MI
Monashee Investment Management LLC 13F Filings & Institutional Holdings (Q2 2026)
Monashee Investment Management LLCCIK: 0001627608
High-turnover traderSector-focusedContrarian
Total reported value
$59.6M
Reporting period: 2026-06-30 · Number of holdings: 23
Monashee Investment Management LLC disclosed 23 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $59.6M and a quarterly turnover rate of 185.4%.
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Personality snowflake
- Concentration
- 22.13
- Portfolio Stability
- 100
- Momentum
- 0
- Sector conviction
- 100
- Diversification
- 46
- Sizing Uniformity
- 94.66
Monashee Investment Management LLC's disclosed holdings carry a Herfindahl concentration index of 0.055 — mathematically equivalent to about 18 equally-sized positions, close to its 23 actual disclosed holdings. Value is spread relatively evenly across the portfolio rather than concentrated in a handful of names.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.53), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
Recent activity leans toward initiating meaningfully larger new positions than it adds to existing ones (a 4.1 percentage-point tilt) — a pattern consistent with a more contrarian, new-idea-driven approach.
Sector classification currently covers about 21% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govSold out 430
New buy 02079K404
New buy 02079K602
Sold out NEE 7.375 02-15-29
New buy DLR
New buy SYRE
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | ✓ | Stock-Other | 8.54% | +8.54% | NEW | ||
| 2 | ✓ | Stock-Other | 8.44% | +8.44% | NEW | ||
| 3 | SLDB | Solid Biosciences Inc | Stock-Other | 8.38% | +2.82% | -64.80% | |
| 4 | DLR | Digital Realty Trust Inc | Stock-Real Estate | 7.53% | +7.53% | NEW | |
| 5 | SYRE | Spyre Therapeutics Inc | Stock-Other | 7.45% | +7.45% | NEW | |
| 6 | ADT | Adt Inc | Stock-Industrials | 6.55% | +4.05% | -14.29% | |
| 7 | TNGX | Tango Therapeutics Inc | Stock-Other | 5.25% | +5.25% | NEW | |
| 8 | ✓ | Stock-Other | 4.76% | +4.76% | NEW | ||
| 9 | ✓ | Stock-Other | 4.36% | +4.36% | NEW | ||
| 10 | LEGN | Legend Biotech Corp-adr | Stock-Other | 4.14% | +4.14% | NEW | |
| 11 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 3.60% | +3.60% | NEW | |
| 12 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 3.56% | +3.56% | NEW | |
| 13 | QURE | uniQure N.V. | Stock-Other | 3.48% | +3.48% | NEW | |
| 14 | ✓ | Stock-Other | 3.16% | +3.16% | NEW | ||
| 15 | AKR | Acadia Realty Trust | Stock-Other | 3.00% | +3.00% | NEW | |
| 16 | PTRN | Pattern Group Inc-cl A | Stock-Other | 2.71% | +2.71% | NEW | |
| 17 | ✓ | Stock-Other | 2.58% | +2.58% | NEW | ||
| 18 | MLTX | Moonlake Immunotherapeutics | Stock-Other | 2.45% | +2.45% | NEW | |
| 19 | ✓ | Stock-Other | 2.39% | +2.39% | NEW | ||
| 20 | TSHA | Taysha Gene Therapies Inc | Stock-Other | 2.29% | +2.29% | NEW | |
| 21 | IMA | Imagenebio Inc | Stock-Other | 1.90% | +1.90% | NEW | |
| 22 | ✓ | Stock-Other | 1.77% | +1.77% | NEW | ||
| 23 | ✓ | Stock-Other | 1.71% | +1.71% | NEW |
Portfolio Performance
Performance for Q3 2026
-6.3%
Performance Last 4 Quarters
+0.9%
Based on 68% of reported portfolio value with available pricing
- Stdev
- +18.4%
- Beta
- +0.66
- Alpha
- +4.4%
- Max Drawdown
- -19.1%
- Annualized Perf
- +17.3%
- Batting Avg vs S&P
- +55.6%
- Sortino
- +1.45
- Stutzer
- +0.27
- Treynor
- +0.27
- Sterling
- +0.88
- Calmar
- +0.9
- Information Ratio
- -0.14
- Tracking Error
- +16.8%
- Stdev Down
- +12.2%
- Winning Months %
- +75%
- Losing Months %
- +25%
- Best 12 Months
- +38.2%
- Worst 12 Months
- +0.9%
- Efficiency Ratio
- +0.4
- Sharpe
- +0.96
- Stdev Sectors
- +1.9%
- Skewness
- -0.95
- Kurtosis
