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BUG vs. QYLD
Performance
Return for Risk
Drawdowns
Volatility
Dividends

BUG vs. QYLD

Last updated Jun 24, 2026

BUG (Global X Cybersecurity ETF) and QYLD (Global X NASDAQ 100 Covered Call ETF) are both exchange-traded funds - BUG is a Technology Equities fund tracking the Indxx Cybersecurity Index, while QYLD is a Nasdaq-100 fund tracking the CBOE NASDAQ-100 Buy Write V2. Both are passively managed. Over the past 5 years, BUG returned 3.60%/yr vs 8.26%/yr for QYLD. A 0.62 correlation means they provide meaningful diversification when combined. BUG charges 0.50%/yr vs 0.60%/yr for QYLD.

Performance

BUG vs. QYLD - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Global X Cybersecurity ETF (BUG) and Global X NASDAQ 100 Covered Call ETF (QYLD). The values are adjusted to include any dividend payments, if applicable.

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Returns By Period

In the year-to-date period, BUG achieves a 11.69% return, which is significantly higher than QYLD's 7.89% return.

BUG

1D
2.13%
1M
-0.96%
YTD
11.69%
6M
9.26%
1Y
-6.48%
3Y*
13.04%
5Y*
3.60%
10Y*
—

QYLD

1D
-1.97%
1M
1.41%
YTD
7.89%
6M
7.59%
1Y
22.55%
3Y*
13.99%
5Y*
8.26%
10Y*
9.99%
*Multi-year figures are annualized to reflect compound growth (CAGR)

BUG vs. QYLD - Yearly Performance Comparison

2026 (YTD)2025202420232022202120202019
BUG
Global X Cybersecurity ETF		11.69%-5.04%9.59%41.40%-33.63%13.24%70.83%6.21%
QYLD
Global X NASDAQ 100 Covered Call ETF		7.89%9.28%19.35%22.77%-19.08%10.41%8.72%3.74%

Correlation

The correlation between BUG and QYLD is 0.42, which is low. Their price movements are largely independent, making them effective diversification partners.

Correlation
Correlation (1Y)
Calculated over the trailing 1-year period

0.42

Correlation (3Y)
Calculated over the trailing 3-year period

0.54

Correlation (5Y)
Calculated over the trailing 5-year period

0.62

Correlation (All Time)
Calculated using the full available price history since Oct 31, 2019

0.62

Over the past year, the correlation between BUG and QYLD has dropped to 0.42 - well below their long-term average of 0.62, suggesting their price drivers have been diverging.

BUG vs. QYLD - Sectors Allocation Comparison

Sectors
BUG
QYLD

Technology

100.0%
58.7%

Communication Services

0.0%
14.3%

Consumer Cyclical

0.0%
11.4%

Consumer Defensive

0.0%
6.4%

Healthcare

0.0%
3.7%

Basic Materials

-

1.0%

Energy

-

0.5%

Financial Services

-

0.2%

Industrials

-

2.6%

Real Estate

-

0.1%

Utilities

-

1.2%

Technology

BUG
100.0%
QYLD
58.7%

Communication Services

BUG
0.0%
QYLD
14.3%

Consumer Cyclical

BUG
0.0%
QYLD
11.4%

Consumer Defensive

BUG
0.0%
QYLD
6.4%

Healthcare

BUG
0.0%
QYLD
3.7%

Basic Materials

BUG

-

QYLD
1.0%

Energy

BUG

-

QYLD
0.5%

Financial Services

BUG

-

QYLD
0.2%

Industrials

BUG

-

QYLD
2.6%

Real Estate

BUG

-

QYLD
0.1%

Utilities

BUG

-

QYLD
1.2%

Compare stocks, funds, or ETFs

Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.

Global X Cybersecurity ETF

Global X NASDAQ 100 Covered Call ETF

Often compared with BUG:
BUG vs. CIBRBUG vs. HACKBUG vs. IHAKBUG vs. WCBRBUG vs. BUGG.LBUG vs. IGVBUG vs. WCLD
Often compared with QYLD:
QYLD vs. JEPQQYLD vs. JEPIQYLD vs. QQQQYLD vs. XYLDQYLD vs. RYLDQYLD vs. SCHDQYLD vs. QYLG

Return for Risk

BUG vs. QYLD — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
BUG
BUG Risk / Return Rank: 77
Overall Rank
BUG Sharpe Ratio Rank: 77
Sharpe Ratio Rank
BUG Sortino Ratio Rank: 77
Sortino Ratio Rank
BUG Omega Ratio Rank: 77
Omega Ratio Rank
BUG Calmar Ratio Rank: 77
Calmar Ratio Rank
BUG Martin Ratio Rank: 77
Martin Ratio Rank
QYLD
QYLD Risk / Return Rank: 8484
Overall Rank
QYLD Sharpe Ratio Rank: 7676
Sharpe Ratio Rank
QYLD Sortino Ratio Rank: 7777
Sortino Ratio Rank
QYLD Omega Ratio Rank: 8787
Omega Ratio Rank
QYLD Calmar Ratio Rank: 8585
Calmar Ratio Rank
QYLD Martin Ratio Rank: 9494
Martin Ratio Rank
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.

