Monashee Investment Management LLC
In its 13F for Q4 2024 (holdings as of December 31, 2024, filed February 14, 2025), Monashee Investment Management LLC reported 34 stock positions worth $719.5 million. Its top holding was iShares Core S&P 500 ETF (IVV) at 23.0% of the portfolio, followed by Vanguard S&P 500 ETF (VOO, 22.9%) and Vanguard Ftse Developed ETF (VEA, 11.5%). Compared with Q3 2024, it opened 16 new positions, sold out of 85, added to 7 and reduced 8. The biggest buy was iShares Core S&P 500 ETF (IVV, shares +5%) and the biggest sale an exit from Casella Waste Systems Class A (CWST).
- Most Recent 13F
- Q2 2026
- Location
- Boston, MA
- CIK
- 0001627608
- Portfolio Value
- $719.5M (Q4 2024)
- SEC Filing
- 0001172661-25-001283 ↗ filed Feb 14, 2025
Holdings Value
Holdings 34 stocks · $719.5M
| IVV iShares Core S&P 500 ETF | 22.96% | 280,510 | $165.2M | Add +4.8% |
| VOO Vanguard S&P 500 ETF | 22.90% | 305,810 | $164.8M | Add +4.9% |
| VEA Vanguard Ftse Developed ETF | 11.54% | 1,736,600 | $83.0M | Add +2.3% |
| IEFA iShares Core MSCI Eafe ETF | 8.64% | 884,080 | $62.2M | Add +1.6% |
| VWO Vanguard Ftse Emerging Marke | 6.60% | 1,077,560 | $47.5M | Add +1.0% |
| IEMG iShares Core MSCI Emerging | 5.60% | 772,100 | $40.3M | Add +1.1% |
| ITOT iShares Core S&P Total U.S. | 3.78% | 211,260 | $27.2M | No change |
| VTI VG Morningstar TS MKT ETF-US | 3.77% | 93,660 | $27.1M | No change |
| AJG Arthur J Gallagher & Co. filed as GALLAGHER ARTHUR J & CO | 2.76% | 70,000 | $19.9M | New |
| LB Landbridge Co. LLC-A | 1.12% | 124,937 | $8.1M | New |
| SOC Sable Offshore Corp. | 1.10% | 345,000 | $7.9M | Reduce -1.4% |
| BA The Boeing Co. | 0.98% | 40,000 | $7.1M | New |
| AS Amer Sports Inc. | 0.89% | 230,000 | $6.4M | New |
| ABX Abacus Global Management Inc. | 0.88% | 810,000 | $6.3M | New |
| BDSX Biodesix Inc. | 0.74% | 3,500,879 | $5.4M | No change |
| ACHR Archer Aviation Inc. Class A | 0.60% | 446,240 | $4.4M | Reduce -25.6% |
| LUNR Intuitive Machines Inc. | 0.59% | 235,000 | $4.3M | New |
| LMAT Lemaitre Vascular Inc. | 0.51% | 40,000 | $3.7M | New |
| GPCR Structure Therapeutics Inc. | 0.50% | 132,000 | $3.6M | Reduce -17.3% |
| AER Aercap Holdings NV | 0.40% | 30,000 | $2.9M | Reduce -75.0% |
| NBIS Nebius Group NV | 0.39% | 100,000 | $2.8M | New |
| CRGY Crescent Energy Inc. Class A | 0.32% | 160,000 | $2.3M | Add +23.1% |
| COMP Compass Inc. Class A | 0.31% | 379,900 | $2.2M | New |
| ACRS Aclaris Therapeutics Inc. | 0.31% | 888,888 | $2.2M | New |
| EVGO Evgo Inc. | 0.28% | 490,000 | $2.0M | New |
| SRRK Scholar Rock Holding Corp. | 0.27% | 45,000 | $1.9M | New |
| KGS Kodiak Gas Services Inc. | 0.27% | 47,189 | $1.9M | Reduce -58.1% |
| SLDB Solid Biosciences Inc. | 0.27% | 480,000 | $1.9M | Reduce -1.0% |
| NAMS Newamsterdam Pharma Co. NV | 0.18% | 50,000 | $1.3M | New |
| CGON CG Oncology Inc. | 0.15% | 36,872 | $1.1M | New |
| SEI Solaris Energy Infrastructur | 0.12% | 30,000 | $863K | New |
| TTAN Servicetitan Inc. Class A | 0.11% | 7,500 | $772K | New |
| CMPX Compass Therapeutics Inc. | 0.09% | 448,164 | $650K | Reduce -10.4% |
| MDXH Mdxhealth | 0.07% | 208,000 | $493K | Reduce -79.2% |
Other holdings (4): bonds, preferreds, convertibles and warrants · $9.7M (not counted above)
| Security | Class | Shares / Principal | Value | Change |
|---|---|---|---|---|
| BOEING CO/THE (BA 6 10/15/27) | DEP CONV PFD A | 50,000 | $3.0M | New |
| CONFLUENT INC (CFLT 0 01/15/27) | NOTE 1/1 · principal | 3,000,000 | $2.7M | New |
| PG&E CORP (PCG 6 12/01/27 A) | PFD CONV SER A | 51,275 | $2.6M | New |
| CLOUDFLARE INC (NET 0 08/15/26) | NOTE 8/1 · principal | 1,500,000 | $1.4M | New |
Total filed on the 13F, all lines: $729.2M.