- +1.88
- Upside Potential
- +2.83
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q2 | 23 | $59.6M | 100 | ||
| 2026 Q1 | 45 | $183.8M | 100 | ||
| 2025 Q4 | 40 | $177.5M | 100 | ||
| 2025 Q3 | 61 | $200.5M | 100 | ||
| 2025 Q2 | 57 | $275.9M | 0 | ||
| 2025 Q1 | 46 | $845.1M | 100 | ||
| 2024 Q4 | 38 | $729.2M | 0 | ||
| 2024 Q3 | 110 | $923.5M | 0 | ||
| 2024 Q2 | 75 | $773.4M | 0 | ||
| 2024 Q1 | 105 | $845.3M | 0 | ||
| 2023 Q4 | 44 | $566.5M | 0 | ||
| 2023 Q3 | 75 | $239.4M | 0 | ||
| 2023 Q2 | 68 | $418.9M | 0 | ||
| 2023 Q1 | 55 | $362.2M | 0 | ||
| 2022 Q4 | 41 | $232.3M | 0 | ||
| 2022 Q3 | 52 | $269.6M | 0 | ||
| 2022 Q2 | 28 | $274.7M | 0 | ||
| 2022 Q1 | 38 | $345.3M | 0 | ||
| 2021 Q4 | 44 | $404.6M | 0 | ||
| 2021 Q3 | 262 | $541.5M | 0 | ||
| 2021 Q2 | 427 | $836.0M | 100 | ||
| 2021 Q1 | 374 | $650.2M | 100 | ||
| 2020 Q4 | 280 | $757.4M | 100 | ||
| 2020 Q3 | 173 | $464.4M | 100 | ||
| 2020 Q2 | 198 | $668.9M | 100 | ||
| 2020 Q1 | 61 | $186.6M | 100 | ||
| 2019 Q4 | 81 | $107.4M | 100 | ||
| 2019 Q3 | 112 | $219.4M | 100 | ||
| 2019 Q2 | 159 | $386.2M | 100 | ||
| 2019 Q1 | 127 | $434.7M | 100 | ||
| 2018 Q4 | 85 | $147.7M | 100 | 1G6375R231811A3G3165V | |
| 2018 Q3 | 150 | $472.2K | 100 | ||
| 2018 Q2 | 153 | $525.3K | 100 | ||
| 2018 Q1 | 143 | $362.2M | 100 | ||
| 2017 Q4 | 134 | $235.9K | 100 | ||
| 2017 Q3 | 81 | $264.3K | 100 | ||
| 2017 Q2 | 84 | $236.6M | 100 | ||
| 2017 Q1 | 82 | $249.0K | 100 | ||
| 2016 Q4 | 84 | $205.4M | 100 | ||
| 2016 Q3 | 86 | $284.3K | 100 | ||
| 2016 Q2 | 57 | $63.5K | 100 | ||
| 2016 Q1 | 38 | $54.7K | 100 | ||
| 2015 Q4 | 25 | $50.2M | 100 | ||
| 2015 Q3 | 10 | $14.5M | 100 | ||
| 2015 Q2 | 68 | $212.0K | 100 | ||
| 2015 Q1 | 67 | $160.6M | — |
Holding changes this quarter
Monashee Investment Management LLC's most significant position changes for 2026-06-30: Sold out: Terns Pharmaceuticals Inc (430); Sold out: Nextera Energy Inc (NEE 7.375 02-15-29); Sold out: Medline Inc-cl A (MDLN); Sold out: Nrg Energy Inc (NRG); Sold out: Forgent Power Solutions Inc (FPS).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ✓ | +8.5% | NEW | New buy | |
| 2 | ✓ | +8.4% | NEW | New buy | |
| 3 | DLR | Digital Realty Trust Inc | +7.5% | NEW | New buy |
| 4 | SYRE | Spyre Therapeutics Inc | +7.5% | NEW | New buy |
| 5 | TNGX | Tango Therapeutics Inc | +5.3% | NEW | New buy |
| 6 | ✓ | +4.8% | NEW | New buy | |
| 7 | ✓ | +4.4% | NEW | New buy | |
| 8 | LEGN | Legend Biotech Corp-adr | +4.1% | NEW | New buy |
| 9 | ADT | Adt Inc | +4.1% | -14.29% | Trim |
| 10 | GOOGL | Alphabet Inc-cl A | +3.6% | NEW | New buy |
| 11 | GOOG | Alphabet Inc-cl C | +3.6% | NEW | New buy |
| 12 | QURE | uniQure N.V. | +3.5% | NEW | New buy |
| 13 | ✓ | +3.2% | NEW | New buy | |
| 14 | AKR | Acadia Realty Trust | +3% | NEW | New buy |
| 15 | SLDB | Solid Biosciences Inc | +2.8% | -64.80% | Trim |
| 16 | PTRN | Pattern Group Inc-cl A | +2.7% | NEW | New buy |
| 17 | ✓ | +2.6% | NEW | New buy | |
| 18 | MLTX | Moonlake Immunotherapeutics | +2.5% | NEW | New buy |
| 19 | ✓ | +2.4% | NEW | New buy | |
| 20 | TSHA | Taysha Gene Therapies Inc | +2.3% | NEW | New buy |
| 21 | IMA | Imagenebio Inc | +1.9% | NEW | New buy |
| 22 | ✓ | +1.8% | NEW | New buy | |
| 23 | ✓ | +1.7% | NEW | New buy | |
| 24 | MSLE | Satellos Bioscience Inc | 0% | EXIT | Sold out |
| 25 | NRGV | Energy Vault Holdings Inc | -0.3% | EXIT | Sold out |
| 26 | GOSS 5 06-01-27Bond | Gossamer Bio Inc | -0.5% | EXIT | Sold out |
| 27 | VIR | Vir Biotechnology Inc | -0.5% | EXIT | Sold out |
| 28 | ✓ | Whitefiber Inc Shs | -0.5% | EXIT | Sold out |
| 29 | JAN | Janus Living Inc Cl-a-1 | -0.6% | EXIT | Sold out |
| 30 | COHR | Coherent CORP | -0.7% | EXIT | Sold out |