BUG vs. QYLD - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Global X Cybersecurity ETF (BUG) and Global X NASDAQ 100 Covered Call ETF (QYLD). 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.

BUGQYLDDifference
Sharpe ratioReturn per unit of total volatility
-0.21
2.34

-2.55

Sortino ratioReturn per unit of downside risk
-0.08
3.28

-3.36

Omega ratioGain probability vs. loss probability

0.99

1.52

-0.53

Calmar ratioReturn relative to maximum drawdown

-0.17

4.56

-4.73

Martin ratioReturn relative to average drawdown

-0.35

25.38

-25.73

BUG vs. QYLD - Sharpe Ratio Comparison

The current BUG Sharpe Ratio is -0.21, which is lower than the QYLD Sharpe Ratio of 2.34. The chart below compares the historical Sharpe Ratios of BUG and QYLD, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

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Drawdowns

BUG vs. QYLD - Drawdown Comparison

The maximum BUG drawdown since its inception was -41.66%, which is greater than QYLD's maximum drawdown of -24.75%. Use the drawdown chart below to compare losses from any high point for BUG and QYLD.

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Drawdown Indicators

BUGQYLDDifference

Max Drawdown

Largest peak-to-trough decline

-41.66%

-24.75%

-16.91%

Max Drawdown (1Y)

Largest decline over 1 year

-37.69%

-4.97%

-32.72%

Max Drawdown (3Y)

Largest decline over 3 years

-37.69%

-19.06%

-18.63%

Max Drawdown (5Y)

Largest decline over 5 years

-41.66%

-24.61%

-17.05%

Max Drawdown (10Y)

Largest decline over 10 years

—

-24.75%

—

Current Drawdown

Current decline from peak

-11.75%

-2.10%

-9.65%

Average Drawdown

Average peak-to-trough decline

-14.38%

-3.82%

-10.56%

Ulcer Index

Depth and duration of drawdowns from previous peaks

18.53%

0.89%

+17.64%

Volatility

BUG vs. QYLD - Volatility Comparison

Global X Cybersecurity ETF (BUG) has a higher volatility of 13.95% compared to Global X NASDAQ 100 Covered Call ETF (QYLD) at 4.78%. This indicates that BUG's price experiences larger fluctuations and is considered to be riskier than QYLD based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

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Volatility by Period

BUGQYLDDifference

Volatility (1M)

Calculated over the trailing 1-month period

13.95%

4.78%

+9.17%

Volatility (6M)

Calculated over the trailing 6-month period

26.20%

8.50%

+17.70%

Volatility (1Y)

Calculated over the trailing 1-year period

31.21%

9.70%

+21.51%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

28.55%

14.84%

+13.71%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

29.30%

15.56%

+13.74%

BUG vs. QYLD - Expense Ratio Comparison

BUG has a 0.50% expense ratio, which is lower than QYLD's 0.60% expense ratio.

Dividends

BUG vs. QYLD - Dividend Comparison

BUG's dividend yield for the trailing twelve months is around 0.03%, less than QYLD's 11.68% yield.

PositionTTM20252024202320222021202020192018201720162015
BUG
Global X Cybersecurity ETF		0.03%0.04%0.09%0.10%1.56%0.66%0.46%0.24%0.00%0.00%0.00%0.00%
QYLD
Global X NASDAQ 100 Covered Call ETF		11.68%11.55%12.50%11.78%13.75%12.85%11.16%9.84%12.44%7.69%9.15%9.42%

Frequently Asked Questions

BUG and QYLD have a correlation of 0.42, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

BUG has higher volatility (13.95%) compared to QYLD (4.78%). In terms of maximum drawdown, BUG dropped -41.66% vs QYLD's -24.75%.

On 5-year performance, QYLD leads with 8.26% vs 3.60% for BUG. On fees, BUG is cheaper at 0.50% per year. On volatility, QYLD has been the lower-risk option at 4.78%. The better choice depends on whether you care most about return, fees, risk, or income.

Over the 5-year period, QYLD has performed better with a 8.26% return vs 3.60%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

BUG is cheaper with a 0.50% expense ratio, compared with 0.60% for QYLD.

QYLD has the higher dividend yield at 11.68%, compared with 0.03% for BUG.

BUG is categorized as Technology Equities, while QYLD is Nasdaq-100. BUG tracks Indxx Cybersecurity Index, while QYLD tracks CBOE NASDAQ-100 Buy Write V2. Their fees differ too: 0.50% for BUG and 0.60% for QYLD.

QYLD currently has the higher Sharpe Ratio (2.34 vs -0.21), 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.

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