Data / Investment advisers / Massachusetts / Monashee Investment Management, LLC
Monashee Investment Management, LLC, Boston, MA: $1.9 billion AUM, SEC registered investment adviser
Updated November 7, 2026. Source: the SEC's Form ADV data files for investment advisers.
Monashee Investment Management, LLC is an SEC registered investment adviser with its main office in Boston, Massachusetts and reports $1.9 billion in regulatory assets under management in its Form ADV filed February 27, 2026. Its clients include pooled investment vehicles, pension and profit sharing plans and charitable organizations. It is paid through a percentage of assets under management and performance based fees. It advises 1 private fund.
The request: Watch Monashee Investment Management, LLC (CRD number 163148): each new Form ADV amendment, with AUM, clients and private funds. $10 of work on sign-up, no card.
SpecStream is the live web data engine for teams and agents. It reads the SEC's Form ADV files every month, and this page is that reading, keyed on the CRD number. Ask for the advisers you track by state, city, size, client type or private funds, and new registrations and filings arrive in your sheet, CRM, Slack or agent as the SEC publishes them.
- Registration
- SEC registered investment adviser
- CRD number
- 163148
- SEC file number
- 801-79936
- SEC status
- Approved, effective June 20, 2014
- Main office
- 75 Park Plaza 4th Floor, Boston, MA 02116
- Phone
- (617) 671-0048
- Website
- monasheecap.com
- Regulatory AUM
- $1,856,181,965 in the Form ADV filed February 27, 2026
- Discretionary AUM
- $1,856,181,965
- Accounts
- 12
- Employees
- 13, of which 8 give investment advice
- Form of organization
- Limited Liability Company
- Paid through
- a percentage of assets under management, performance based fees
- Private funds
- 1: 1 hedge fund
- Gross assets of private funds
- $139,181,421
- Other offices
- 2
- Form ADV Item 11 disclosures
- None reported
- Latest Form ADV filing
- February 27, 2026
- SEC record
- Investment Adviser Public Disclosure
Clients
Client types the adviser reports in Form ADV item 5.D, with the AUM it attributes to each.
| Client type | Clients | AUM |
|---|---|---|
| Pooled investment vehicles | 5 | $689.2 million |
| Pension and profit sharing plans | Fewer than 5 | $647.2 million |
| Charitable organizations | Fewer than 5 | $439.8 million |
| Corporations or other businesses | Fewer than 5 | $80 million |
AUM in the SEC's monthly files
Each change in the AUM the adviser reported across the monthly SEC files held here, with the first file that shows the new value.
| First in the file of | AUM | Form ADV filed |
|---|---|---|
| March 2, 2026 | $1.86 billion | February 27, 2026 |
| December 1, 2025 | $1.92 billion | October 23, 2025 |
Other advisers in Boston
| Adviser | City | AUM | Private funds | Source |
|---|---|---|---|---|
| Portolan Capital Management, LLC | Boston | $2.02 billion | 3 | adviserinfo.sec.gov |
| Boston Family Office LLC | Boston | $2.02 billion | Not listed | adviserinfo.sec.gov |
| Advent Global Opportunities Management LLC | Boston | $2.02 billion | 4 | adviserinfo.sec.gov |
| Brooke Private Equity Associates Management LLC | Boston | $1.94 billion | 14 | adviserinfo.sec.gov |
| Fifth Down Cap LLC | Boston | $1.87 billion | 60 | adviserinfo.sec.gov |
| Aristotle Capital Boston, LLC | Boston | $1.83 billion | Not listed | adviserinfo.sec.gov |
| TFC Financial Management Inc | Boston | $1.78 billion | Not listed | adviserinfo.sec.gov |
| Nonantum Capital Partners | Boston | $1.78 billion | 12 | adviserinfo.sec.gov |
Also on SpecStream
- Investment advisers in Boston, MA
- Investment advisers in Massachusetts
- Advisers with $1 billion to $10 billion in AUM
- Advisers serving pooled investment vehicles
- Advisers serving pension and profit sharing plans
- Advisers that manage private funds
- Monashee Investment Management, LLC on the SEC's adviser search
Public data published by the US Securities and Exchange Commission (US government work). Advisers report these values themselves in Form ADV, and neither the SEC nor the states approve or guarantee them. AUM is regulatory assets under management as the adviser reported it in Form ADV item 5.F, which can differ from the AUM a firm quotes elsewhere. Exempt reporting advisers do not report AUM. Office address, phone and website are the adviser's main office as filed; a firm that files its main office as a private residence shows no street address or phone. An Item 11 disclosure is a reported event, not a finding about the firm today. Details for each firm are on the SEC's Investment Adviser Public Disclosure site. This page uses SEC data and is not endorsed or certified by the SEC. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.