MARINER INVESTMENT GROUP LLC

CIK 1096978 · View on SEC EDGAR ↗

Portfolio value
$463.1M
#3,971 of 9,443 by 13F value · top 42.1%
Positions
123
As of
June 30, 2026

Portfolio value QoQ: +33.9% 13F does not disclose cash

Top 10 holdings weight
72.58%
Top 25 holdings weight
86.16%
Positions above 1%
14
Effective number of positions
11.4

Based on 13F long-equity holdings only (cash, bonds, shorts not disclosed)

Turnover Q2 2026: 6.87% Est. buys $189,550,983 · sells $27,780,915

Median holding: 2.0 quarters Tracked Q4 2024–Q2 2026 · 46.2% still held

New positions
50
Increased
22
Decreased
13
Closed
23

Put-notional exposure: 1.2% puts 13F reports option positions at underlying notional value — may include hedges, not necessarily bearish bets

On this page

Sector breakdown

Real Estate
5.7%
Industrials
5.6%
Technology
1.9%
Energy
1.5%
Utilities
1.1%
Financial Services
0.9%
Communications
0.7%
Materials
0.5%
Consumer products
0.4%
Telecommunication
0.4%
Financials
0.3%
Consumer Discretionary
0.3%
Retail
0.2%
Packaging
0.2%
Communication Services
0.1%
Consumer Staples
0.1%
Other/Unmapped
80.2%

