Sunriver Management LLC (Stamford)


Sunriver Management LLC is a large advisory firm based in Stamford. It manages $727.62 million of regulatory assets for 4 client accounts. It has been registered with the SEC as an adviser since 2015 and has operated in the jurisdiction of Connecticut.

Sunriver Management provides portfolio management for pooled investment vehicles. It doesn't provide financial planning services to its clients. On top of advisory services, the firm doesn't engage in other business activities.

Sunriver Management: assets under management

The assets under management (AUM) of Sunriver Management LLC is $727.62 million, all of which is managed in discretionary accounts. The firm's AUM has grown by 189% since the beginning of its operation, and $333.89 million of the total AUM is attributable to clients outside of the United States.


The firm manages $727.62 million in discretionary accounts. On average, the discretionary accounts where all decisions are made on behalf of the client hold $181.91 million each.
Sunriver Management has custody of $727.62 million in cash and securities for 4 clients in total but doesn’t act as a qualified custodian.

Fees & Commissions

The advisory firm has several streams of revenue. Clients pay Sunriver Management LLC for their services and products based on a percentage of assets under management and performance-based fees. The adviser charges an additional fee when a set benchmark is outperformed. These fees don’t include brokerage commissions, interest, taxes, and other account expenses.

What kind of clients Sunriver Management serves?

The only and largest group of clients of Sunriver Management is pooled investment vehicles with 4 clients and $727.62 million of assets under management. Among the 12 most similar advisory firms, Sunriver Management has the 3rd highest percentage of pooled investment vehicles out of all clients.


The amount of regulatory assets under management is $727.62 million for 4 clients. 75% of the firm’s clients are foreign persons or businesses.

Sunriver Management also advises several private funds. Namely, one hedge fund. The minimum investment commitment required of non-related persons is $5,000,000 for each fund.

Careers at Sunriver Management LLC

The company employs 10 people that are either part- or full-time employees. 50 percent of the employees work as investment advisers or researchers. No employees are registered as investment adviser representatives with the state securities authorities.

There isn’t anyone with the role of looking for and bringing in new clients on behalf of the firm. The firm doesn’t compensate employees in addition to the salary for bringing in new clients. Employees don’t receive compensation from other entities for client referrals.

Direct owners and executive officers



Name Entity Date acquired Ownership Employer ID
Justin D Morgan Chief financial officer and chief compliance officer 1 Jun 2015 Other 4376843
Randolph Willett Cook President and portfolio manager 1 Jun 2015 Other 2644615
Justin David Morgan Chief financial officer and chief compliance officer 1 Jun 2015 Other 4376843
Sunriver Global Lp Managing member 1 Aug 2015 75% - 100% 30-0880875

Indirect Owners

The SEC currently registers 2 indirect owners.

Name Entity Date acquired Ownership Employer ID
Sunriver Advisors Llc General partner 1 Jun 2015 75% - 100% 47-4868192
Randolph Willett Cook Managing member 1 Jul 2015 75% - 100% 2644615

Based in Stamford

The principal office where Sunriver Management LLC performs its advisory services is located at 201 Tresser Boulevard, Stamford, CT 06901, which is also the mailing address of the firm. An additional office of the firm is in New York, NY. It doesn’t run an office outside of the United States.

You can reach the main office by calling the phone number (203) 900-3900. The normal business hours are 9-6pm on Monday - Friday.