VOX vs. CLOU

Last updated Jun 4, 2026

VOX (Vanguard Communication Services ETF) and CLOU (Global X Cloud Computing ETF) are both Technology Equities funds - VOX tracks the MSCI US Investable Market Telecommunication Services 25/50 Index while CLOU tracks the Indxx Global Cloud Computing Index. Both are passively managed. Over the past 5 years, VOX returned 7.58%/yr vs -0.66%/yr for CLOU. A 0.69 correlation means they provide meaningful diversification when combined. VOX charges 0.10%/yr vs 0.68%/yr for CLOU.

Performance

VOX vs. CLOU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Communication Services ETF (VOX) and Global X Cloud Computing ETF (CLOU). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VOX achieves a -1.38% return, which is significantly lower than CLOU's 9.15% return.

VOX

• 1D: -0.84%
• 1M: -2.77%
• YTD: -1.38%
• 6M: 0.47%
• 1Y: 20.55%
• 3Y*: 24.02%
• 5Y*: 7.58%
• 10Y*: 9.30%

CLOU

• 1D: -3.71%
• 1M: 14.89%
• YTD: 9.15%
• 6M: 6.98%
• 1Y: 6.33%
• 3Y*: 9.18%
• 5Y*: -0.66%
• 10Y*: —

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

VOX vs. CLOU - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
VOX Vanguard Communication Services ETF	-1.38%	26.27%	33.12%	44.81%	-38.85%	13.83%	29.12%	7.78%
CLOU Global X Cloud Computing ETF	9.15%	-5.59%	5.74%	41.36%	-39.56%	-3.27%	77.18%	4.79%

Correlation

The correlation between VOX and CLOU 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	0.59
Correlation (5Y) Calculated over the trailing 5-year period	0.70
Correlation (All Time) Calculated using the full available price history since Apr 17, 2019	0.69

Over the past year, the correlation between VOX and CLOU has dropped to 0.41 - well below their long-term average of 0.69, suggesting their price drivers have been diverging.

VOX vs. CLOU - Sectors Allocation Comparison

Sectors	VOX	CLOU
Communication Services	98.4%	5.5%
Technology	1.2%	85.3%
Consumer Cyclical	0.2%	3.0%
Real Estate	0.1%	5.6%
Industrials	0.0%	-
Healthcare	0.0%	0.6%
Basic Materials	-	-
Consumer Defensive	-	-
Energy	-	-
Financial Services	-	-
Utilities	-	-

Return for Risk

VOX vs. CLOU — Risk / Return Rank

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

VOX

VOX Risk / Return Rank: 35
VOX Sharpe Ratio Rank: 36
VOX Sortino Ratio Rank: 38
VOX Omega Ratio Rank: 35
VOX Calmar Ratio Rank: 30
VOX Martin Ratio Rank: 37

CLOU

CLOU Risk / Return Rank: 12
CLOU Sharpe Ratio Rank: 11
CLOU Sortino Ratio Rank: 12
CLOU Omega Ratio Rank: 12
CLOU Calmar Ratio Rank: 11
CLOU Martin Ratio Rank: 11

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.

VOX vs. CLOU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Communication Services ETF (VOX) and Global X Cloud Computing ETF (CLOU). 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.

	VOX	CLOU	Difference
Sharpe ratio: Return per unit of total volatility	1.34	0.22	+1.12
Sortino ratio: Return per unit of downside risk	2.00	0.51	+1.49
Omega ratio: Gain probability vs. loss probability	1.24	1.06	+0.18
Calmar ratio: Return relative to maximum drawdown	1.52	0.23	+1.29
Martin ratio: Return relative to average drawdown	5.83	0.58	+5.25
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VOX vs. CLOU - Sharpe Ratio Comparison

The current VOX Sharpe Ratio is 1.34, which is higher than the CLOU Sharpe Ratio of 0.22. The chart below compares the historical Sharpe Ratios of VOX and CLOU, 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

	VOX	CLOU	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.34	0.22	+1.12
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.36	-0.02	+0.38
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.45	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.43	0.24	+0.19

Drawdowns

VOX vs. CLOU - Drawdown Comparison

The maximum VOX drawdown since its inception was -57.18%, which is greater than CLOU's maximum drawdown of -53.74%. Use the drawdown chart below to compare losses from any high point for VOX and CLOU.