Full portfolio 123 positions

Type Streak 8Q trend
IBIT iShares Bitcoin Trust ETF $104,176,128 22.49% 3,129,352 $-16,053,576
SPY SPY $57,109,236 12.33% 76,475
Unknown issuer (CUSIP: 01609WBG6) $35,430,000 7.65% 30,000,000 $711,250 Up ×3
Unknown issuer (CUSIP: 343412AJ1) $33,301,425 7.19% 25,100,000 $2,296,650
Unknown issuer (CUSIP: 25809KAB1) $24,656,250 5.32% 25,000,000 Up ×1
Unknown issuer (CUSIP: 37940XAU6) $22,500,000 4.86% 25,000,000 $423,724
QQQ Invesco QQQ Trust, Series 1 $19,474,000 4.21% 1,400,000 Call option
Unknown issuer (CUSIP: 76954AAD5) $16,015,868 3.46% 15,000,000 Up ×1
RITM Rithm Capital Corp. Common Stock $12,512,954 2.70% 1,332,583 $-119,933
Unknown issuer (CUSIP: 00971TAQ4) $10,955,626 2.37% 7,500,000 Up ×1
SHY iShares 1-3 Year Treasury Bond ETF $8,309,450 1.79% 101,199 $2,049,240 Up ×2
Unknown issuer (CUSIP: 538034BC2) $5,980,000 1.29% 5,000,000 $580,000
CIM Chimera Investment Corporation Common Stock $5,054,513 1.09% 378,899 $299,331
MUB $4,891,759 1.06% 45,454 Up ×1
ETR Entergy Corporation Common Stock $4,594,400 0.99% 40,000 $100,000
VCSH Vanguard Short-Term Corporate Bond ETF $4,213,643 0.91% 53,317 $66,157 Up ×1
LECO Lincoln Electric Holdings, Inc. - Common Shares $4,169,835 0.90% 15,705 $2,675,355 Up ×1
WMB Williams Companies, Inc. (The) Common Stock $4,088,700 0.88% 55,000 $813,600 Up ×1
GLW Corning Incorporated Common Stock $3,576,020 0.77% 14,000
FOURPRA $3,424,850 0.74% 55,000 Up ×1
MTZ MasTec, Inc. Common Stock $3,328,480 0.72% 8,000 $1,398,040 Up ×1
AERO Grupo Aeromexico, S.A.B. de C.V. American Depositary Shares (each representing ten (10) Common Shares) $3,047,040 0.66% 169,280 $675,427
FERG Ferguson Enterprises Inc. Common Stock $2,847,960 0.61% 12,000
EWZ $2,760,000 0.60% 80,000 Up ×1
RWT Redwood Trust, Inc. Common Stock $2,608,711 0.56% 550,361 $-478,814
COHR Coherent Corp. Common Stock $2,440,025 0.53% 36,500 Call option $1,904,525 Down ×1
FOUR Shift4 Payments, Inc. Class A Common Stock $2,432,000 0.53% 50,000 $-3,908,850 Down ×1
IEI iShares 3-7 Year Treasury Bond ETF $2,413,715 0.52% 20,551 $1,507,848 Up ×1
CIEN Ciena Corporation Common Stock $2,142,000 0.46% 36,000 Call option Up ×1
IEF iShares 7-10 Year Treasury Bond ETF $2,136,904 0.46% 22,596 Up ×1
Unknown issuer (CUSIP: 70932AAH6) $2,046,600 0.44% 2,000,000 $1,001,011 Up ×1
MFA MFA Financial, Inc. $2,034,900 0.44% 210,000 $23,100
PMT PennyMac Mortgage Investment Trust Common Shares of Beneficial Interest $2,030,400 0.44% 180,000 $-68,400
HYG $1,967,262 0.42% 24,600
Unknown issuer (CUSIP: 758075AF2) $1,827,000 0.39% 1,800,000 $0
TOL Toll Brothers, Inc. Common Stock $1,647,500 0.36% 10,000 Up ×1
Unknown issuer (CUSIP: 75737FAE8) $1,587,425 0.34% 1,645,000 $9,870
BHF Brighthouse Financial, Inc. - Common Stock $1,582,500 0.34% 25,000
TLT iShares 20+ Year Treasury Bond ETF $1,562,474 0.34% 18,080
Q Qnity Electronics, Inc. Common Stock $1,555,000 0.34% 100,000 Call option $1,413,750 Up ×1
FIX Comfort Systems USA, Inc. Common Stock $1,486,463 0.32% 750
IREN IREN Limited - Ordinary Shares $1,371,900 0.30% 30,000
LUMN Lumen Technologies, Inc. Common Stock $1,344,000 0.29% 175,000 $822,750 Up ×1
DX Dynex Capital, Inc. Common Stock $1,245,450 0.27% 95,000 $33,250
GEV GE Vernova Inc. Common Stock $1,174,860 0.25% 1,000 Up ×1
IGV $1,132,500 0.24% 12,500 $131,875
RRC Range Resources Corporation Common Stock $1,115,700 0.24% 30,000 $-239,700
ENTG Entegris, Inc. - Common Stock $1,085,000 0.23% 50,000 Call option $995,000 Up ×1
EQT EQT Corporation Common Stock $1,063,400 0.23% 20,000 $-209,400
Unknown issuer (CUSIP: N53745950) $1,045,000 0.23% 200,000 Put option Up ×1
GEV GE Vernova Inc. Common Stock $846,000 0.18% 10,000 Call option Up ×1
SABR Sabre Corporation - Common Stock $836,000 0.18% 400,000 Up ×1
