: 24
SPSK Calmar Ratio Rank: 27
SPSK Martin Ratio Rank: 30

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: 7

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.

SPSK vs. VTIBX - Risk-Adjusted Trends Comparison

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

	SPSK	VTIBX	Difference
Sharpe ratio: Return per unit of total volatility	0.98	0.72	+0.26
Sortino ratio: Return per unit of downside risk	1.43	1.03	+0.40
Omega ratio: Gain probability vs. loss probability	1.17	1.13	+0.04
Calmar ratio: Return relative to maximum drawdown	1.32	0.76	+0.56
Martin ratio: Return relative to average drawdown	4.43	2.13	+2.31
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SPSK vs. VTIBX - Sharpe Ratio Comparison

The current SPSK Sharpe Ratio is 0.98, which is higher than the VTIBX Sharpe Ratio of 0.72. The chart below compares the historical Sharpe Ratios of SPSK and VTIBX, 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

	SPSK	VTIBX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.98	0.72	+0.26
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.16	0.10	+0.06
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.47	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.20	0.70	-0.50

Drawdowns

SPSK vs. VTIBX - Drawdown Comparison

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

Drawdown Indicators

	SPSK	VTIBX	Difference
Max Drawdown Largest peak-to-trough decline	-12.83%	-16.15%	+3.32%
Max Drawdown (1Y) Largest decline over 1 year	-2.85%	-2.95%	+0.10%
Max Drawdown (3Y) Largest decline over 3 years	-3.17%	-2.95%	-0.22%
Max Drawdown (5Y) Largest decline over 5 years	-12.45%	-15.81%	+3.36%
Max Drawdown (10Y) Largest decline over 10 years	—	-16.15%	—
Current Drawdown Current decline from peak	-1.03%	-1.26%	+0.23%
Average Drawdown Average peak-to-trough decline	-3.83%	-3.07%	-0.76%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.84%	1.05%	-0.21%

Volatility

SPSK vs. VTIBX - Volatility Comparison

The current volatility for SP Funds Dow Jones Global Sukuk ETF (SPSK) is 0.96%, while Vanguard Total International Bond Index Fund (VTIBX) has a volatility of 1.42%. This indicates that SPSK experiences smaller price fluctuations and is considered to be less risky than VTIBX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SPSK	VTIBX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.96%	1.42%	-0.46%
Volatility (6M) Calculated over the trailing 6-month period	2.46%	2.63%	-0.17%
Volatility (1Y) Calculated over the trailing 1-year period	3.84%	3.12%	+0.72%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.29%	4.49%	+0.80%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.46%	3.66%	+1.80%

SPSK vs. VTIBX - Expense Ratio Comparison

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

Dividends

SPSK vs. VTIBX - Dividend Comparison

SPSK's dividend yield for the trailing twelve months is around 4.24%, less than VTIBX's 4.43% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SPSK SP Funds Dow Jones Global Sukuk ETF	4.24%	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	4.43%	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 SPSK and VTIBX in my portfolio?

SPSK and VTIBX have a correlation of 0.41, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SPSK or VTIBX?

VTIBX has higher volatility (1.42%) compared to SPSK (0.96%). In terms of maximum drawdown, SPSK dropped -12.83% vs VTIBX's -16.15%.

Which has better risk-adjusted returns?

SPSK currently has the higher Sharpe Ratio (0.98 vs 0.72), 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.