BUG vs XAR ETF comparison
BUG vs XAR
BUG holds 30 companies that earn most of their revenue from cybersecurity, so it is the most focused of the three cyber funds, and XAR holds 50 U.S. aerospace and defense companies at close to equal weights, so smaller companies count as much as the giants. They cover different themes. BUG is a cybersecurity fund and XAR is an aerospace and defense fund.
BUG follows the Indxx Cybersecurity Index, which requires companies to earn at least half of their revenue from cybersecurity. XAR follows the S&P Aerospace & Defense Select Industry Index, which uses a modified equal weighting. BUG charges 0.50% and XAR charges 0.35%. This page lines up what each fund holds, how much they overlap, how each performed and what each costs, with the date next to every number.
BUG vs XAR, the short answer
BUG and XAR differ in what they hold and what they charge. They cover different themes. BUG is a cybersecurity fund and XAR is an aerospace and defense fund. BUG follows the Indxx Cybersecurity Index, which requires companies to earn at least half of their revenue from cybersecurity. XAR follows the S&P Aerospace & Defense Select Industry Index, which uses a modified equal weighting.
Expense ratios are 0.50% and 0.35%. NAV total returns, annualized (both to Sep 30, 2026): 1 year 30.94% vs -1.59%; 3 years 23.96% vs 27.89%; 5 years 9.20% vs 14.70%. Neither is better for everyone; the choice turns on which theme you want, how concentrated you are willing to be and what you already own.
Want the full picture of one fund before you compare? Read the complete guide for each fund: BUG guide and XAR guide. Each guide covers fees, holdings, yield, returns and taxes.
BUG vs XAR overlap, if you own both
BUG · ten largest holdings
As of Nov 9, 2026- 1Okta OKTA8.59%Only here
- 2CrowdStrike CRWD7.30%Only here
- 3Palo Alto Networks PANW6.57%Only here
- 4Qualys QLYS6.22%Only here
- 5Netskope NTSK6.03%Only here
- 6Rubrik RBRK5.58%Only here
- 7Tenable TENB5.58%Only here
- 8Zscaler ZS5.42%Only here
- 9Fortinet FTNT5.17%Only here
- 10Varonis Systems VRNS4.97%Only here
Ten largest total 61.4%
XAR · ten largest holdings
As of Nov 9, 2026- 1Karman Holdings KRMN3.47%Only here
- 2StandardAero SARO3.34%Only here
- 3Lockheed Martin LMT3.31%Only here
- 4Heico HEI3.23%Only here
- 5Honeywell Aerospace HONA3.20%Only here
- 6L3Harris Technologies LHX3.19%Only here
- 7Huntington Ingalls Industries HII3.19%Only here
- 8TransDigm Group TDG3.19%Only here
- 9FTAI Aviation FTAI3.16%Only here
- 10Textron TXT3.15%Only here
Ten largest total 32.4%
Shared by both · 0 companies
| Company | BUG weight | XAR weight | Gap |
|---|
Only in BUG’s top ten: Okta, CrowdStrike, Palo Alto Networks, Qualys, Netskope, Rubrik, Tenable, Zscaler, Fortinet, Varonis Systems. Only in XAR’s top ten: Karman Holdings, StandardAero, Lockheed Martin, Heico, Honeywell Aerospace, L3Harris Technologies, Huntington Ingalls Industries, TransDigm Group, FTAI Aviation, Textron.
The twist
0.0% of the weight sits in stocks both funds hold (matched by ticker in issuer holdings dated Nov 9, 2026), and 0 stocks appear in both top-ten lists. The funds share almost nothing, so owning both means holding two separate themes.
BUG vs XAR, one goal, which fund?
BUG vs XAR, where the money goes
BUG · Global X, Nov 9, 2026
XAR · State Street, Nov 9, 2026
BUG vs XAR returns compared over 1, 3, 5 and 10 years
BUG vs XAR, what each fund costs a year
The data room
Every figure behind the BUG vs XAR cards above, with its source, date and evidence grade. Open the issuer documents before relying on any number.
BUG vs XAR key facts
Evidence grade: Issuer issuer page · Mixed issuer plus provider · 3rd party| Metric | BUG | XAR | Grade and source |
|---|
Portfolio characteristics
| Metric | BUG | XAR | Grade and source |
|---|
Net assets are dated Nov 9, 2026 for both funds (BUG $2.07B; XAR $5.26B). Figures an issuer page does not show are left out or marked Not captured, not estimated.