WMT Walmart Inc. - Common Stock $822,721 0.18% 7,264 $-80,049
CAT Caterpillar, Inc. Common Stock $790,113 0.17% 15,500 Call option $741,988 Up ×1
WIX Wix.com Ltd. - Ordinary Shares $777,823 0.17% 17,144 $-32,807 Up ×1
KRMN Karman Holdings Inc. Common Stock $748,800 0.16% 15,000 $348,550 Up ×1
FOUR Shift4 Payments, Inc. Class A Common Stock $667,500 0.14% 150,000 Call option $179,250 Down ×1
OLN Olin Corporation Common Stock $665,450 0.14% 254,000 Put option $495,750 Up ×3
Q Qnity Electronics, Inc. Common Stock $653,240 0.14% 4,000 Up ×1
CORZ Core Scientific, Inc. - Common Stock $639,750 0.14% 25,000 $340,550 Up ×1
DOW Dow Inc. Common Stock $620,733 0.13% 268,500 Put option $550,883 Up ×1
CIFR Cipher Mining Inc. - Common Stock $612,500 0.13% 25,000
PWR Quanta Services, Inc. Common Stock $607,500 0.13% 30,000 Call option $21,000
Unknown issuer (CUSIP: 682189AU9) $603,750 0.13% 500,000 $-11,646,250 Down ×1
CSCO Cisco Systems, Inc. - Common Stock $587,300 0.13% 5,000
CCK Crown Holdings, Inc. $559,100 0.12% 5,000 $57,850
AES The AES Corporation Common Stock $513,100 0.11% 35,000 $19,950
SOLS Solstice Advanced Materials Inc. - Common Stock $502,900 0.11% 94,000 Call option Up ×1
CRWV CoreWeave, Inc. - Class A Common Stock $497,700 0.11% 5,000
HYG $492,000 0.11% 1,900,000 Put option $-380,816 Down ×1
FLEX Flex Ltd. - Ordinary Shares $486,210 0.10% 3,000 Up ×1
WOLF Wolfspeed, Inc. Common Stock New $482,500 0.10% 10,000 $74,500 Down ×1
XPRO Expro Group Holdings N.V. Common Stock $443,100 0.10% 30,000 $94,900 Up ×1
IHRT iHeartMedia, Inc. - Class A Common Stock $437,855 0.09% 102,064 $253,375 Up ×1
BKLN $421,160 0.09% 1,423,200 Put option $321,160 Up ×1
TWO Two Harbors Investment Corp $406,750 0.09% 32,776 $32,448
MCD McDonald's Corporation Common Stock $405,465 0.09% 1,500
MITT TPG Mortgage Investment Trust, Inc. Common Stock $380,904 0.08% 48,094 $29,337
NE Noble Corporation plc A Ordinary Shares $373,000 0.08% 10,000 $-117,700
TDS Telephone and Data Systems, Inc. Common Shares $370,100 0.08% 10,000 $159,600 Up ×1
NOK Nokia Corporation Sponsored American Depositary Shares $365,000 0.08% 500,000 Call option Up ×1
PKG Packaging Corporation of America Common Stock $357,420 0.08% 1,500 $39,090
USAR USA Rare Earth, Inc. - Common Stock $323,700 0.07% 15,000 Up ×1
APO Apollo Global Management, Inc. (New) Common Stock $286,000 0.06% 40,000 Put option Up ×1
Unknown issuer (CUSIP: 00835T107) $282,600 0.06% 13,528 Up ×1
SPY SPY $275,705 0.06% 170,000 Put option $-4,854,520 Down ×1
PMTS CPI Card Group Inc. - Common Stock $271,179 0.06% 13,050 $9,273 Down ×1
POST Post Holdings, Inc. Common Stock $266,250 0.06% 75,000 Put option $106,875
TSEM Tower Semiconductor Ltd. - Ordinary Shares $260,640 0.06% 1,000 Up ×1
FSK FS KKR Capital Corp. Common Stock $257,500 0.06% 700,000 Put option $-575,000
ENPH Enphase Energy, Inc. - Common Stock $246,200 0.05% 5,000 Up ×1
HWM Howmet Aerospace Inc. Common Stock $235,500 0.05% 70,000 Call option Up ×1
ARES Ares Management Corporation Class A Common Stock $222,000 0.05% 40,000 Put option Up ×1
AOMR Angel Oak Mortgage REIT, Inc. Common Stock $161,206 0.03% 17,754 $15,268
STM STMicroelectronics N.V. Common Stock $161,025 0.03% 28,500 Call option Up ×1
QQQ Invesco QQQ Trust, Series 1 $152,224 0.03% 26,800 Put option Up ×1
LEN Lennar Corporation Class A Common Stock $151,813 0.03% 123,500 Put option $-399,237
OCSL Oaktree Specialty Lending Corporation - Closed End Fund $136,800 0.03% 304,000 Put option $101,800 Up ×1
BXSL Blackstone Secured Lending Fund Common Shares of Beneficial Interest $105,625 0.02% 325,000 Put option $-278,750
ARCC Ares Capital Corporation - Closed End Fund $95,000 0.02% 200,000 Put option

