Calamos Tax-Aware Collateral ETF (CBOX) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for CBOX. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 4 institutions reported holding CBOX, with 10.7 million shares worth $1.1 billion in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| Calamos Advisors | 10,693,254 | $1.1B | NEW |
| Old Mission Capital | 21,248 | $2M | NEW |
| Susquehanna International Group | 16,485 | $2M | NEW |
| &Partners | 2,980 | $401K | NEW |
Full institutional holdings, insider history, and congressional trades for Calamos Tax-Aware Collateral ETF on SentiSense.