DOSSIER · 13F Holders · Q2 2026
CBOO

CALAMOS ETF TR

7 institutions still hold CALAMOS ETF TR as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 12811T613·7 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$3M
visible holders
Holders
7
filers reporting
Concentration
30.50%
SUSQUEHANNA INTERNATIONAL GROUP, LLP #1
top holder share
AI Holders Summary · Q2 2026

7 institutions reported CBOO in Q2 2026. SUSQUEHANNA INTERNATIONAL GROUP, LLP leads at 30.5% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$803K33K0.00%Q2 2026
02
Calamos Advisors LLC
CIK 0001316507
$585K24K0.00%Q2 2026
03
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$507K21K0.00%Q1 2026
04
Rooted Wealth Advisors, Inc.
CIK 0001963732
$328K13K0.08%Q2 2026
05
HARBOUR INVESTMENTS, INC.
CIK 0000810121
$163K7K0.00%Q2 2026
06
Ankerstar Wealth, LLC
CIK 0002053917
$152K6K0.13%Q2 2026
07
UBS Group AG
CIK 0001610520
$95K4K0.00%Q2 2026