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MARS vs ORBX

Roundhill Space & Technology ETF

MARSDCboe

Global X Space Tech ETF

ORBXCNasdaq

Overlap

77.3%by weight

Expense ratio

ORBX −0.25pt a year

MARS0.75%ORBX0.50%

Avg volume · 30D

MARS 1.1×the volume

MARS73.7KORBX69.7K

MARS vs ORBX Performance

Jul 31, 2026 – Oct 30, 2026

−4.9%MARS−8.0%ORBX

Jul 31, 2026 to Oct 30, 2026. MARS −4.9%. ORBX −8.0%. Use the arrow keys to read each point.0%10%20%Jul 2026Sep 2026Oct 2026
Expense ratio
MARS 0.75%
ORBX 0.50%, better
Fund size
MARS $40M
ORBX $35M
Holdings
MARS 29
ORBX 37
Avg volume (30D)
MARS 73.7K sh, better
ORBX 69.7K sh
NAV per share
MARS $22.35
ORBX $36.48
52W range

ETF.net Grade

MARS: Cost 29, Risk 43, Mission not scored, Tradability 47, Holdings 39, Durability 65. ORBX: Cost 71, Risk 25, Mission not scored, Tradability 51, Holdings 29, Durability 65.
Pillar letters and Scores for MARS, ORBX, with each pillar’s weight
PillarMARSORBX
Cost30% weightD29A71Higher
Mission25% weightNot scoredNot scored
Risk15% weightC43HigherD25
Tradability15% weightC47C51Higher
Holdings10% weightD39HigherD29
Durability5% weightB65B65

Rank among Space funds

How we build Categories ›
Same Category. Both funds are graded against the same funds, so their Grades compare head to head.

Same Category. MARS and ORBX are both graded against the same 15 Space funds, so their Grades compare head to head.

Space⁠

Category · 15 funds
See all 15 ›

ORBX ranks 4th and MARS 12th of 15 funds in the Space Category.

  1. Rank 1AUFOXDefiance Space and Connective Tech ETFScore 84
  2. Rank 2AROKTState Street SPDR S&P Kensho Final Frontiers ETFScore 80
  3. Rank 3CARKXARK Space & Defense Innovation ETFScore 54
  4. Rank 4CORBXGlobal X Space Tech ETFScore 51
  5. Rank 4CWARPVanEck Space ETFScore 51
  6. Rank 8CWSPCWisdomTree Space Economy FundScore 40
  7. Rank 12DMARSRoundhill Space & Technology ETFScore 38
  8. Rank 12DXSPCVegaShares SpaceX & Beyond Earth ETFScore 38

Our read on each fund

ETF.net Research

MARSDRoundhill Space & Technology ETF

ORBXCGlobal X Space Tech ETF

In short

MARS No data

ORBX Space investing usually carries a 0.75% toll. ORBX charges 0.50% for a global basket of roughly 40 companies spanning launch systems, satellites, orbital transport and space tourism. The whole launchpad, not one slice of it.

Stated mandate

MARS No data

ORBX ORBX seeks to track, before fees and expenses, the price and yield performance of the Global X Space Tech Index. It invests in companies benefiting from commercialization of the global space economy across launch systems, space technology and components, orbital transport, satellite-enabled services, and space exploration or tourism.

Why people hold it

MARS No data

  • ORBX At 0.50%, it undercuts the 0.75% sticker worn by UFO, ARKX and NASA. Same theme, smaller toll.
  • The index reaches across the whole stack: launch systems, space components, orbital transport, satellite-enabled services, exploration and tourism. Not a pure rocket bet.globalxetfs.com
  • Rules-based, index-tracked and global, holding roughly 40 names. That package lands in the upper tier of the small space-ETF field.

Worth knowing

MARS No data

  • ORBX Concentration cuts both ways: about 40 stocks in one young industry, so swings run wider than a broad-market fund.
  • Launched in 2026, so there is little history to judge it by and the asset base is still building.
  • Income is not part of the design; this is a growth theme, not a payout sleeve.

Full MARS profile⁠

Full ORBX profile⁠

MARS vs ORBX Holdings

As of

How MARS and ORBX differ

Overlap by weight

77.3%

Shared holdings make up 88.6% of ORBX and 86.7% of MARS.

Level by level

  • Holdings22 in both77.3%
  • Countryby domicile91.9%
  • Asset classEquity100%

Sector

No Sector split for MARS and ORBX.

