Mariner Investment Group LLC holds a focused book of 75 reported positions worth $426.3M as of Q2 2026 (disclosed Jul 27, 2026, a ~27-day 13F lag). This quarter Aevex Corp-CL A first appears in 13F filings, a listing rather than a purchase; they opened SS SPDR S&P 500 ETF Trust-US and trimmed Shift4 Payments Inc-Class A. Their largest long position is Ishares Bitcoin Trust ETF at 24% of the reported non-option book. They also disclosed $5.6M in put options (a bearish bet) and $31.2M in call options (bullish), shown separately below and excluded from the non-option book.
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
43% mapped to company sectors
+4 sectors below the cut, 2% together
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices (an exit at the prior quarter-end), no cost basis
Other tracked managers holding the same core names as Mariner Investment Group LLC
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| Magnetar Financial LLC | 8 / 75 | $5.3B |
| Narus Financial Partners, LLC | 11 / 75 | $163.7M |
| BBR Partners, LLC | 8 / 75 | $710.7M |
| Gallagher Fiduciary Advisors, LLC | 11 / 75 | $1.2B |
| Park Edge Advisors, LLC | 9 / 75 | $183.1M |
| Hexagon Capital Partners LLC | 11 / 75 | $270.1M |
| Aua Capital Management, LLC | 11 / 75 | $80.6M |
| Benin Management CORP | 11 / 75 | $183.7M |
Ranked by the share of each fund's own book sitting in the names it shares with Mariner Investment Group LLC: only funds sharing at least a tenth of the book qualify. Index giants, bank custody books and market makers are excluded. They hold everything, so their overlap says nothing.
Bars show each position's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Ishares Bitcoin Trust ETF SHS BEN INT | $104.2M | 3.13M | 24.4% | —Held | |
| 2 | State STR SPDR S&P 500 ETF T TR UNIT | $57.1M | 76.5K | 13.4% | ▲New New position | |
| 3 | Alibaba Group Hldg Ltd NOTE 0.500% 6/0 | $35.4M | 30.00M | 8.3% | ▲+20% Added · +5.0M sh | |
| 4 | Fluor Corp NOTE 1.125% 8/1 | $33.3M | 25.10M | 7.8% | —Held | |
| 5 | Doordash Inc NOTE 5/1 | $24.7M | 25.00M | 5.8% | ▲New New position | |
| 6 | Global PMTS Inc NOTE 1.500% 3/0 | $22.5M | 25.00M | 5.3% | —Held | |
| 7 | Rivian Automotive Inc NOTE 3.625%10/1 | $16.0M | 15.00M | 3.8% | ▲New New position | |
| 8 | Rithm Capital Corp COM NEW | $12.5M | 1.33M | 2.9% | —Held | |
| 9 | Akamai Technologies Inc NOTE 0.250% 5/1 | $11.0M | 7.50M | 2.6% | ▲New New position | |
| 10 | Ishares TR 1 3 YR TREAS BD | $8.3M | 101.2K | 1.9% | ▲+33% Added · +25K sh | |
| 11 | Live Nation Entertainment In NOTE 2.875% 1/1 | $6.0M | 5.00M | 1.4% | —Held | |
| 12 | Chimera Invt Corp COM SHS | $5.1M | 378.9K | 1.2% | —Held | |
| 13 | Ishares TR NATIONAL MUN ETF | $4.9M | 45.5K | 1.1% | ▲New New position | |
| 14 | Entergy Corp New COM | $4.6M | 40.0K | 1.1% | —Held | |
| 15 | Vanguard Scottsdale FDS SHRT TRM CORP BD | $4.2M | 53.3K | 1.0% | ▲+1.9% Added · +996 sh | |
