Funds · 13F filer · New York, NY

Mariner Investment Group LLC

$271.4M in 64 U.S. stocks and ETFs at the end of June 30, 2026, as reported to the SEC.1

1y return−11.3%S&P 500 +20.9%

These returns are for its stock picks as disclosed on Form 13F: last quarter's holdings, valued at this quarter's prices. They miss trades within each quarter, short positions, options, bonds, cash and fees, so they aren't the returns its clients got.

$100 invested in its stock picks

Since December 31, 2023: $105 against $157 in the S&P 500.2

Mariner Investment Group LLCS&P 500 (SPY)
$100$15720232026

Top holdings

At the end of June 30, 2026. Change is in shares since the quarter before.2

StockValueShare of portfolioChange
IBITIshares Bitcoin Trust Etf$104.2M38.4%
SPYState Str Spdr S&p 500 Etf T$57.1M21.0%New
RITMRithm Capital Corp$12.5M4.6%
SHYIshares Tr$8.3M3.1%+33.5%
CIMChimera Invt Corp$5.1M1.9%
MUBIshares Tr$4.9M1.8%New
ETREntergy Corp New$4.6M1.7%
VCSHVanguard Scottsdale Fds$4.2M1.6%+1.9%
LECOLincoln Elec Hldgs Inc$4.2M1.5%+161.8%
WMBWilliams Cos Inc$4.1M1.5%+22.2%
GLWCorning Inc$3.6M1.3%New
Shift4 Pmts IncCUSIP 82452J307$3.4M1.3%New
MTZMastec Inc$3.3M1.2%+33.3%
AEROGrupo Aeromexico Sab De Cv$3.0M1.1%
FERGFerguson Enterprises Inc$2.8M1.0%New
EWZIshares Inc$2.8M1.0%New
RWTRedwood Trust Inc$2.6M1.0%
FOURShift4 Pmts Inc$2.4M0.9%−65.5%
IEIIshares Tr$2.4M0.9%+169.1%
IEFIshares Tr$2.1M0.8%New
MFAMfa Finl Inc$2.0M0.7%
PMTPennymac Mtg Invt Tr$2.0M0.7%
HYGIshares Tr$2.0M0.7%New
TOLToll Brothers Inc$1.6M0.6%New
BHFBrighthouse Finl Inc$1.6M0.6%New

Best picks still held

How each current holding has done since the quarter it first appeared in its filings (up to six years back).

StockHeld sinceReturn sinceNow worth
MTZMastec IncJune 30, 2025+144.1%$3.3M
CORZCore Scientific Inc NewMarch 31, 2026+71.1%$640K
ETREntergy Corp NewDecember 31, 2024+51.5%$4.6M
LUMNLumen Technologies IncDecember 31, 2024+44.6%$1.3M
LECOLincoln Elec Hldgs IncJune 30, 2025+28.1%$4.2M
WMBWilliams Cos IncMarch 31, 2025+24.4%$4.1M
RRCRange Res CorpSeptember 30, 2024+20.9%$1.1M
IGVIshares TrMarch 31, 2026+13.2%$1.1M
DXDynex Cap IncMarch 31, 2026+2.7%$1.2M
MFAMfa Finl IncMarch 31, 2026+1.1%$2.0M

Sold off last quarter

  • CATCaterpillar Inc was $2.7M
  • SOLSSolstice Advanced Matls Inc was $1.1M
  • LGNLegence Corp was $847K
  • MCHPMicrochip Technology Inc. was $840K
  • MTSIMacom Tech Solutions Hldgs I was $666K
  • WINGWingstop Inc was $155K

Quarter by quarter

QuarterIts picksS&P 500
June 30, 2026−5.7%+14.8%
March 31, 2026+2.0%−4.6%
December 31, 2025−12.2%+2.4%
September 30, 2025+5.1%+7.8%
June 30, 2025+6.7%+10.5%
March 31, 2025−4.5%−4.6%
December 31, 2024+1.8%+2.1%
September 30, 2024+3.1%+5.4%
June 30, 2024+2.2%+4.0%
March 31, 2024+8.3%+10.0%
June 30, 2023+9.0%+8.3%
March 31, 2023+3.7%+7.0%
December 31, 2022+0.6%+7.1%
September 30, 2022−3.6%−5.3%
June 30, 2022−12.2%−16.5%
March 31, 2022−7.4%−4.9%
September 30, 2021−1.2%+0.3%

Sources

Every number on this page points here. Each one links to the public record.

  1. 1
    CIK 1096978
  2. 2
    Filed July 27, 2026 · accession 0001096978-26-000006