# MARS (Roundhill Space & Technology ETF)

Roundhill · Thematic ETFs · data as of Sep 11, 2026

MARS holds 30 stocks, and 100% of its weight is outside the S&P 500.

## Key facts

- MARS, already in the S&P 500: 0.0%, as of Sep 11, 2026.
- MARS, active share vs the S&P 500: 100.0%, as of Sep 11, 2026.
- MARS, top ten holdings: 68.5%, as of Sep 11, 2026.
- MARS, total return, since launch: +1.9%, as of Sep 11, 2026.
- MARS, net assets: $75m (SEC filing, whole fund, as filed for Jun 30, 2026).
- MARS, expense ratio: 0.75% (485BPOS XBRL, Jan 8, 2026).

## MARS over each window to Sep 11, 2026

| Window | Total return | S&P 500 | Gap to S&P 500 | Gap to Nasdaq-100 |
| --- | --- | --- | --- | --- |
| 3 months | −24.5% | +3.3% | −27.8 pts | −23.8 pts |
| 6 months | +1.8% | +16.0% | −14.2 pts | −18.9 pts |
| Since launch | +1.9% | +12.8% | −10.9 pts | −15.8 pts |

## Every published field

| Field | Value | Source |
| --- | --- | --- |
| Theme | Space | ETFIQ, editorial |
| Launched | Mar 5, 2026 | ETFIQ |
| Already in the S&P 500, by weight | 0.0% | ETFIQ |
| Active share vs the S&P 500 | 100.0% | ETFIQ |
| Already in the Nasdaq-100, by weight | 0.0% | ETFIQ |
| Active share vs the Nasdaq-100 | 100.0% | ETFIQ |
| Top ten holdings weight | 68.5% | ETFIQ |
| Holdings | 30 | ETFIQ |
| Holdings as of | Jun 30, 2026 | SEC N-PORT |
| Top holdings | SPACEX 22.8%, Rocket Lab Corp 10.2%, AST SpaceMobile Inc 8.0%, Viasat Inc 5.5%, Planet Labs PBC 5.1%, Globalstar Inc 4.3%, Iridium Communications Inc 3.5%, MDA Space Ltd 3.2%, Intuitive Machines Inc 2.9%, Firefly Aerospace Inc 2.9% | ETFIQ |
| Net assets | $75m | SEC filing, whole fund, as filed for Jun 30, 2026 |
| Below its all-time high | −44.6% | ETFIQ |
| Expense ratio | 0.75% | 485BPOS XBRL, Jan 8, 2026 |
| Fee for the part that differs from the S&P 500, active expense ratio | 0.75% | ETFIQ |
| Closest funds by holdings overlap | ORBX 82%, WARP 80%, UFO 54%, NASA 51%, FSPC 30% | ETFIQ |

## Questions

### How much of MARS is in S&P 500 companies?

By its holdings filed for Jun 30, 2026, 0% of MARS by weight is stocks the S&P 500 already holds. Its active share against the index is 100%, so that share is the part doing something different.

### What does MARS hold?

30 positions as filed for Jun 30, 2026, with the top ten at 68% of the fund. The largest are SPACEX at 22.8%, Rocket Lab Corp at 10.2%, AST SpaceMobile Inc at 8.0%.

### Has MARS beaten the S&P 500?

Over the year to Sep 11, 2026 MARS returned +1.9% with distributions reinvested, against +12.8% for the S&P 500, so it finished behind the index by 10.9 points.

### What does MARS cost?

The prospectus expense ratio is 0.75% a year. Because 100% of the fund differs from the S&P 500, the fee on that differing part works out at 0.75%.


## Cite this page

ETFIQ, MARS, data as of Sep 11, 2026. https://etfiq.com/funds/MARS
Free to use with attribution; the underlying files are at https://etfiq.com/data/.

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