Monashee Investment Management LLC — 13F Holdings & Portfolio
CIK 1627608 · latest 13F-HR filed 2026-08-13
Monashee Investment Management LLC manages $59.6M in 13F-reported U.S. long-equity assets across 23 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are GOOGM (8.54%), GOOGN (8.44%), SLDB (8.38%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 21 new positions, exited 43, added to 0, and trimmed 2.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
4TH FLOOR
BOSTON, MA 02116
$59.6M
Long-equity book
23
Distinct positions
2026-06-30
Filed 2026-08-13
+21 / −43 / ↑0 / ↓2
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
New Positions
- ALPHABET INC$5.1M
- ALPHABET INC$5.0M
- DIGITAL RLTY TR INC$4.5M
- SPYRE THERAPEUTICS INC$4.4M
- TANGO THERAPEUTICS INC$3.1M
Exited Positions
- TERNS PHARMACEUTICALS INC$15.8M
- NEXTERA ENERGY INC$15.2M
- MEDLINE INC$13.3M
- NRG ENERGY INC$12.4M
- FORGENT POWER SOLUTIONS INC$10.2M
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | ALPHABET INC | GOOGM | 02079K404 | $5.1M | 8.54% | 100,000 | SH |
| 2 | ALPHABET INC | GOOGN | 02079K602 | $5.0M | 8.44% | 100,000 | SH |
| 3 | SOLID BIOSCIENCES INC | SLDB | 83422E204 | $5.0M | 8.38% | 500,000 | SH |
| 4 | DIGITAL RLTY TR INC | DLR | 253868103 | $4.5M | 7.53% | 25,000 | SH |
| 5 | SPYRE THERAPEUTICS INC | SYRE | 00773J202 | $4.4M | 7.45% | 50,000 | SH |
| 6 | ADT INC DEL | ADT | 00090Q103 | $3.9M | 6.55% | 600,000 | SH |
| 7 | TANGO THERAPEUTICS INC | TNGX | 87583X109 | $3.1M | 5.25% | 100,000 | SH |
| 8 | CELCUITY INC | CELC | 15102KAB6 | $2.8M | 4.76% | 2,500,000 | PRN |
| 9 | SUPER MICRO COMPUTER INC | SMCIP | 86800U500 | $2.6M | 4.36% | 50,000 | SH |
| 10 | LEGEND BIOTECH CORP | LEGN | 52490G102 | $2.5M | 4.14% | 85,385 | SH |
| 11 | ALPHABET INC | GOOGL | 02079K305 | $2.1M | 3.60% | 6,000 | SH |
| 12 | ALPHABET INC | GOOG | 02079K107 | $2.1M | 3.56% | 6,000 | SH |
| 13 | UNIQURE NV | QURE | N90064101 | $2.1M | 3.48% | 45,000 | SH |
| 14 | INNIO NV | INIO | N52A8C105 | $1.9M | 3.16% | 47,650 | SH |
| 15 | ACADIA RLTY TR | AKR | 004239109 | $1.8M | 3.00% | 85,385 | SH |
| 16 | PATTERN GROUP INC | PTRN | 70339W104 | $1.6M | 2.71% | 64,039 | SH |
| 17 | PURECYCLE TECHNOLOGIES INC | PCTTW | 74623VAD5 | $1.5M | 2.58% | 1,500,000 | PRN |
| 18 | MOONLAKE IMMUNOTHERAPEUTICS | MLTX | 61559X104 | $1.5M | 2.45% | 75,000 | SH |
| 19 | WHITEHAWK MINERALS CORP | WHK | 96524T101 | $1.4M | 2.39% | 51,232 | SH |
| 20 | TAYSHA GENE THERAPIES INC | TSHA | 877619106 | $1.4M | 2.29% | 200,000 | SH |
| 21 | IMAGENEBIO INC | IMA | 45175G207 | $1.1M | 1.90% | 192,344 | SH |
| 22 | NUVATION BIO INC | NUVB | 67080NAA9 | $1.1M | 1.77% | 1,000,000 | PRN |
| 23 | KARDIGAN INC | KARD | 485925101 | $1.0M | 1.71% | 42,693 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-13 | $59.6M | 23 | 0001172661-26-003357 |
| 2026-03-31 | 2026-05-13 | $183.8M | 45 | 0001172661-26-001803 |
| 2025-12-31 | 2026-02-12 | $177.5M | 40 | 0001172661-26-000650 |
| 2025-09-30 | 2025-11-12 | $200.5M | 61 | 0001172661-25-004710 |