DOSSIER · 13F-HR · Q1 2026

MARINER INVESTMENT GROUP LLC

$346M in tracked AUM across 108 positions as of Q1 2026.

MI
CIK 0001096978 · last filed Mar 31, 2026
Total AUM
$346M
as of Q1 2026
Holdings
108
positions
Whale Score
61
61
tracked
Activity
no data
changes this Q
AI Analysis · Q1 2026

1. Portfolio Overview

Mariner Investment Group LLC manages a concentrated portfolio valued at approximately $287.52 million as of September 30, 2025. The portfolio experienced modest growth of +2.1% over the quarter, increasing from $281.70 million. The fund exhibits a high level of active management and turnover, evidenced by a dramatic restructuring where 26 new positions were initiated and 32 positions were sold during the quarter.

The portfolio is highly concentrate...

2. Key Holdings

The portfolio is dominated by two distinct macro plays: cryptocurrency exposure via ETFs and broad U.S. equity market exposure.

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
IBIT
ISHARES BITCOIN TRUST ETF
$120M3.1M34.8%
02
BABA 0.5 06/01/31
ALIBABA GROUP HLDG LTD
$35M25.0M10.0%
03
FLR 1.125 08/15/29
FLUOR CORP
$31M25.1M9.0%
04
GPN 1.5 03/01/31
GLOBAL PMTS INC
$22M25.0M6.4%
05
SNOW 0 10/01/27
SNOWFLAKE INC
$18M15.0M5.1%
06
RITM
RITHM CAPITAL CORP
$13M1.3M3.7%
07
ON 0.5 03/01/29
ON SEMICONDUCTOR CORP
$12M12.5M3.5%
08
LYV 3.125 01/15/29
LIVE NATION ENTERTAINMENT IN
$8M5.0M2.2%
09
FOUR
SHIFT4 PMTS INC
$7M470K2.0%
10
SHY
ISHARES TR
$6M76K1.8%

Filing history

2026Q1Mar 31
$346M 79.8%
108 positionsView →
2025Q4Dec 31
$1.7B 495.7%
111 positionsView →
2025Q3Sep 30
$288M 2.1%
48 positionsView →
2025Q2Jun 30
$282M 10.8%
66 positionsLocked
2025Q1Mar 31
$254M 49.6%
36 positionsLocked
2024Q4Dec 31
$505M 35.9%
46 positionsLocked
2024Q3Sep 30
$371M 19.8%
31 positionsLocked
2024Q2Jun 30
$463M 43.8%
22 positionsLocked
2024Q1Mar 31
$322M 13.0%
28 positionsLocked
2023Q4Dec 31
$370M 88.9%
27 positionsLocked
2023Q1Mar 31
$3.3B 9771132.0%
24 positionsLocked
2022Q4Dec 31
$34K 100.0%
93 positionsLocked
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