Portfolio Sells Q3 2024 → Q4 2024
| CWST Casella Waste Systems Inc. Class A | Sold out | 0.00% | −1.49 |
| VIK Viking Holdings Ltd. | Sold out | 0.00% | −1.24 |
| AHR American Healthcare REIT Inc. | Sold out | 0.00% | −1.08 |
| LINE Lineage Inc. | Sold out | 0.00% | −1.04 |
| NEM Newmont Corp. | Sold out | 0.00% | −0.89 |
| AER Aercap Holdings NV | Reduce -75.0% | 0.40% | −0.86 |
| GEHC GE Healthcare Technology | Sold out | 0.00% | −0.73 |
| GEV GE Vernova Inc. | Sold out | 0.00% | −0.71 |
| ULS Ul Solutions Inc. Class A | Sold out | 0.00% | −0.65 |
| GTES Gates Industrial Corp. UK Ltd. | Sold out | 0.00% | −0.60 |
| PACS Pacs Group Inc. | Sold out | 0.00% | −0.60 |
| PLTR Palantir Technologies Inc. Class A | Sold out | 0.00% | −0.54 |
| PCVX Vaxcyte Inc. | Sold out | 0.00% | −0.51 |
| ARDT Ardent Health Inc. | Sold out | 0.00% | −0.50 |
| MSTR Strategy Inc. | Sold out | 0.00% | −0.49 |
| CDTX Cidara Therapeutics Inc. | Sold out | 0.00% | −0.44 |
| HESM Hess Midstream LP Class A | Sold out | 0.00% | −0.43 |
| CRBG Corebridge Financial Inc. | Sold out | 0.00% | −0.43 |
| HEI Heico Corp. | Sold out | 0.00% | −0.41 |
| PWP Perella Weinberg Partners | Sold out | 0.00% | −0.40 |
| NUVL Nuvalent Inc. Class A | Sold out | 0.00% | −0.40 |
| TCOM Trip.com Group Ltd.-ADR | Sold out | 0.00% | −0.39 |
| VSEC Vse Corp. | Sold out | 0.00% | −0.39 |
| ROIV Roivant Sciences Ltd. | Sold out | 0.00% | −0.39 |
| PKX Posco Holdings Inc. -Spon ADR | Sold out | 0.00% | −0.39 |
| WAY Waystar Holding Corp. | Sold out | 0.00% | −0.39 |
| TBBB BBB Foods Inc. Class A | Sold out | 0.00% | −0.37 |
| ALKT Alkami Technology Inc. | Sold out | 0.00% | −0.35 |
| CAVA Cava Group Inc. | Sold out | 0.00% | −0.34 |
| TPG TPG Inc. | Sold out | 0.00% | −0.34 |
| ZETA Zeta Global Holdings Corp. Class A | Sold out | 0.00% | −0.33 |
| LTM Latam Airlines Group SA-ADR | Sold out | 0.00% | −0.33 |
| HUMA Humacyte Inc. | Sold out | 0.00% | −0.32 |
| VNOM Viper Energy Inc. | Sold out | 0.00% | −0.30 |
| CNTA Centessa Pharmaceuticals Ltd. | Sold out | 0.00% | −0.29 |
| ZBIO Zenas Biopharma Inc. | Sold out | 0.00% | −0.28 |
| MLTX Moonlake Immunotherapeutics | Sold out | 0.00% | −0.28 |
| GRDN Guardian Phrmcy Services-A | Sold out | 0.00% | −0.28 |
| GPCR Structure Therapeutics Inc. | Reduce -17.3% | 0.50% | −0.28 |
| FUN Six Flags Entertainment Corp. | Sold out | 0.00% | −0.27 |
| HLI Houlihan Lokey Inc. | Sold out | 0.00% | −0.26 |
| AUR Aurora Innovation Inc. | Sold out | 0.00% | −0.26 |
| RLAY Relay Therapeutics Inc. | Sold out | 0.00% | −0.25 |
| CON Concentra Group Holdings Par | Sold out | 0.00% | −0.25 |
| IBTA Ibotta Inc. Class A | Sold out | 0.00% | −0.24 |
| WVE Wave Life Sciences Ltd. | Sold out | 0.00% | −0.24 |
| LTH Life Time Group Holdings Inc. | Sold out | 0.00% | −0.23 |
| MC Moelis & Co. Class A | Sold out | 0.00% | −0.23 |
| RITM Rithm Capital Corp. | Sold out | 0.00% | −0.23 |
| RNAM Avidity Biosciences Inc. | Sold out | 0.00% | −0.22 |
Portfolio Buys Q3 2024 → Q4 2024
