Q2 2026 13F · SEC CIK 1627608
Monashee Investment Management LLC
Institutional asset managerFiled 2026-08-13 for Q2 2026. Open the filing ↗ · All SEC filings ↗
- Reported 13F value
- $54.2M
- Reported positions
- 20
- Top holdings a year, 3 yrs
- +22.4%
- Assets under management
- $1.9B
Monashee Investment Management LLC is an institutional asset manager that reported 20 positions worth $54.2M in its Q2 2026 13F, filed 2026-08-13. Its largest holdings were Alphabet Inc (GOOGM, 9.4%), Alphabet Inc (GOOGN, 9.3%), Solid Bioscience Inc. (SLDB, 9.2%). A portfolio copying its top holdings returned 22.4% a year over the last 3 years, against 20.4% for the S&P 500.
Monashee Investment Management LLC holdings all 20 positions.
Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.
| Stock | % of 13F value | Share change | Reported value |
|---|---|---|---|
| GOOGMAlphabet Inc | 9.4% | — | $5.1M |
| GOOGNAlphabet Inc | 9.3% | — | $5.0M |
| SLDBSolid Bioscience Inc. | 9.2% | -64.8% | $5.0M |
| DLRDigital Rlty Tr Inc | 8.3% | — | $4.5M |
| SYRESpyre Therapeutics | 8.2% | — | $4.4M |
| ADTAdt Inc Del | 7.2% | -14.3% | $3.9M |
| TNGXTango Therapeutics Inc | 5.8% | — | $3.1M |
| SMCIPSuper Micro Computer Inc | 4.8% | — | $2.6M |
| LEGNLegend Biotech Corp | 4.6% | — | $2.5M |
| GOOGLAlphabet Inc | 4.0% | — | $2.1M |
| GOOGAlphabet Inc | 3.9% | — | $2.1M |
| QUREUniqure NV | 3.8% | — | $2.1M |
| INIOInnio NV | 3.5% | — | $1.9M |
| AKRAcadia Rlty Tr | 3.3% | — | $1.8M |
| PTRNPattern Group Inc | 3.0% | — | $1.6M |
| MLTXMoonlake Immunotherapeutics | 2.7% | — | $1.5M |
| WHKWhitehawk Minerals Corp | 2.6% | — | $1.4M |
| TSHATaysha Gene Therapies Inc | 2.5% | — | $1.4M |
| IMAImagenebio Inc | 2.1% | — | $1.1M |
| KARDKardigan Inc | 1.9% | — | $1.0M |
What Monashee Investment Management LLC bought and sold in Q2 2026, against Q1 2026.
New positions
- GOOGM Alphabet Inc9.4% of 13F
- GOOGN Alphabet Inc9.3% of 13F
- DLR Digital Rlty Tr Inc8.3% of 13F
- SYRE Spyre Therapeutics8.2% of 13F
- TNGX Tango Therapeutics Inc5.8% of 13F
- SMCIP Super Micro Computer Inc4.8% of 13F
- LEGN Legend Biotech Corp4.6% of 13F
- GOOGL Alphabet Inc4.0% of 13F
Added to
No position grew by more than 5%.
Reduced
- SLDB Solid Bioscience Inc.-64.8% shares
- ADT Adt Inc Del-14.3% shares
Sold out
- TERN Terns Pharmaceuticals Incwas 8.6%
- NextEra Energy 7.375 15-Feb-2029 PEPSwas 8.3%
- MDLN Medline Incwas 7.3%
- NRG Nrg Energy Incwas 6.8%
- FPS Forgent Power Solutions Incwas 5.6%
- NKTR Nektar Therapeuticswas 3.9%
- CYTK Cytokineticswas 3.6%
- JOBY-WT Joby Aviation Incwas 3.2%
Share counts compared with the Q1 2026 13F; a split also changes share counts.
How the holdings did against the S&P 500.
- 1 year
- +14.6% /yr
- S&P 500 +20.1%
- 3 years
- +22.4% /yr
- S&P 500 +20.4%
- 5 years
- +6.2% /yr
- S&P 500 +11.6%
A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.
Reported 13F value by quarter.
| Quarter | 13F value | Positions |
|---|---|---|
| Q2 2026 | $54.2M | 20 |
| Q1 2026 | $183.8M | 45 |
| Q4 2025 | $176.2M | 39 |
| Q3 2025 | $197.8M | 59 |
| Q2 2025 | $186.4M | 38 |
| Q1 2025 | $843.6M | 45 |
| Q4 2024 | $725.1M | 36 |
| Q3 2024 | $916.0M | 107 |
| Q2 2024 | $771.7M | 74 |
| Q1 2024 | $839.2M | 101 |
| Q4 2023 | $566.5M | 44 |
| Q3 2023 | $239.4M | 75 |
Questions about Monashee Investment Management LLC's portfolio
What stocks does Monashee Investment Management LLC own?
Monashee Investment Management LLC's latest 13F, for Q2 2026 and filed Aug 13, 2026, lists 20 positions worth $54.2M. The largest are Alphabet Inc (GOOGM) at 9.4%, Alphabet Inc (GOOGN) at 9.3%, Solid Bioscience Inc. (SLDB) at 9.2%, Digital Rlty Tr Inc (DLR) at 8.3% and Spyre Therapeutics (SYRE) at 8.2%.
What did Monashee Investment Management LLC buy last quarter?
In Q2 2026, Monashee Investment Management LLC added a new position in Alphabet Inc (GOOGM), a new position in Alphabet Inc (GOOGN), a new position in Digital Rlty Tr Inc (DLR), a new position in Spyre Therapeutics (SYRE) and a new position in Tango Therapeutics Inc (TNGX), compared with its Q1 2026 filing.
What did Monashee Investment Management LLC sell last quarter?
In Q2 2026, Monashee Investment Management LLC sold all of Terns Pharmaceuticals Inc (TERN), sold all of NextEra Energy 7.375 15-Feb-2029 PEPS, sold all of Medline Inc (MDLN), sold all of Nrg Energy Inc (NRG), sold all of Forgent Power Solutions Inc (FPS), Solid Bioscience Inc. (SLDB) (-64.8% shares) and Adt Inc Del (ADT) (-14.3% shares), compared with its Q1 2026 filing.
How has Monashee Investment Management LLC's portfolio performed?
A portfolio copying Monashee Investment Management LLC's 20 largest 13F holdings each quarter, from the day each filing was public, returned +22.4% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +14.6% against +20.1%. Over 5 years: +6.2% a year against +11.6%.
When is Monashee Investment Management LLC's next 13F filing due?
13F filings are due 45 days after each quarter ends. Monashee Investment Management LLC's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.
How much money does Monashee Investment Management LLC manage?
Monashee Investment Management LLC reported $1.9B of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $54.2M.