BUG vs XAR holdings and top ten
Click a tile · BUG: Global X, Nov 9, 2026 · XAR: State Street, Nov 9, 2026Tile area is proportional to weight.
| # | Holding | Weight |
|---|
| # | Holding | Weight |
|---|
Top ten sums: BUG 61.4% · XAR 32.4%. 0 shared top-ten holdings. Weights change.
BUG vs XAR sector exposure
BUG: Nov 9, 2026 · XAR: Nov 9, 2026The sector mirror
Same funds, different lenses
Company size
BUG holds 30 stocks and XAR holds 50. BUG reports a weighted average market cap of $39.96B. XAR reports a weighted average market cap of $48.42B. Theme funds that weight by market value lean toward very large companies, while equal-weight designs give smaller companies more say.
What you actually own
BUG vs XAR performance
Matched dates, both to Sep 30, 2026All rows come from the issuer pages and are dated Sep 30, 2026 for both funds, so they compare like for like. NAV returns include fees; market price and index returns are shown beside them where the issuer published them. “Since inception” starts in different years (BUG 2019, XAR 2011). Past performance does not guarantee future results.
Growth of a hypothetical $10,000 · NAV total return, both to Sep 30, 2026
Both funds derived from issuer NAV total returns on matched dates (compounded). Fund expenses are already in NAV. Illustration, not a forecast.
BUG vs XAR yield, dividends and dividend growth
Yield and distribution facts| Measure | BUG | XAR |
|---|---|---|
| 30-day SEC yield | -0.25% | Not captured |
| Trailing 12-month | Not captured | Not captured |
| Paid, last 12 months | Not captured | Not captured |
| Frequency | Semi-annual | Quarterly |
Funds like these pay little income. The 30-day SEC yield was -0.25% for BUG and not captured for XAR, and a figure near zero or below means fund costs use up most of the dividends the stocks pay. These funds are held for growth, not yield. Gaps are marked Not captured. See what is dividend yield and yield vs total return.
BUG vs XAR concentration and overlap
Ten largest positions · shared holdingsRank by rank, the ten largest holdings of each fund. Top five: BUG 34.7%, XAR 16.6%. Top ten: BUG 61.4%, XAR 32.4%.
BUG vs XAR trading and liquidity
Issuer fund pages · Nov 9, 2026The issuers report 30-day median bid/ask spreads of 0.06% for BUG and 0.10% for XAR. A spread of 0.05% is about $50 between the buy and sell price on $100,000, and smaller funds usually cost more to trade than larger ones. Funds with many foreign holdings can also trade at a premium or discount to NAV when overseas markets are closed. Use limit orders for large trades and avoid the first and last minutes of the session. See creation, redemption and trading.
BUG vs XAR expense ratio and fees in dollars
As stated by each issuer| Balance | BUG (0.50%) | XAR (0.35%) | Gap per year |
|---|---|---|---|
| $10,000 | $50 | $35 | $15 |
| $50,000 | $250 | $175 | $75 |
| $100,000 | $500 | $350 | $150 |
The expense ratio is taken from fund assets, not billed to you. Fees exclude the bid/ask spread, any premium or discount to NAV, brokerage commissions and taxes.
BUG vs XAR, how each fund picks its stocks
Index approach, in plain languageBUG · Indxx Cybersecurity Index
BUG tracks the Indxx Cybersecurity Index. It holds 30 companies that earn most of their revenue from cybersecurity, so it is the most focused of the three cyber funds. It was launched in 2019, and the ten largest holdings total 61.4% of the fund. Index rules and rebalance dates are in the prospectus.
XAR · S&P Aerospace & Defense Select Industry Index
XAR tracks the S&P Aerospace & Defense Select Industry Index. It holds 50 U.S. aerospace and defense companies at close to equal weights, so smaller companies count as much as the giants. It was launched in 2011, and the ten largest holdings total 32.4% of the fund. Index rules and rebalance dates are in the prospectus.
Exact eligibility rules, caps and rebalance dates sit in each prospectus and index methodology; read them before relying on this summary.
BUG vs XAR, why yield and returns differ
Sector mix explains much of the gapThey cover different themes. BUG is a cybersecurity fund and XAR is an aerospace and defense fund. BUG follows the Indxx Cybersecurity Index, which requires companies to earn at least half of their revenue from cybersecurity. XAR follows the S&P Aerospace & Defense Select Industry Index, which uses a modified equal weighting.