| IVV iShares Core S&P 500 ETF | Add +4.8% | 22.96% | +5.87 |
| VOO Vanguard S&P 500 ETF | Add +4.9% | 22.90% | +5.87 |
| AJG Arthur J Gallagher & Co. | New | 2.76% | +2.76 |
| VEA Vanguard Ftse Developed ETF | Add +2.3% | 11.54% | +1.62 |
| LB Landbridge Co. LLC-A | New | 1.12% | +1.12 |
| IEFA iShares Core MSCI Eafe ETF | Add +1.6% | 8.64% | +1.12 |
| BA The Boeing Co. | New | 0.98% | +0.98 |
| VWO Vanguard Ftse Emerging Marke | Add +1.0% | 6.60% | +0.95 |
| AS Amer Sports Inc. | New | 0.89% | +0.89 |
| ABX Abacus Global Management Inc. | New | 0.88% | +0.88 |
| IEMG iShares Core MSCI Emerging | Add +1.1% | 5.60% | +0.75 |
| LUNR Intuitive Machines Inc. | New | 0.59% | +0.59 |
| LMAT Lemaitre Vascular Inc. | New | 0.51% | +0.51 |
| NBIS Nebius Group NV | New | 0.39% | +0.39 |
| COMP Compass Inc. Class A | New | 0.31% | +0.31 |
| ACRS Aclaris Therapeutics Inc. | New | 0.31% | +0.31 |
| EVGO Evgo Inc. | New | 0.28% | +0.28 |
| SRRK Scholar Rock Holding Corp. | New | 0.27% | +0.27 |
| NAMS Newamsterdam Pharma Co. NV | New | 0.18% | +0.18 |
| CRGY Crescent Energy Inc. Class A | Add +23.1% | 0.32% | +0.17 |
| CGON CG Oncology Inc. | New | 0.15% | +0.15 |
| SEI Solaris Energy Infrastructur | New | 0.12% | +0.12 |
| TTAN Servicetitan Inc. Class A | New | 0.11% | +0.11 |
Notes & Other Activity Q3 2024 → Q4 2024
| HP ENTERPRISE CO (HPE 7.625 09/01/27) | 7.625 MAND CONV | Sold out | 125,000 | $7.6Mbefore exit |
| NEXTERA ENERGY INC (NEE 7.299 06/01/27) | UNIT 06/01/2027 | Sold out | 85,000 | $4.7Mbefore exit |
| BOEING CO/THE (BA 6 10/15/27) | DEP CONV PFD A | New | 50,000 | $3.0M |
| WAYFAIR INC (W 3.25 09/15/27) | NOTE 3.250% 9/1 · principal | Sold out | 2,500,000 | $3.0Mbefore exit |
| SPOTIFY USA INC (SPOT 0 03/15/26) | NOTE 3/1 · principal | Sold out | 3,000,000 | $3.0Mbefore exit |
| CONFLUENT INC (CFLT 0 01/15/27) | NOTE 1/1 · principal | New | 3,000,000 | $2.7M |
| PG&E CORP (PCG 6 12/01/27 A) | PFD CONV SER A | New | 51,275 | $2.6M |
| SOUTHWEST AIRLINES CO (LUV 1.25 05/01/25) | NOTE 1.250% 5/0 · principal | Sold out | 1,500,000 | $1.5Mbefore exit |
| CLOUDFLARE INC (NET 0 08/15/26) | NOTE 8/1 · principal | New | 1,500,000 | $1.4M |
| NAMSW Newamsterdam Pharma Co. NV-27 | *W EXP 99/99/999 | Sold out | 31,189 | $218Kbefore exit |
| SRZNW Surrozen Inc.-CW25 | *W EXP 08/01/203 | Sold out | 82,986 | $855before exit |
Bonds, preferreds, convertibles and warrants; not part of the stock holdings or percentages above.
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 17 | $41.4M | SLDB, DLR, SYRE, ADT, TNGX |
| Q1 2026 | 41 | $154.8M | TERN, MDLN, NRG, FPS, SLDB |
| Q4 2025 | 37 | $169.3M | GPCR, MDLN, SOFI, ULS, INSM |
| Q3 2025 | 58 | $194.0M | BBIO, FWDI, WYFI, FIGR, NTSK |
| Q2 2025 | 36 | $181.8M | LLY, CORZ, KTOS, BBIO, SLDB |
| Q1 2025 | 41 | $826.9M | IVV, VOO, VEA, IEFA, VWO |
| Q4 2024 | 34 | $719.5M | IVV, VOO, VEA, IEFA, VWO |
| Q3 2024 | 103 | $903.5M | IVV, VOO, VEA, IEFA, VWO |
| Q2 2024 | 72 | $766.6M | IVV, VOO, VEA, IEFA, VWO |
| Q1 2024 | 99 | $835.9M | IVV, VOO, VEA, IEFA, VWO |