Drawdown Indicators

	VOX	CLOU	Difference
Max Drawdown Largest peak-to-trough decline	-57.18%	-53.74%	-3.44%
Max Drawdown (1Y) Largest decline over 1 year	-13.56%	-27.24%	+13.68%
Max Drawdown (3Y) Largest decline over 3 years	-21.15%	-33.18%	+12.03%
Max Drawdown (5Y) Largest decline over 5 years	-46.76%	-53.74%	+6.98%
Max Drawdown (10Y) Largest decline over 10 years	-46.76%	—	—
Current Drawdown Current decline from peak	-4.70%	-21.83%	+17.13%
Average Drawdown Average peak-to-trough decline	-11.91%	-24.42%	+12.51%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.54%	11.02%	-7.48%

Volatility

VOX vs. CLOU - Volatility Comparison

The current volatility for Vanguard Communication Services ETF (VOX) is 4.24%, while Global X Cloud Computing ETF (CLOU) has a volatility of 13.85%. This indicates that VOX experiences smaller price fluctuations and is considered to be less risky than CLOU based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VOX	CLOU	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.24%	13.85%	-9.61%
Volatility (6M) Calculated over the trailing 6-month period	11.16%	24.82%	-13.66%
Volatility (1Y) Calculated over the trailing 1-year period	15.45%	29.50%	-14.05%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.15%	30.57%	-9.42%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.89%	30.79%	-9.90%

VOX vs. CLOU - Expense Ratio Comparison

VOX has a 0.10% expense ratio, which is lower than CLOU's 0.68% expense ratio.

Dividends

VOX vs. CLOU - Dividend Comparison

VOX's dividend yield for the trailing twelve months is around 1.00%, while CLOU has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CLOU Global X Cloud Computing ETF	0.00%	0.00%	0.00%	0.00%	0.00%	1.76%	0.00%	0.05%	0.00%	0.00%	0.00%	0.00%
VOX Vanguard Communication Services ETF	1.00%	0.95%	1.05%	1.03%	0.88%	0.93%	0.73%	0.90%	2.77%	3.83%	2.67%	3.55%

Frequently Asked Questions

Can I hold both VOX and CLOU in my portfolio?

VOX and CLOU 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, VOX or CLOU?

CLOU has higher volatility (13.85%) compared to VOX (4.24%). In terms of maximum drawdown, VOX dropped -57.18% vs CLOU's -53.74%.

Which ETF is better, VOX or CLOU?

On 5-year performance, VOX leads with 7.58% vs -0.66% for CLOU. On fees, VOX is cheaper at 0.10% per year. On volatility, VOX has been the lower-risk option at 4.24%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, VOX or CLOU?

Over the 5-year period, VOX has performed better with a 7.58% return vs -0.66%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, VOX or CLOU?

VOX is cheaper with a 0.10% expense ratio, compared with 0.68% for CLOU.

Which ETF pays a higher dividend yield, VOX or CLOU?

VOX has the higher dividend yield at 1.00%, compared with 0.00% for CLOU.

What is the main difference between VOX and CLOU?

VOX tracks MSCI US Investable Market Telecommunication Services 25/50 Index, while CLOU tracks Indxx Global Cloud Computing Index. They also come from different issuers: Vanguard and Global X. Their fees differ too: 0.10% for VOX and 0.68% for CLOU.

Which has better risk-adjusted returns?

VOX currently has the higher Sharpe Ratio (1.34 vs 0.22), 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.