13F Insight
DOSSIER · 13F Holders · Q1 2026
CSGS 3.875 09/15/28

CSG SYSTEMS INTERNATIONA 3.875 09/15/28 CVT

29 institutions still hold CSG SYSTEMS INTERNATIONA 3.875 09/15/28 CVT as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 126349AH2·29 13F holders·last filed Mar 31, 2026
Market cap
—
13F value held
$484M
visible holders
Holders
29
filers reporting
Concentration
16.05%
HBK INVESTMENTS L P #1
top holder share
AI Holders Summary · Q1 2026

29 institutions reported CSGS 3.875 09/15/28 in Q1 2026. HBK INVESTMENTS L P leads at 16.0% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
HBK INVESTMENTS L P
CIK 0001011443
$78M63.9M0.79%Q1 202602
WOLVERINE ASSET MANAGEMENT LLC
CIK 0001279891
$64M52.4M0.61%Q1 202603
BALYASNY ASSET MANAGEMENT L.P.
CIK 0001218710
$61M49.7M0.08%Q1 202604
Invesco Ltd.
CIK 0000914208
$48M39.6M0.00%Q1 202605
Calamos Advisors LLC
CIK 0001316507
$36M30.0M0.13%Q1 202606
MIRABELLA FINANCIAL SERVICES LLP
CIK 0001538853
$33M37.2M3.14%Q1 202607
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$26M21.3M0.02%Q1 202608
JPMORGAN CHASE & CO
CIK 0000019617
$24M19.3M0.00%Q1 202609
TENOR CAPITAL MANAGEMENT Co., L.P.
CIK 0001346554
$21M17.5M0.33%Q1 202610
THRIVENT FINANCIAL FOR LUTHERANS
CIK 0000314984
$19M15.4M0.04%Q1 202611
WELLS FARGO & COMPANY/MN
CIK 0000072971
$12M9.6M0.00%Q1 202612
STATE STREET CORP
CIK 0000093751
$10M8.6M0.00%Q1 202613
CSS LLC/IL
CIK 0001103646
$9M7.5M0.44%Q1 202614
BlackRock, Inc.
CIK 0002012383
$8M6.7M0.00%Q1 202615
KIM, LLC
CIK 0001888968
$7M6.0M0.75%Q1 202616
SSI INVESTMENT MANAGEMENT LLC
CIK 0000938487
$6M5.0M0.42%Q1 202617
WATER ISLAND CAPITAL LLC
CIK 0001222765
$6M5.0M0.64%Q4 202518
FMR LLC
CIK 0000315066
$6M4.8M0.00%Q1 202619
Walleye Capital LLC
CIK 0001758720
$6M4.6M0.02%Q1 202620
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main
CIK 0001694217
$4M3.5M0.00%Q1 2026
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