Roundhill Space & Technology ETF (MARS) is a Roundhill ETF with a 0.75% expense ratio, 28 holdings and $40MM in net assets. Largest sector: Industrials (65%).
Fee
0.75%
expense ratio
Net assets
$40MM
Launched
Mar 5, 2026
Holdings
28
as of Oct 20, 2026
Top 10 weight
69.0%
largest ten holdings
Largest sector
Industrials
65.2%
Yield
30-day SEC 0.87%
as of Sep 30, 2026
Benchmark
—
MARS's holdings are as of Oct 20, 2026.
Industrials
65.2%
Communication Services
20.0%
Technology
11.6%
Financial Services
3.2%
1
SPCX
Space Exploration Technologies Class A
27.05%
2
RKLB
Rocket Lab
8.38%
3
GSAT
Globalstar
5.76%
4
ASTS
AST SpaceMobile Class A
5.65%
5
VSAT
Viasat
4.54%
6
OHB
OHB SE
4.01%
7
IRDM
Iridium Communications
3.60%
8
MDA
MDA SPACE
3.50%
9
PL
Planet Labs PBC
3.40%
10
9412
SKY PERFECT JSAT
3.09%
11
ETL
Eutelsat Communications SACA
2.61%
12
FLY
Firefly Aerospace
2.54%
13
TSAT
Telesat
2.44%
14
LUNR
Intuitive Machines Class A
2.27%
15
SESG
SES SA
2.19%
16
AVIO
AVIO
2.18%
17
RDW
Redwire
2.07%
18
VOYG
Voyager Technologies Class A
1.70%
19
186A
Astroscale Holdings
1.66%
20
290A
Synspective
1.56%
21
SSIT
Seraphim Space Investment Trust
1.46%
22
BKSY
BlackSky Technology Class A
1.22%
23
GILT
GILAT SATELLITE NETWORKS LTD
1.21%
24
YSS
York Space Systems
1.17%
25
464A
QPS Holdings
1.16%
1–25 of 28
Funds listed by how much of their largest holdings they share with MARS — not a ranking.
Data from Roundhill; prices and returns from market data. Page updated October 29, 2026. Holdings and figures change over time. For information only — not investment advice.