Conviction holdings

Positions increased for 3+ consecutive quarters.

Share counts are as reported in 13F filings (not split-adjusted)

Security Value % of portfolio Streak
None $35,430,000 7.65% up ×3
OLN $665,450 0.14% up ×3

Biggest new bets

New positions opened this quarter, largest first.

Security Value Shares % of portfolio
SPY $57,109,236 76,475 12.33%
Unknown issuer (CUSIP: 25809KAB1) $24,656,250 25,000,000 5.32%
QQQ $19,474,000 1,400,000 4.21%
Unknown issuer (CUSIP: 76954AAD5) $16,015,868 15,000,000 3.46%
Unknown issuer (CUSIP: 00971TAQ4) $10,955,626 7,500,000 2.37%
MUB $4,891,759 45,454 1.06%
GLW $3,576,020 14,000 0.77%
FOURPRA $3,424,850 55,000 0.74%
FERG $2,847,960 12,000 0.61%
EWZ $2,760,000 80,000 0.60%
CIEN $2,142,000 36,000 0.46%
IEF $2,136,904 22,596 0.46%
HYG $1,967,262 24,600 0.42%
TOL $1,647,500 10,000 0.36%
BHF $1,582,500 25,000 0.34%

Top movers (QoQ)

Security Action Shares Δ Value Δ
IBIT Price move only +0 -$16.1M
FOUR Trimmed -95K -$3.9M
LECO Bought more +10K +$2.7M
Price move only +0 +$2.3M
SHY Bought more +25K +$2.0M
COHR Trimmed -6K +$1.9M
IEI Bought more +13K +$1.5M
MTZ Bought more +2K +$1.4M
Bought more +1.0M +$1.0M
LUMN Bought more +100K +$823K

4 positions hidden (data completeness check)

Exited positions

Includes corporate events (mergers, delistings) — not all exits are sells

Closed positions reflect 13F reporting changes; for index managers these are often mechanical (delisting, M&A, index rebalancing), not active decisions.