| 16 | Lincoln Elec Hldgs Inc COM | $4.2M | 15.7K | 1.0% | ▲+162% Added · +10K sh | |
| 17 | Williams Cos Inc COM | $4.1M | 55.0K | 1.0% | ▲+22% Added · +10K sh | |
| 18 | Corning Inc COM | $3.6M | 14.0K | 0.8% | ▲New New position | |
| 19 | Shift4 PMTS Inc 6 SER A CNV PREF | $3.4M | 55.0K | 0.8% | ▲New New position | |
| 20 | Mastec Inc COM | $3.3M | 8.0K | 0.8% | ▲+33% Added · +2K sh | |
| 21 | Grupo Aeromexico SAB De CV SPONSORED ADS | $3.0M | 169.3K | 0.7% | —Held | |
| 22 | Ferguson Enterprises Inc COMMON STOCK NEW | $2.8M | 12.0K | 0.7% | ▲New New position | |
| 23 | Ishares Inc MSCI BRAZIL ETF | $2.8M | 80.0K | 0.6% | ▲New New position | |
| 24 | Redwood Trust Inc COM | $2.6M | 550.4K | 0.6% | —Held | |
| 25 | Shift4 PMTS Inc CL A | $2.4M | 50.0K | 0.6% | ▼−66% Reduced · −95K sh | |
| 26 | Ishares TR 3 7 YR TREAS BD | $2.4M | 20.6K | 0.6% | ▲+169% Added · +13K sh | |
| 27 | Ishares TR 7-10 YR TRSY BD | $2.1M | 22.6K | 0.5% | ▲New New position | |
| 28 | Pennymac Corp NOTE 8.500% 6/0 | $2.0M | 2.00M | 0.5% | ▲+100% Added · +1.0M sh | |
| 29 | Mfa Finl Inc COM | $2.0M | 210.0K | 0.5% | —Held | |
| 30 | Pennymac MTG Invt TR COM | $2.0M | 180.0K | 0.5% | —Held | |
| 31 | Ishares TR IBOXX HI YD ETF | $2.0M | 24.6K | 0.5% | ▲New New position | |
| 32 | Redwood Trust Inc NOTE 7.750% 6/1 | $1.8M | 1.80M | 0.4% | —Held | |
| 33 | Toll Brothers Inc COM | $1.6M | 10.0K | 0.4% | ▲New New position | |
| 34 | Redfin Corp NOTE 0.500% 4/0 | $1.6M | 1.65M | 0.4% | —Held | |
| 35 | Brighthouse Finl Inc COM | $1.6M | 25.0K | 0.4% | ▲New New position | |
| 36 | Ishares TR 20 YR TR BD ETF | $1.6M | 18.1K | 0.4% | ▲New New position | |
| 37 | Comfort Sys USA Inc COM | $1.5M | 750 | 0.3% | ▲New New position | |
| 38 | Iren Limited ORDINARY SHARES | $1.4M | 30.0K | 0.3% | ▲New New position | |
| 39 | Lumen Technologies Inc COM | $1.3M | 175.0K | 0.3% | ▲+133% Added · +100K sh | |
| 40 | Dynex Cap Inc COM | $1.2M | 95.0K | 0.3% | —Held | |
| 41 | Ge Vernova Inc COM | $1.2M | 1.0K | 0.3% | ▲New New position | |
| 42 | Ishares TR EXPANDED TECH | $1.1M | 12.5K | 0.3% | —Held | |
| 43 | Range Res Corp COM | $1.1M | 30.0K | 0.3% | —Held | |
| 44 | Eqt Corp COM | $1.1M | 20.0K | 0.2% | —Held | |
| 45 | Sabre Corp COM | $836K | 400.0K | 0.2% | ▲New New position | |
| 46 | Walmart Inc COM | $823K | 7.3K | 0.2% | —Held | |
| 47 | Wix Com Ltd SHS | $778K | 17.1K | 0.2% | ▲+90% Added · +8K sh | |
| 48 | Karman Hldgs Inc COMMON STOCK | $749K | 15.0K | 0.2% | ▲+200% Added · +10K sh | |
| 49 | Qnity Electronics Inc COMMON STOCK | $653K | 4.0K | 0.2% | ▲New New position | |
| 50 | Core Scientific Inc New COM | $640K | 25.0K | 0.2% | ▲+25% Added · +5K sh |
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/1096978/holdings"
Use Arkolith to show MARINER INVESTMENT GROUP LLC's latest holdings, largest changes, and filing provenance.
