13F Insight
DOSSIER · 13F Holders · Q2 2026
MARA 2.125 09/01/31

MARA HOLDINGS INC

24 institutions still hold MARA HOLDINGS INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 565788AD8·24 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$345M
visible holders
Holders
24
filers reporting
Concentration
16.11%
WHITEBOX ADVISORS LLC #1
top holder share
AI Holders Summary · Q2 2026

24 institutions reported MARA 2.125 09/01/31 in Q2 2026. WHITEBOX ADVISORS LLC leads at 16.1% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
WHITEBOX ADVISORS LLC
CIK 0001257391
$56M50.0M0.73%Q2 202602
LINDEN ADVISORS LP
CIK 0001279396
$54M48.6M0.28%Q2 202603
Context Capital Management, LLC
CIK 0001301396
$47M41.9M0.91%Q2 202604
ARISTEIA CAPITAL, L.L.C.
CIK 0001080171
$40M35.7M0.52%Q2 202605
Isabella Capital Management LLP
CIK 0002134988
$28M25.0M14.85%Q2 202606
ADVENT CAPITAL MANAGEMENT /DE/
CIK 0001097278
$18M16.3M0.41%Q2 202607
CAPSTONE INVESTMENT ADVISORS, LLC
CIK 0001426196
$15M13.3M0.03%Q2 202608
Point72 Asset Management, L.P.
CIK 0001603466
$12M14.2M0.02%Q1 202609
Sculptor Capital LP
CIK 0001054587
$11M10.0M0.09%Q2 202610
CSS LLC/IL
CIK 0001103646
$11M10.0M0.43%Q2 202611
CITIGROUP INC
CIK 0000831001
$11M9.6M0.00%Q2 202612
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$10M9.4M0.01%Q2 202613
SSI INVESTMENT MANAGEMENT LLC
CIK 0000938487
$10M8.8M0.57%Q2 202614
Calamos Advisors LLC
CIK 0001316507
$8M7.0M0.03%Q2 202615
BlackRock, Inc.
CIK 0002012383
$7M5.9M0.00%Q2 202616
FMR LLC
CIK 0000315066
$3M3.1M0.00%Q2 202617
MORGAN STANLEY
CIK 0000895421
$3M2.3M0.00%Q2 202618
BALYASNY ASSET MANAGEMENT L.P.
CIK 0001218710
$1M1.0M0.00%Q2 202619
Central Pacific Bank - Trust Division
CIK 0002020066
$648K583K0.07%Q2 202620
GOLDMAN SACHS GROUP INC
CIK 0000886982
$249K224K0.00%Q2 2026
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