Mariner Investment Group LLC holds a focused book of 75 stocks worth $426.3M as of Q2 2026 (disclosed Jul 27, 2026, a ~45-day 13F lag). This quarter 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 equity 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 equity book. Cloning the disclosed picks since 2024 would be -15% (-9.0%/yr). That is a simulation of the disclosed long book, not audited returns.
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Use Arkolith to show MARINER INVESTMENT GROUP LLC's latest holdings, largest changes, and filing provenance.
The reported book (valued from quarter-end) returned -4.8%, a 10.3-point gap that is the cost of the ~45-day 13F disclosure lag a real follower can't avoid.
Growth of $10,000 cloning Mariner Investment Group LLC's disclosed long 13F book, rebalanced on each filing date (so it reflects the ~45-day reporting lag, no look-ahead), total-return basis (dividends reinvested), derived from end-of-day prices. “Their reported book” values the same picks from quarter-end, before they were public. S&P 500 is SPY total return over the same window. Excludes shorts, cash, options and non-13F holdings. Not investment advice.
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
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, no cost basis
Other tracked managers holding the same core names as Mariner Investment Group LLC
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| BlackRock, Inc. | 73 / 75 | $178.3B |
| WELLS FARGO & COMPANY/MN | 72 / 75 | $22.3B |
| MORGAN STANLEY | 71 / 75 | $77.8B |
| UBS Group AG | 70 / 75 | $26.8B |
| JPMORGAN CHASE & CO | 69 / 75 | $84.4B |
| ROYAL BANK OF CANADA | 69 / 75 | $17.9B |
| CITIGROUP INC | 69 / 75 | $8.7B |
| GOLDMAN SACHS GROUP INC | 68 / 75 | $46.0B |
Ranked by how many of Mariner Investment Group LLC's top 75 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.
Bars show each stock'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 |
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 equity 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
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Jul 27, 2026 | 124 | $463.1M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | May 5, 2026 | 108 | $345.9M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 25, 2026 | 111 | $1.7B | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 14, 2025 | 76 | $330.6M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Jul 16, 2025 | 66 | $281.7M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 5, 2025 | 36 | $254.2M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Jan 22, 2025 | 46 | $504.6M | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Oct 29, 2024 | 31 | $371.3M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.