SecurityQuarter Shares before Value before Price since exit
MSFT March 31, 2026 344,000 $166,365,280 30.2%
LRCX March 31, 2026 736,000 $125,988,480 47.0%
GOOG March 31, 2026 350,000 $109,830,000 18.2%
COST March 31, 2026 125,000 $107,792,500 -5.3%
CSCO March 31, 2026 1,372,000 $105,685,160 43.1%
ASML March 31, 2026 93,000 $99,496,980 32.8%
TXN March 31, 2026 559,000 $96,980,910 36.5%
NVDA March 31, 2026 497,000 $92,690,500 24.4%
LIN March 31, 2026 200,000 $85,278,000 -1.6%
INTC March 31, 2026 2,200,000 $81,180,000 108.3%
HON March 31, 2026 392,000 $76,475,280 -2.9%
AAPL March 31, 2026 248,000 $67,421,280 21.4%
BKLN June 30, 2025 3,081,946 $63,796,282 No longer tracked
MA March 31, 2026 100,000 $57,088,000 15.1%
CTAS March 31, 2026 269,000 $50,590,830 19.9%
LOW March 31, 2026 101,000 $24,357,160 -7.9%
LQD Dec. 31, 2025 188,000 $20,956,360 No longer tracked
IGLB March 31, 2026 400,000 $20,180,000 No longer tracked
VOO Sept. 30, 2025 23,310 $13,240,779 No longer tracked
FDX March 31, 2025 127,500 $7,796,075 35.1%
BHF Dec. 31, 2025 136,000 $7,218,880 -17.7%
DUK March 31, 2026 76,250 $6,008,263 -6.7%
JFR March 31, 2026 633,488 $4,960,211 1.1%
EQT Sept. 30, 2025 149,910 $3,065,751 -1.1%
EXP March 31, 2025 10,500 $2,590,980 -7.7%
PWR Sept. 30, 2025 6,000 $2,268,480 59.0%
XLU June 30, 2025 925,000 $2,110,750 No longer tracked
AMD Dec. 31, 2025 12,500 $2,022,375 119.8%
VLO Sept. 30, 2025 15,000 $2,016,300 103.2%
DY March 31, 2025 11,000 $1,914,660 166.2%
FIX March 31, 2026 2,000 $1,866,580 22.1%
TRGP Sept. 30, 2025 10,000 $1,740,800 82.7%
RIOT March 31, 2025 250,000 $1,628,000 207.9%
IREN March 31, 2025 250,000 $1,548,000 642.0%
FERG March 31, 2026 6,000 $1,335,780 2.6%
AR March 31, 2026 38,500 $1,326,710 -11.2%
CMCSA March 31, 2026 162,500 $1,311,725 -7.8%
UPS Dec. 31, 2025 110,000 $1,280,300 4.2%
PSX Sept. 30, 2025 10,000 $1,193,000 78.7%
FTAI June 30, 2025 10,000 $1,110,300 77.8%
AD Dec. 31, 2025 21,292 $1,064,813 -34.0%
CMI March 31, 2025 3,000 $1,045,800 91.1%
DOW March 31, 2025 25,500 $1,023,315 -5.9%
DY March 31, 2026 3,000 $1,013,700 19.7%
EXP Sept. 30, 2025 5,000 $1,010,550 -12.1%
EXE March 31, 2025 10,000 $995,500 -14.4%
KR March 31, 2026 15,000 $937,200 -21.2%
ODFL Sept. 30, 2025 5,750 $933,225 47.6%
CNQ March 31, 2025 30,000 $926,100 66.3%
WMT March 31, 2025 10,000 $903,500 17.5%
EXE Sept. 30, 2025 7,500 $877,050 -10.3%
LYB March 31, 2025 11,500 $854,105 -2.9%
LGN June 30, 2026 15,000 $846,900 -29.2%
PEG Sept. 30, 2025 10,000 $841,800 -11.0%
MCHP June 30, 2026 13,000 $839,930 -16.3%
VMI March 31, 2026 2,000 $804,640 21.8%
MTSI June 30, 2026 3,000 $666,210 -29.1%
VRT March 31, 2026 75,000 $663,750 5.5%
WING June 30, 2026 33,500 $653,845 -34.1%
CC March 31, 2026 105,000 $650,950 -27.6%
BLDR June 30, 2026 115,000 $649,750 -21.1%
SVXY Dec. 31, 2025 12,500 $636,750 No longer tracked
SRE March 31, 2025 7,000 $614,040 21.0%
MYD March 31, 2025 50,734 $527,126 No longer tracked
APA Dec. 31, 2025 100,000 $500,000 81.0%
MYI March 31, 2025 40,818 $450,631 -2.4%
TLN June 30, 2026 60,000 $429,000 -17.9%
CCOI June 30, 2026 105,000 $393,750 -28.9%
CRH Dec. 31, 2025 3,000 $359,700 -24.2%
OLN March 31, 2025 10,500 $354,900 -22.7%
SSTK Dec. 31, 2025 16,114 $335,977 -72.3%
UNITXXXX Sept. 30, 2025 75,000 $324,000 No longer tracked
FIX June 30, 2025 1,000 $322,330 213.9%
DHI Sept. 30, 2025 100,000 $320,000 -12.5%
RIG June 30, 2025 100,000 $317,000 132.8%
APH June 30, 2026 50,000 $315,000 -11.6%
MLM March 31, 2026 500 $311,330 -9.9%
CRDO March 31, 2026 2,000 $287,780 146.6%
VMC March 31, 2026 1,000 $285,220 0.3%
CNM Sept. 30, 2025 31,625 $267,507 -17.1%
EWY June 30, 2026 50,000 $262,500 No longer tracked
CIFR March 31, 2025 50,000 $232,000 666.1%
ULCC Sept. 30, 2025 60,000 $217,800 31.7%
WOR March 31, 2026 4,196 $216,388 10.1%
VISN Sept. 30, 2025 25,000 $207,000 -28.1%
DAN Dec. 31, 2025 10,000 $200,400 33.2%
AVGO March 31, 2026 10,000 $180,750 20.4%
ARCC June 30, 2025 1,000,000 $175,000 -9.8%
TXN June 30, 2025 25,000 $170,625 27.7%
CRWV March 31, 2026 27,000 $147,095 16.3%
LEN Sept. 30, 2025 56,100 $133,238 -31.5%
DE June 30, 2026 10,000 $128,500 -1.7%
OKE March 31, 2026 100,000 $127,500 4.8%
HAL March 31, 2026 100,000 $126,000 -8.9%
EIM March 31, 2026 12,181 $118,521 No longer tracked
LYB June 30, 2026 240,000 $110,000 29.9%
TLT Sept. 30, 2025 200,000 $109,000
JETS June 30, 2026 200,000 $104,000 No longer tracked
EQNR Dec. 31, 2025 100,000 $97,500 82.4%
KHC June 30, 2026 200,000 $91,000 7.9%
IWM March 31, 2026 206,500 $90,110 No longer tracked
QQQ March 31, 2026 50,000 $66,750
FMC March 31, 2026 50,000 $66,250 -36.4%
TAC Dec. 31, 2025 100,000 $60,000 0.3%
DVN June 30, 2026 300,000 $58,000 18.9%
XLF June 30, 2025 45,000 $50,025 No longer tracked
VST June 30, 2026 25,000 $48,750 -12.3%
T June 30, 2025 110,000 $41,800 -12.3%
UAL June 30, 2026 25,000 $41,000 -16.9%
SW June 30, 2026 50,000 $37,500 5.6%
FITB June 30, 2026 25,000 $35,625 -2.3%
JEF June 30, 2026 25,000 $33,750 4.9%
XLF Dec. 31, 2025 200,000 $31,000 No longer tracked
COP June 30, 2026 100,000 $29,500 30.3%
APA June 30, 2026 200,000 $27,000 36.0%
CEG June 30, 2026 10,000 $19,000 9.8%
DAL June 30, 2026 25,000 $15,875 -12.3%
CCL March 31, 2025 250,000 $7,500 31.5%
EIX Dec. 31, 2025 22,500 $5,063 23.0%
DOCS March 31, 2026 40,000 $5,000 9.5%
BSLKW March 31, 2026 19,150 $317 No longer tracked