Monashee Investment Management LLC
Monashee Investment Management LLC is an SEC-registered investment adviser based in Boston, Massachusetts. Founded in 2011, the firm provides investment management services across a range of strategies for institutional clients, family offices, and high-net-worth individuals. The firm manages more than $1.9 billion in assets and employs around 15 professionals, focusing on generating value through fundamental research and diversified portfolio construction.
Investment Strategy
Monashee Investment Management LLC employs a diversified investment strategy utilizing fundamental research to identify and invest in equity and equity-related securities across global markets. The firm builds concentrated portfolios with a focus on risk management, liquidity, and capital preservation, aiming to generate sustainable long-term returns for institutional and high-net-worth clients through a combination of long and short positions.
Latest 13F Filing Activity
Monashee Investment Management LLC filed their most recent 13F report on Jun 30, 2025 disclosing 36 equity positions and 17 options positions with a total 13F market value of $276M. The fund increased holdings in Eli Lilly & Co., Core Scientific Inc. New, Kratos Defense & Sec Solutio among other positions. Monashee Investment Management LLC reduced exposure to Ishares TR, Vanguard Index FDS, Vanguard Tax-managed FDS among others.
Top Holdings
Equity Positions (36)
| Ticker | Security | Weight | Market Value | Shares | Avg Cost | Price | Change (QoQ) |
|---|---|---|---|---|---|---|---|
L LLY | ELI LILLY & CO | 5.65% | $15.6M | 20,000 | $779.53 | $779.53 | +$15.6M |
C CORZ | CORE SCIENTIFIC INC NEW | 4.33% | $11.9M | 700,000 | $17.07 | $17.07 | +$11.9M |
K KTOS | KRATOS DEFENSE & SEC SOLUTIO | 4.21% | $11.6M | 250,000 | $46.45 | $46.45 | +$11.6M |
B BBIO | BRIDGEBIO PHARMA INC | 3.99% | $11.0M | 255,000 | $37.27 | $43.18 | +$5.0M |
S SLDB | SOLID BIOSCIENCES INC | 3.82% | $10.5M | 2,165,000 | $5.82 | $4.87 | +$4.4M |
Options Positions (10)
| Ticker | Security | Action | Type | Notional Value | Contracts | Underlying Price | Premium Paid | Change (Contracts) | Change (Value) |
|---|---|---|---|---|---|---|---|---|---|
Q QXO | QXO INC | New | Put | $17.2M | 8,000 | $21.54 | $21.54 | +8,000 | +$17.2M |
B BRO | BROWN & BROWN INC | New | Put | $16.6M | 1,500 | $110.87 | $110.87 | +1,500 | +$16.6M |
T TTAN | SERVICETITAN INC | New | Put | $10.2M | 950 | $107.18 | $107.18 | +950 | +$10.2M |
H HNGE | HINGE HEALTH INC | New | Put | $7.2M | 1,400 | $51.75 | $51.75 | +1,400 | +$7.2M |
C CIFR | CIPHER MINING INC | New | Put | $5.3M | 11,000 | $4.78 | $4.78 | +11,000 | +$5.3M |