Clients
Great Mountain Partners serves 11 clients. The average client has about $1.28 billion with the firm.
- Pooled investment vehicles11 clients100%
Show client breakdownHide client breakdown
| Client type | Clients | Regulatory AUM | Share | Avg. per client |
|---|---|---|---|---|
| Pooled investment vehicles | 11 | $14,107,025,927 | 100.0% | $1.28B |
| Total | 11 | $14,107,025,927 | 100% | $1.28B |
- Clients
- 11
- Regulatory AUM
- $14,107,025,927
- Share
- 100.0%
- Avg. per client
- $1.28B
Total
- Clients
- 11
- Regulatory AUM
- $14,107,025,927
- Share
- 100%
- Avg. per client
- $1.28B
What it does
Great Mountain Partners provides portfolio management for pooled vehicles. It is paid through a percentage of assets and performance-based fees.
Great Mountain Partners advises 11 private funds.
100.0% of assets ($14.11B across 11 accounts) are managed with discretion. 0% of clients are outside the U.S., and 0 clients received advice without assets under management last fiscal year.
Custodians
Great Mountain Partners has custody of client assets.
- All other custodians$14.11B100%
Ownership and leadership
Jonathan Rotolo owns 50% to 75% of Great Mountain Partners.
- Owns 50% to 75% of Great Mountain Partners LLC
Jonathan Rotolo
Control person · since March 2020
- Owns 50% to 75% of Great Mountain Partners LLC
Alexander Thomson
Control person · since March 2020
Leadership
- Ethan TyminskiChief Financial Officer
- Mallory PappChief Compliance Officer
- Jonathan RotoloManager and Member
- Alexander ThomsonManager and Member
Staff
- 17 employees
- 10 in advisory functions
Reported holdings
Great Mountain Partners’ reported 13F holdings total $9.28M across 1 positions, and the ten largest make up 100.0% of it.
- $9.28M
- Reported 13F value
- 1
- Positions
- 100.0%
- In the 10 largest
- −38.5%
- Value vs. prior quarter
- New Fortress Energy Inc. · Com CL A100.0%
Together, the ten largest are 100.0% of reported value.
A 13F covers only exchange-traded long positions the firm holds with discretion, so this $9.28M is not its $14.11B in regulatory assets and does not represent any individual client's portfolio.
Fees
Great Mountain Partners is paid through a percentage of assets under management and performance-based fees.
Brochure fee details have not yet been processed for this profile. Find its brochure on the SEC’s site.
Offices and registrations
Besides its headquarters, Great Mountain Partners has 1 office, with 2 listed addresses across 2 states.
Connecticut · 1 listed address
- 157 Church Street, 20th Floor, New HavenHQ
Michigan · 1 listed address
- 3001 Coolidge Road, East Lansing
Registration details
- Legal name
- Great Mountain Partners LLC
- Headquarters
- 157 Church Street, 20th Floor, New Haven, CT 06510
- Phone
- 203-993-6149
- Website
- Not reported
- SEC file
- 801-119799
- Structure
- Delaware LLC
- Fiscal year end
- December
This directory does not report disciplinary history, for any firm or individual, in either direction. The SEC publishes the complete record, including any disciplinary events, and it is the authoritative place to check one. See this firm's record on adviserinfo.sec.gov
Common questions
How many clients does Great Mountain Partners have?
Great Mountain Partners has 11 clients and manages $14.1 billion for them, as of March 2026.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 27 March 2026
What services does Great Mountain Partners offer?
Great Mountain Partners provides portfolio management for pooled vehicles.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file
How many financial advisors does Great Mountain Partners have?
Great Mountain Partners has 0 investment adviser representatives registered with state securities authorities, out of 17 employees, and 10 perform investment advisory functions. None are registered representatives of a broker-dealer or licensed insurance agents.
Source: Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file
Who owns Great Mountain Partners?
Great Mountain Partners’ direct owners are Jonathan Rotolo (50% to 75%) and Alexander Thomson (50% to 75%).
Source: Form ADV Part 1A, Schedules A and B, filed 27 March 2026
How does Great Mountain Partners get paid?
Great Mountain Partners is paid through a percentage of assets under management and performance-based fees. Its Form ADV lists no commissions among how it is paid.
Source: Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file