Because each index sets its own rules, the funds hold different stocks at different weights, and that explains most of the gap in returns. A fund that puts more weight in its largest companies will follow those companies closely, while an evenly weighted fund behaves more like an average of many smaller ones. Fees matter less than holdings over short periods and more over long ones.
How to decide between BUG and XAR
A step-by-step frameworkStart with what separates them: They cover different themes. BUG is a cybersecurity fund and XAR is an aerospace and defense fund. BUG follows the Indxx Cybersecurity Index, which requires companies to earn at least half of their revenue from cybersecurity. XAR follows the S&P Aerospace & Defense Select Industry Index, which uses a modified equal weighting. Then check what you already own: the funds overlap by 0.0%, so holding both is a real decision about how much of each theme you want.
- Step 1 · Theme: BUG is a cybersecurity fund and XAR is an aerospace and defense fund.
- Step 2 · Concentration: the ten largest holdings are 61.4% of BUG and 32.4% of XAR.
- Step 3 · Cost: BUG 0.50% vs XAR 0.35%.
- Step 4 · Overlap with your core: the largest holdings also sit in S&P 500 funds, so use the Diversification Calculator against what you own.
Size the position against your whole portfolio. Theme funds are volatile, so they usually play a small, deliberate role beside a core fund.
BUG vs XAR for Canadian investors
Currency, withholding tax and account typeBUG and XAR are U.S.-listed and trade in U.S. dollars, so buying them from a Canadian account usually involves converting Canadian dollars, which adds a cost on entry and exit. A move in the U.S. dollar also changes your return in Canadian dollars.
Dividends from U.S.-listed funds are generally subject to U.S. withholding tax for Canadian holders, with treatment that depends on the account type. These funds pay little income, so the effect is small, but confirm the rules for your account with a tax professional. This is general education, not tax advice.
Risks of BUG and XAR
What can go wrongShared risks
- Theme funds are concentrated in one industry or idea, so they can fall much further than the broad market.
- Valuations can be high, and prices can drop sharply when growth or government spending expectations change.
- Returns can differ widely from one period to the next; a strong year often follows or precedes a weak one.
- Neither fund pays meaningful income, so the return depends on price.
Fund-specific risks
- BUG: ten largest holdings total 61.4% of the fund (Nov 9, 2026); 30 stocks.
- XAR: ten largest holdings total 32.4% of the fund (Nov 9, 2026); 50 stocks.
- BUG: holds smaller pure-play companies, and its 3-year standard deviation of 38.6% is the highest reported in this group. XAR: equal weighting gives more room to small companies, including early-stage space and air mobility names.
- Both: the funds track indexes with their own rules, so holdings change at each rebalance.
BUG vs XAR taxes and account placement
General education, not tax adviceBoth funds hold stocks and are taxed like other equity ETFs. Distributions are small, and gains are taxed when you sell, at rates that depend on how long you held the shares and on your own situation. Funds with foreign holdings may pay some foreign tax inside the fund.
For Canadian account types and withholding tax, see the Canadian section above. Confirm the rules for your account with a tax professional, and read how to build an ETF portfolio.
Other ETFs people compare
For context, not recommendationsInvestors comparing BUG and XAR often also look at the other funds in this group: HACK, CIBR, BUG, ITA, XAR and PPA. See the other cybersecurity and defense ETFs comparisons, the related thematic ETFs and the ETF research hub.
BUG vs XAR drawdown arithmetic
What a decline means in dollarsRecovery gain = decline ÷ (1 − decline). The scenarios use illustrative declines of 10%, 20% and 30% so you can see what a drop does to each fund. They are a rough guide to a bad year, not a worst-case figure. See the Position Size Calculator.
Tools to compare BUG vs XAR
Static weights from this pageIgnores taxes, spreads and holdings differences. ETF Fee Calculator.
Check shared exposure with the Diversification Calculator.
BUG vs XAR, which fits which job
Characteristics, not recommendationsBUG may suit investors who want…
Pure-play cybersecurity companies at the lowest fee of the three.
Strengths
- 30 holdings
- Exchange-traded and priced all day
Watch points
- Higher fee: 0.50% against 0.35%
- Heavier top ten: 61.4% against 32.4%
- Led in 1 of 3 return windows (both to Sep 30, 2026)
- Narrow theme exposure
XAR may suit investors who want…
Aerospace and defense with small and mid-sized companies given equal say.
