# CALAMOS ETF TR (CBOO)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/CBOO/

- Reporting holders: 8
- Reported value: $2.8M
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [SUSQUEHANNA INTERNATIONAL GROUP, LLP](https://holderbook.com/funds/1446194-susquehanna-international-group-llp/) | $802.5K | 32,770 | 0.0% | 1 |
| [JANE STREET GROUP, LLC](https://holderbook.com/funds/1595888-jane-street-group-llc/) | $658.1K | 26,873 | 0.0% | 3 |
| [Calamos Advisors LLC](https://holderbook.com/funds/1316507-calamos-advisors-llc/) | $584.7K | 23,874 | 0.0% | 3 |
| [Rooted Wealth Advisors, Inc.](https://holderbook.com/funds/1963732-rooted-wealth-advisors-inc/) | $327.9K | 13,389 | 0.1% | 3 |
| [HARBOUR INVESTMENTS, INC.](https://holderbook.com/funds/810121-harbour-investments-inc/) | $162.7K | 6,644 | 0.0% | 3 |
| [Ankerstar Wealth, LLC](https://holderbook.com/funds/2053917-ankerstar-wealth-llc/) | $151.7K | 6,195 | 0.1% | 3 |
| [UBS Group AG](https://holderbook.com/funds/1610520-ubs-group-ag/) | $94.8K | 3,873 | 0.0% | 2 |
| [BURKETT FINANCIAL SERVICES, LLC](https://holderbook.com/funds/1762716-burkett-financial-services-llc/) | $23.7K | 968 | 0.0% | 3 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 8 | $2.8M |
| Q1 2026 | 7 | $1.9M |
| Q4 2025 | 9 | $4.0M |
| Q2 2025 | 1 | $226.8K |
| Q1 2025 | 1 | $262.8K |