Put / call positions from the 13F — totals include every disclosed option leg
| Type | Underlying | Notional value | Underlying shares |
|---|---|---|---|
| CALL · bullish | INVESCO QQQ TRUST SERIES 1QQQ | $19.5M | 1.4M |
| CALL · bullish | COHERENT CORPCOHR | $2.4M | 37K |
| CALL · bullish | CIENA CORPCIEN | $2.1M | 36K |
| CALL · bullish | QNITY ELECTRONICS INCQ | $1.6M | 100K |
| CALL · bullish | ENTEGRIS INCENTG | $1.1M | 50K |
| PUT · bearish | LYONDELLBASELL INDUSTRIES NV | $1.0M | 200K |
| CALL · bullish | GE VERNOVA INCGEV | $846K | 10K |
| CALL · bullish | CATERPILLAR INCCAT | $790K | 16K |
| CALL · bullish | SHIFT4 PAYMENTS INC-CLASS AFOUR | $668K | 150K |
| PUT · bearish | OLIN CORPOLN | $665K | 254K |
| PUT · bearish | DOW INCDOW | $621K | 269K |
| CALL · bullish | QUANTA SERVICES INCPWR | $608K | 30K |
| CALL · bullish | SOLSTICE ADV MATERIALS INCSOLS | $503K | 94K |
| PUT · bearish | ISHR IBX USD HIYLD CB ETF-UIHYG | $492K | 1.9M |
| PUT · bearish | INVESCO SENIOR LOAN ETFBKLN | $421K | 1.4M |
| CALL · bullish | NOKIA CORP-SPON ADRNOK | $365K | 500K |
| PUT · bearish | APOLLO GLOBAL MANAGEMENT INCAPO | $286K | 40K |
| PUT · bearish | SS SPDR S&P 500 ETF TRUST-USSPY | $276K | 170K |
| PUT · bearish | POST HOLDINGS INCPOST | $266K | 75K |
| PUT · bearish | FS KKR CAPITAL CORPFSK | $258K | 700K |
| CALL · bullish | HOWMET AEROSPACE INCHWM | $236K | 70K |
| PUT · bearish | ARES MANAGEMENT CORP - AARES | $222K | 40K |
| CALL · bullish | STMICROELECTRONICS NV-NY SHSSTM | $161K | 29K |
| PUT · bearish | INVESCO QQQ TRUST SERIES 1QQQ | $152K | 27K |
| PUT · bearish | LENNAR CORP-ALEN | $152K | 124K |
13F filers disclose option positions at the market value of the underlying the contracts reference, not the premium paid. A put is a bearish bet (it gains if the stock falls); a call is bullish. “Underlying shares” is the share count the contracts control, not a share holding. These legs are excluded from the non-option book, weighting, concentration and sector figures above. Showing the largest 25 of 49 option legs.
As-of date vs the date the SEC received each filing
Reported 13F total per quarter. Raw filing totals can include option notional.
| Quarter | As of | Filed | Lag | Positions | Value | Form |
|---|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Jul 27, 2026 | 27d | 124 | $463.1M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | May 5, 2026 | 35d | 108 | $345.9M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 25, 2026 | 56d | 111 | $1.7B | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 14, 2025 | 45d | 76 | $330.6M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Jul 16, 2025 | 16d | 66 | $281.7M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 5, 2025 | 35d | 36 | $254.2M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Jan 22, 2025 | 22d | 46 | $504.6M | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Oct 29, 2024 | 29d | 31 | $371.3M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. Book totals and portfolio weights cover reported non-option positions, which can include notes and warrants. Disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.