9 institutions reported holding $5.5M of CALAMOS ETF TR (CBXO) in SEC 13F filings for 2026-06-30. Largest institutional holders: SUSQUEHANNA INTERNATIONAL GROUP, LLP ($3.1M), JANE STREET GROUP, LLC ($1.1M), OLD MISSION CAPITAL LLC ($609,025), Calamos Advisors LLC ($372,145), Ankerstar Wealth, LLC ($174,451). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $3.1M | 140,376 | Added |
| 2 | JANE STREET GROUP, LLC | $1.1M | 49,431 | Added |
| 3 | OLD MISSION CAPITAL LLC | $609,025 | 27,639 | Trimmed |
| 4 | Calamos Advisors LLC | $372,145 | 16,885 | Trimmed |
| 5 | Ankerstar Wealth, LLC | $174,451 | 7,917 | Trimmed |
| 6 | VIMA LLC | $165,725 | 7,521 | New |
| 7 | Farther Finance Advisors, LLC | $8,814 | 400 | Trimmed |
| 8 | Capital Investment Advisory Services, LLC | $6,644 | 302 | New |
| 9 | HARBOUR INVESTMENTS, INC. | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30