Roundhill Space & Tcnlgy ETFMARSETF
13F holders, Q2 2026 (June 30)18holders +14
16new positions
2sold out
1famous investor
$32.31avg. 13F price*
At the end of Q2 2026, 18 institutions reported holding Roundhill Space & Tcnlgy ETF (MARS) in their 13F filings, up 14 from Q1 2026. 16 opened new positions and 2 sold out. The largest holders were Susquehanna International Group, LLP ($7.9M), Old Mission Capital LLC ($3.7M) and Jane Street Group, LLC ($3.1M). One famous investor held it Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Roundhill Space & Tcnlgy ETF
- CUSIP
- 77926X338
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 16 | $14.3M |
| Exits | 2 | $2.4M |
All 13F filers, Q1 2026 → Q2 2026: 510,473 shares bought and 93,101 shares sold, net +417,372 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 18 holders
| Susquehanna International Group, LLP | 0.01% | New | 245,624 | $7.9M |
| Old Mission Capital LLC | 0.09% | New | 113,376 | $3.7M |
| Jane Street Group, LLC | 0.00% | Add +174.3% | 96,422 | $3.1M |
| Citadel Advisors | 0.00% | New | 25,549 | $825K |
| Mgo One Seven LLC | 0.01% | New | 22,912 | $740K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | New | 12,280 | $397K |
| Prelude Capital Management, LLC | 0.02% | New | 10,000 | $323K |
| Simplex Trading, LLC | 0.01% | New | 8,538 | $276K |
| UBS Group AG | 0.00% | Add +414.0% | 8,486 | $274K |
| Group One Trading LLC | 0.00% | New | 3,010 | $97K |
| Osaic Holdings, Inc. | 0.00% | New | 558 | $18K |
| Steward Partners Investment Advisory, LLC | 0.00% | New | 215 | $7K |
| AE Wealth Management LLC | 0.00% | New | 130 | $4K |
| CNB Bank | 0.00% | New | 100 | $3K |
| NFSG Corp | 0.00% | New | 30 | $969 |
| Ameritas Advisory Services, LLC | 0.00% | New | 30 | $969 |
| Farther Finance Advisors, LLC | 0.00% | New | 8 | $246 |
| Main Street Group, LTD | 0.00% | New | 2 | $65 |
"% of holder's portfolio" is MARS's weight in each manager's 13F, not the share of Roundhill Space & Tcnlgy ETF the manager owns.