| 31 | BTGO | Bitgo Holdings Inc-cl A | -0.7% | EXIT | Sold out |
| 32 | CMPX | Compass Therapeutics Inc | -0.7% | EXIT | Sold out |
| 33 | ✓ | Helix Acquisition CORP Iii | -0.8% | EXIT | Sold out |
| 34 | NVGS | Navigator Holdings Ltd. | -0.8% | EXIT | Sold out |
| 35 | HNRG | Hallador Energy Co | -0.8% | EXIT | Sold out |
| 36 | ACRS | Aclaris Therapeutics Inc | -1% | EXIT | Sold out |
| 37 | SABS | Sab Biotherapeutics Inc | -1% | EXIT | Sold out |
| 38 | FLOC | Flowco Holdings Inc-cl A | -1.1% | EXIT | Sold out |
| 39 | ✓ | Engene Holdings Inc | -1.2% | EXIT | Sold out |
| 40 | GFS | GLOBALFOUNDRIES Inc. | -1.2% | EXIT | Sold out |
| 41 | INGM | Ingram Micro Holding CORP | -1.3% | EXIT | Sold out |
| 42 | CRSP | CRISPR Therapeutics AG | -1.3% | EXIT | Sold out |
| 43 | GPCR | Structure Therapeutics Inc | -1.3% | EXIT | Sold out |
| 44 | SGP | Spyglass Pharma Inc | -1.3% | EXIT | Sold out |
| 45 | FIGR | Figure Technology Solut-cl A | -1.4% | EXIT | Sold out |
| 46 | MMED | Minimed Group Inc | -1.4% | EXIT | Sold out |
| 47 | AMBQ | Ambiq Micro Inc | -1.4% | EXIT | Sold out |
| 48 | KYMR | Kymera Therapeutics Inc | -1.6% | EXIT | Sold out |
| 49 | ZBIO | Zenas Biopharma Inc | -1.6% | EXIT | Sold out |
| 50 | MANE | Veradermics Inc | -1.7% | EXIT | Sold out |
1–50 of 66
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Data Source Notice: AlphaSMO is the web's most authoritative 13F / Inside Trader database. Institutional holdings and insider trades presented here are precisely computed to deliver accurate portfolio reporting.
Filing History
FAQ
What is Monashee Investment Management LLC and what type of investor is it?
Monashee Investment Management LLC is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-06-30), the firm manages a tracked equity portfolio valued at approximately $59.6M, spread across 23 disclosed positions.
What are Monashee Investment Management LLC's largest equity positions?
Based on the latest 13F filing, Monashee Investment Management LLC's top holdings by market value are:
1. — $5.1M (8.5%)
2. — $5.0M (8.4%)
3. Solid Biosciences Inc (SLDB) — $5.0M (8.4%)
4. Digital Realty Trust Inc (DLR) — $4.5M (7.5%)
5. Spyre Therapeutics Inc (SYRE) — $4.4M (7.5%)
What changes did Monashee Investment Management LLC make in its most recent portfolio filing?
In the latest reported quarter, Monashee Investment Management LLC made 66 notable position adjustments: 21 new positions were initiated, 0 existing holdings were added to, 2 positions were partially reduced, and 43 were completely exited. The largest of these moves: Sold out: Terns Pharmaceuticals Inc (430); Sold out: Nextera Energy Inc (NEE 7.375 02-15-29); Sold out: Medline Inc-cl A (MDLN); Sold out: Nrg Energy Inc (NRG); Sold out: Forgent Power Solutions Inc (FPS)
What sectors does Monashee Investment Management LLC focus on?
Monashee Investment Management LLC is concentrated in the following sectors based on its current disclosed equity portfolio:
• Real Estate: 35.5%
• Communication Services: 33.7%
• Industrials: 30.8%
Investment Profile
Monashee Investment Management LLC returned an annualized 17.3% over the trailing 36 months — outperforming the S&P 500 by 4.4 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 0.66 (less volatile than the market) and a 56% quarterly batting average against the index.
Its portfolio is broadly diversified and fast-trading, with 35.5% of the portfolio concentrated in Real Estate.
Its turnover score has risen from 0 to 100 over the past 4 quarters — a shift toward more active trading.
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Developer Access
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