Monashee Investment Management, Llc
- Regulatory AUM
- $1.9B
- Discretionary
- $1.9B
- Clients
- 5
- Avg AUM / client
- $371M
- Accounts
- 12
- Employees
- 13
AUM over time
Annual snapshots from Form ADV filings · as of Feb 27, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Pooled investment vehicles (non-investment companies) | 5 | $689M | 37.1% |
| Pension and profit sharing plans | Fewer than 5 clients | $647M | 34.9% |
| Charitable organizations | Fewer than 5 clients | $440M | 23.7% |
| Corporations and other businesses | Fewer than 5 clients | $80.0M | 4.31% |
People (3)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Wynn, Thomas, Joseph | Managing Partner | Dec 2011 (15y) | ≈ 14.06% – 50% via Fiske Road Limited Partnership | |
| Muller, Jeffry, Thomas | Chief Compliance Officer, Head Of Operations | May 2014 (12y) | Less than 5% | |
| Buckley, Daniel, James | Chief Financial Officer | Mar 2020 (6y) | Less than 5% |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Monashee Holdings Llc | Managing Member | Dec 2017 | A | 75% or more |
| Jefferies Financial Group Llc | Member | Dec 2021 | B | ≈ 14.06% – 50% via Leucadia Asset Management Holdings Llc |
| Fiske Road Limited Partnership | Member | Oct 2019 | B | ≈ 18.75% – 50% via Monashee Holdings Llc |
| Leucadia Asset Management Holdings Llc | Member | Dec 2021 | B | ≈ 18.75% – 50% via Monashee Holdings Llc |
| Monashee Llc | General Partner | Oct 2019 | B | GP / trustee / elected manager of Fiske Road Limited Partnership (indirect) |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Wynn, Thomas, Joseph: 75% – 100% of Fiske Road Limited Partnership × 25% – 50% of Monashee Holdings Llc × 75% – 100% direct ≈ 14.06% – 50% of the firm
- Jefferies Financial Group Llc: 75% – 100% of Leucadia Asset Management Holdings Llc × 25% – 50% of Monashee Holdings Llc × 75% – 100% direct ≈ 14.06% – 50% of the firm
- Fiske Road Limited Partnership: 25% – 50% of Monashee Holdings Llc × 75% – 100% direct ≈ 18.75% – 50% of the firm
- Leucadia Asset Management Holdings Llc: 25% – 50% of Monashee Holdings Llc × 75% – 100% direct ≈ 18.75% – 50% of the firm
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 02/27/2026 | 1.31 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
- • Performance-based fees
Services
- • Portfolio management for pooled investment vehicles
- • Portfolio management for businesses/institutional clients
Custody
Reported custodians
- Goldman Sachs $469M (25% of AUM) Feb 2026
- J.P. Morgan $305M (16% of AUM) Feb 2026
- Morgan Stanley $258M (14% of AUM) Feb 2026
Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).
Firm reports having custody of client funds or securities (Item 9.A).
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Feb 27, 2026.
View current Form ADV (SEC/IAPD) ↗