Roundhill Space & Technology ETF (MARS) Holdings
MARS holdings summary
as of Oct 25, 2026- Holdings
- 26 positions listed
- Top 10 weight
- 70.3% of net assets
- Effective holdings
- 9 equal-weight equivalent
- Largest holding
- SPCX 28.23% Space Exploration Technologies Corp.
- Annual turnover
- — of the portfolio traded
All MARS holdings
| # | Name | ||||||
|---|---|---|---|---|---|---|---|
| 1 | SPCX | Space Exploration Technologies Corp. | Industrials | 28.23% | $11.2M | $1.92T | — |
| 2 | RKLB | Rocket Lab USA, Inc. | Industrials | 8.24% | $3.3M | $32.51B | — |
| 3 | GSAT | Globalstar, Inc | Communication Services | 5.94% | $2.4M | $10.67B | — |
| 4 | NPA | New Providence Acquisition Corp | Financial Services | 5.44% | $2.2M | — | — |
| 5 | VSAT | Viasat, Inc. | Technology | 4.40% | $1.8M | $8.10B | — |
| 6 | OHB | OHB SE | Industrials | 4.37% | $1.7M | — | — |
| 7 | MDA | MDA Ltd | Industrials | 3.54% | $1.4M | — | — |
| 8 | IRDM | Iridium Communications Inc | Communication Services | 3.46% | $1.4M | $4.64B | 49.7 |
| 9 | PL | Planet Labs PBC | Industrials | 3.41% | $1.4M | $4.93B | — |
| 10 | 9412 | SKY Perfect JSAT Holdings Inc. | Communication Services | 3.23% | $1.3M | — | — |
| 11 | ETL | Eutelsat Communications SA | Communication Services | 2.84% | $1.1M | — | — |
| 12 | FLY | Firefly Aerospace Inc. | Industrials | 2.70% | $1.1M | $2.80B | — |
| 13 | TSAT | Telesat Corporation | Technology | 2.33% | $924,200.44 | $2.31B | — |
| 14 | LUNR | Intuitive Machines, Inc. | Industrials | 2.27% | $903,254.60 | $1.74B | — |
| 15 | AVIO | Avio S.p.A | Industrials | 2.21% | $879,327.85 | — | — |
| 16 | SESG | SES S. A. | Communication Services | 2.21% | $878,652.18 | — | — |
| 17 | RDW | Redwire Corporation | Industrials | 1.98% | $785,647.88 | $2.10B | — |
| 18 | VOYG | Voyager Technologies, Inc. | Industrials | 1.62% | $643,836.19 | $1.55B | — |
| 19 | SSIT | Seraphim Space Investment Trust PLC | Financial Services | 1.48% | $587,874.63 | — | — |
| 20 | YSS | York Space Systems Inc. | Industrials | 1.26% | $501,070.61 | $766.5M | — |
| 21 | BKSY | BlackSky Technology Inc. | Industrials | 1.23% | $488,749.53 | $708.8M | — |
| 22 | GILT | Gilat Satellite Networks Ltd | Technology | 1.17% | $465,259.98 | — | — |
| 23 | SATL | Satellogic Inc. | Industrials | 1.09% | $433,821.35 | $590.4M | — |
| 24 | 099320 | Satrec Initiative Co. Ltd | Industrials | 1.00% | $398,487.66 | — | — |
| 25 | SPIR | Spire Global, Inc. | Industrials | 0.88% | $348,567.40 | $350.1M | — |
| 26 | FGXXX | First American Funds Inc. - Government Obligations Fund | Other | 0.61% | $241,493.22 | — | — |
Weights as a percentage of net assets. Value held = weight × net assets ($39.7M). Market cap and P/E from each company's latest fundamentals (U.S.-listed stocks).
MARS sector breakdown
| Sector | Weight | Holdings | Largest |
|---|---|---|---|
| Industrials | 64.0% | 15 | SPCX, RKLB, OHB |
| Communication Services | 17.7% | 5 | GSAT, IRDM, 9412 |
| Technology | 7.9% | 3 | VSAT, TSAT, GILT |
| Financial Services | 6.9% | 2 | NPA, SSIT |
| Other | 0.6% | 1 | FGXXX |
Sum of the weights of the holdings in each sector.
MARS top industries
MARS overlap with other ETFs
| ETF | Fund | Overlap | Shared holdings | Expense ratio |
|---|---|---|---|---|
| ORBX | Global X Space Tech ETF | 79.6% | 22 of 30 | — |
| WARP | VanEck Space ETF | 71.7% | 15 of 18 | — |
| UFO | Procure Space ETF | 52.4% | 25 of 57 | 0.76% |
| QQQ | Invesco QQQ ETF | 2.8% | 2 of 101 | 0.17% |
| IWM | iShares Russell 2000 ETF | 0.5% | 9 of 1,962 | 0.19% |
| VTI | Vanguard Total Stock Market ETF | 0.2% | 15 of 2,941 | 0.03% |
Overlap = sum over shared holdings of the smaller of the two weights. 100% means identical portfolios.
About the MARS portfolio
Roundhill Space & Technology ETF holds 26 positions. The ten largest make up 70.3% of the fund, so it behaves like a portfolio of about 9 equally weighted stocks. The biggest positions are Space Exploration Technologies Corp. (28.23%), Rocket Lab USA, Inc. (8.24%), Globalstar, Inc (5.94%), New Providence Acquisition Corp (5.44%), Viasat, Inc. (4.40%).
By sector, Industrials is 64.0%, Communication Services is 17.7%, Technology is 7.9%. Holdings data is from the fund's latest portfolio as reported by EODHD on October 25, 2026; positions change as the fund rebalances.
Related: MARS chart, MARS overview.
MARS holdings FAQ
How many holdings does MARS have?
MARS holds 26 positions as of October 25, 2026.
What are the top 10 holdings of MARS?
The ten largest holdings are Space Exploration Technologies Corp. (28.23%), Rocket Lab USA, Inc. (8.24%), Globalstar, Inc (5.94%), New Providence Acquisition Corp (5.44%), Viasat, Inc. (4.40%), OHB SE (4.37%), MDA Ltd (3.54%), Iridium Communications Inc (3.46%), Planet Labs PBC (3.41%), SKY Perfect JSAT Holdings Inc. (3.23%). Together they are 70.3% of the fund.
What percentage of MARS is Space Exploration Technologies Corp.?
Space Exploration Technologies Corp. is the largest holding at 28.23% of net assets, about $11.2M of the fund's $39.7M.
Which sector is the largest in MARS?
Industrials is the largest sector at 64.0%, followed by Communication Services (17.7%) and Technology (7.9%), based on the sectors of the individual holdings.
How concentrated is MARS?
The top 10 holdings are 70.3% of the fund. By the effective number of holdings (1 divided by the sum of squared weights) MARS behaves like a portfolio of about 9 equally weighted stocks.