Country, concentration and asset class

Country by domicile

Country weights in MARS and ORBX, widest gap first
CountryMore in MARSMore in ORBX
United StatesORBX +4.2 points
JapanMARS +3.9 points
GermanyMARS +3.4 points
United KingdomORBX +1.1 points
PolandORBX +0.8 points
SwedenORBX +0.7 points
Other countries (6)ORBX +0.6 points

Concentration

Weight in the 10 largest Holdings

  • MARS68.6%
  • ORBX74.5%

Securities held

  • MARS29
  • ORBX37

Asset class

MARS
Equity
ORBX
Equity

Holdings

  • Only in MARS7
  • In both22
  • Only in ORBX15

Only in MARS

7 securities, 13.3% of MARS by weight

  • MDA Space Ltd3.40%
  • SKY Perfect JSAT Corp2.96%
  • Telesat Corp2.17%

Only in ORBX

15 securities, 11.5% of ORBX by weight

  • Mda Space Ltd4.52%
  • Filtronic PLC1.28%
  • Creotech Instruments SA0.80%

Weight gaps

All 22 Holdings in both funds, largest gap first.

Holding weights in MARS and ORBX, widest gap first
HoldingMore in MARSMore in ORBX
Ohb SEMARS +3.66 points
AST SpaceMobile IncASTSORBX +3.21 points
Redwire CorpRDWORBX +1.80 points
Intuitive Machines IncLUNRORBX +1.42 points
Viasat IncVSATMARS +1.35 points
Rocket Lab CorpRKLBORBX +1.25 points
Iridium Communications IncIRDMORBX +1.08 points
Firefly Aerospace IncFLYORBX +1.05 points

All MARS holdings⁠All 36 ORBX holdings⁠

How we measure overlap

Each holding counts at its smaller weight in the two funds, summed over the full Holdings. Sector, country and asset class use the same rule on each fund’s split. Cash, FX and derivative lines stay out of the counts. Two bond funds get no overlap figure.

MARS vs ORBX Cost

Overpaying MARS vs ORBX

$4,503

On $10,000 over 30 years. 7% growth a year before fees, expense ratio only.

  • MARS 0.75%

    $14,482

  • ORBX 0.50%

    $9,979

$10,000
30 years

Cost over time

  • MARS 0.75%
  • ORBX 0.50%
  • Overpaying
One line per fund, from year 0 to year 30. Use the arrow keys to read each point.$0$5K$10K$15K051015202530MARS $14,482ORBX $9,979

Year by year

YearMARSORBXOverpaying
10$1,336$900$436
20$5,078$3,460$1,618
30$14,482$9,979$4,503

Expense ratio

  • 0.75%MARS
  • 0.50%ORBX, cheaper
  • Middle half of Space funds
  • Median 0.75%

ORBX 5th cheapest of 15 funds

MARS 8th cheapest of 15 funds

MARS vs ORBX Dividends

Last 12 months to Oct 30, 2026
Payout (12M)
MARS None
ORBX None

Distribution history

MARSAll MARS payments⁠

No distribution history available.

ORBXAll ORBX payments⁠

No distribution history available.

MARS vs ORBX Risk

Fall from peak · 5 years

This chart needs five years of history for both funds.

Risk facts

Market sensitivityBeta, 5 years
MARS 4.86ORBX 1.30

Popular comparisons

  • MARSDvsUFOXA

    Roundhill Space & Technology ETF · Defiance Space and Connective Tech ETF

    Expense ratio
    0.75% · 0.30%
    Category
    Same Category. Both funds are graded against the same funds, so their Grades compare head to head.

  • ORBXCvsUFOXA

    Global X Space Tech ETF · Defiance Space and Connective Tech ETF

    Expense ratio
    0.50% · 0.30%
    Category
    Same Category. Both funds are graded against the same funds, so their Grades compare head to head.

  • MARSDvsROKTA

    Roundhill Space & Technology ETF · State Street SPDR S&P Kensho Final Frontiers ETF

    Expense ratio
    0.75% · 0.45%
    Category
    Same Category. Both funds are graded against the same funds, so their Grades compare head to head.

  • ORBXCvsROKTA

    Global X Space Tech ETF · State Street SPDR S&P Kensho Final Frontiers ETF

    Expense ratio
    0.50% · 0.45%
    Category
    Same Category. Both funds are graded against the same funds, so their Grades compare head to head.

  • MARSDvsARKXC

    Roundhill Space & Technology ETF · ARK Space & Defense Innovation ETF

    Expense ratio
    0.75% · 0.75%
    Category
    Same Category. Both funds are graded against the same funds, so their Grades compare head to head.

  • ORBXCvsARKXC

    Global X Space Tech ETF · ARK Space & Defense Innovation ETF

    Expense ratio
    0.50% · 0.75%
    Category
    Same Category. Both funds are graded against the same funds, so their Grades compare head to head.