18 institutions reported holding $6.9M of MAX S&P 500 4X LEVERAGED ETN (XXXX) in SEC 13F filings for 2026-06-30. Largest institutional holders: Millington Financial Advisors, LLC ($3.3M), JANE STREET GROUP, LLC ($1.9M), HRT FINANCIAL LP ($546,000), GTS SECURITIES LLC ($469,436), StoneX Group Inc. ($272,008). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Millington Financial Advisors, LLC | $3.3M | 103,644 | Added |
| 2 | JANE STREET GROUP, LLC | $1.9M | 55,900 | Added |
| 3 | HRT FINANCIAL LP | $546,000 | 16,455 | New |
| 4 | GTS SECURITIES LLC | $469,436 | 14,075 | New |
| 5 | StoneX Group Inc. | $272,008 | 8,259 | New |
| 6 | Tower Research Capital LLC (TRC) | $196,821 | 5,923 | Trimmed |
| 7 | SUMMIT SECURITIES GROUP LLC | $83,075 | 2,500 | Added |
| 8 | MERCER GLOBAL ADVISORS INC /ADV | $49,845 | 1,500 | New |
| 9 | FIFTH THIRD BANCORP | $29,841 | 898 | Hold |
| 10 | HOLLENCREST CAPITAL MANAGEMENT | $13,026 | 392 | Trimmed |
| 11 | TOTH FINANCIAL ADVISORY CORP | $5,650 | 170 | Added |
| 12 | BNP PARIBAS FINANCIAL MARKETS | $997 | 30 | New |
| 13 | TWO SIGMA SECURITIES, LLC | $0 | 0 | Exited |
| 14 | CITADEL ADVISORS LLC | $0 | 0 | Exited |
| 15 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $0 | 0 | Exited |
| 16 | IMC-Chicago, LLC | $0 | 0 | Exited |
| 17 | SIGNATUREFD, LLC | $0 | 0 | Exited |
| 18 | UBS Group AG | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30