Strengths
- Lower fee: 0.35% against 0.50%
- Flatter top ten: 32.4% against 61.4%
- Led in 2 of 3 return windows (both to Sep 30, 2026)
- 50 holdings
Watch points
- Narrow theme exposure
- Not a complete portfolio
BUG vs XAR investor scenarios
Characteristics that fit, not recommendationsBUG vs XAR key terms
Plain-language definitions
BUG vs XAR, frequently asked questions
Answers use the figures and dates shown aboveIs BUG or XAR better?
In the BUG vs XAR question, neither is better for everyone. BUG and XAR differ in what they hold and what they charge. They cover different themes. BUG is a cybersecurity fund and XAR is an aerospace and defense fund. BUG follows the Indxx Cybersecurity Index, which requires companies to earn at least half of their revenue from cybersecurity.
XAR follows the S&P Aerospace & Defense Select Industry Index, which uses a modified equal weighting. Expense ratios are 0.50% and 0.35%. NAV total returns, annualized (both to Sep 30, 2026): 1 year 30.94% vs -1.59%; 3 years 23.96% vs 27.89%; 5 years 9.20% vs 14.70%. Neither is better for everyone; the choice turns on which theme you want, how concentrated you are willing to be and what you already own.
BUG vs XAR, what are the expense ratios?
BUG charges 0.50% and XAR charges 0.35%, which is $50 and $35 a year per $10,000.
BUG vs XAR, how much do the funds overlap?
On BUG vs XAR, about 0.0% of the weight is held by both funds, matched by ticker in issuer holdings dated Nov 9, 2026. 0 stocks are held by both, and 0 appear in both top-ten lists.
BUG vs XAR, what does each ETF track?
BUG tracks the Indxx Cybersecurity Index. XAR tracks the S&P Aerospace & Defense Select Industry Index.
BUG vs XAR, what are the top holdings?
BUG (Nov 9, 2026): Okta 8.59%, CrowdStrike 7.3%, Palo Alto Networks 6.57%, Qualys 6.22%, Netskope 6.03%. XAR (Nov 9, 2026): Karman Holdings 3.47%, StandardAero 3.34%, Lockheed Martin 3.31%, Heico 3.23%, Honeywell Aerospace 3.2%.
BUG vs XAR, which has performed better?
NAV total returns, annualized (both to Sep 30, 2026): 1 year 30.94% vs -1.59%; 3 years 23.96% vs 27.89%; 5 years 9.20% vs 14.70%. Past performance does not guarantee future results.
BUG vs XAR, can I own both?
On BUG vs XAR, you can. They overlap by about 0.0%. The funds share almost nothing, so owning both means holding two separate themes.
BUG vs XAR, do the funds pay dividends?
On BUG vs XAR, only small amounts. The 30-day SEC yield was -0.25% for BUG and not captured for XAR, so income is not the reason to hold either fund.
BUG vs XAR, how concentrated are the funds?
The ten largest holdings are 61.4% of BUG and 32.4% of XAR. The largest single holding is Okta at 8.59% in BUG and Karman Holdings at 3.47% in XAR.
BUG vs XAR, are they suitable for Canadian investors?
On BUG vs XAR, both are U.S.-listed and trade in U.S. dollars, so Canadians face currency conversion costs and U.S. withholding tax on the small dividends. Treatment differs across TFSA, RRSP and taxable accounts. This is general education, not tax advice.
BUG vs XAR documents and sources
Open the issuer documents before relying on any figureBUG · Global X
XAR · State Street
Third-party sources
Global X BUG fund page · State Street XAR fund page.
Methodology and limits
- BUG figures come from the Global X fund page and XAR figures from the State Street fund page.
- Dates are shown beside each figure; the issuer documents are linked below.
- Holdings overlap is the sum of the smaller weight of each ticker held by both funds, using each issuer’s full holdings list (Nov 9, 2026). Cash and futures are left out.
- Industry groups on this page are assigned by this site from each stock’s main business, using one scheme for every fund, so they will not match an issuer’s own sector table.
- Figures an issuer page does not show are marked Not captured, and nothing was filled from memory or from another fund.
- Growth of $10,000 is derived from annualized NAV total returns on matched dates; dollar values are approximate.
Educational research, not personalized investment, tax or legal advice, and not a recommendation to buy or sell any fund. Investing involves risk, including loss of principal. Past performance does not guarantee future results. Calculators are hypothetical illustrations. Fund data are provided as published by the sources named and may differ from current figures.