Institutional Manager · CIK 0001627608
Monashee Investment Management LLC
Boston, MA · File #028-16854
Latest AUM
$177.5M
Positions
40
Top-10 Concentration
54.4%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| NEW | MEDLINE INC | MDLN | +300,000 | +$12.6M | $0 |
| NEW | SOFI TECHNOLOGIES INC | SOFI | +400,000 | +$10.5M | $0 |
| EXITED | FORWARD INDS INC N Y | 349862409 | -405,406 | -$10.4M | $0 |
| NEW | UL SOLUTIONS INC | ULS | +130,000 | +$10.3M | $0 |
| NEW | INSMED INC | INSM | +50,000 | +$8.7M | $0 |
| NEW | TERNS PHARMACEUTICALS INC | TERN | +197,313 | +$8.0M | $0 |
| NEW | KYMERA THERAPEUTICS INC | KYMR | +100,000 | +$7.8M | $0 |
| REDUCE | BRIDGEBIO PHARMA INC | BBIO | -100,000 | -$7.6M | +$4.9M |
| NEW | SOLID BIOSCIENCES INC | SLDB | +1,349,771 | +$7.6M | $0 |
| EXITED | FIGURE TECHNOLOGY SOLUTIO | 349381103 | -200,000 | -$7.3M | $0 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 202540 pos · $177.5M
- 13F HOLDINGS REPORTQ/E Sep 202561 pos · $200.5M
- 13F HOLDINGS REPORTQ/E Jun 202557 pos · $275.9M
- 13F HOLDINGS REPORTQ/E Mar 202546 pos · $845.1M
- 13F HOLDINGS REPORTQ/E Dec 202438 pos · $729.2M
- 13F HOLDINGS REPORTQ/E Sep 2024110 pos · $923.5M
- 13F HOLDINGS REPORTQ/E Jun 202475 pos · $773.4M
- 13F HOLDINGS REPORTQ/E Mar 2024105 pos · $845.3M
- 13F HOLDINGS REPORTQ/E Dec 202375 pos · $239.4M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | STRUCTURE THERAPEUTICS INC | GPCR | 225,000 | $15.6M | 8.82% |
| 2 | MEDLINE INC | MDLN | 300,000 | $12.6M | 7.10% |
| 3 | SOFI TECHNOLOGIES INC | SOFI | 400,000 | $10.5M | 5.90% |
| 4 | UL SOLUTIONS INC | ULS | 130,000 | $10.3M | 5.78% |
| 5 | INSMED INC | INSM | 50,000 | $8.7M | 4.90% |
| 6 | TERNS PHARMACEUTICALS INC | TERN | 197,313 | $8.0M | 4.49% |
| 7 | KYMERA THERAPEUTICS INC | KYMR | 100,000 | $7.8M | 4.38% |
| 8 | MIAMI INTL HLDGS INC | 59356Q108 | 175,000 | $7.8M | 4.38% |
| 9 | BRIDGEBIO PHARMA INC | BBIO | 100,000 | $7.6M | 4.31% |
| 10 | SOLID BIOSCIENCES INC | SLDB | 1,349,771 | $7.6M | 4.29% |
| 11 | LEGENCE CORP | LGN | 137,940 | $5.9M | 3.35% |
| 12 | IMMUNOME INC | IMNM | 274,861 | $5.9M | 3.33% |
| 13 | ITT INC | ITT | 32,067 | $5.6M | 3.14% |
| 14 | COMPASS THERAPEUTICS INC | CMPX | 1,000,000 | $5.4M | 3.03% |
| 15 | CYTOKINETICS INC | CYTK | 75,000 | $4.8M | 2.69% |
| 16 | WEALTHFRONT CORP | WLTH | 300,000 | $4.1M | 2.30% |
| 17 | NEKTAR THERAPEUTICS | NKTR | 94,134 | $4.0M | 2.24% |
| 18 | SOUTHERN CO | SOMN | 75,877 | $3.8M | 2.15% |
| 19 | ADT INC DEL | ADT | 400,000 | $3.2M | 1.82% |
| 20 | EVOMMUNE INC | EVMN | 183,239 | $3.1M | 1.77% |