Sir Capital Management L.P. (New York)


Sir Capital Management L.P. is a large advisory firm based in New York. It manages $1.36 billion of regulatory assets for 4 client accounts. It has been registered with the SEC as an adviser since 2012 and has operated in the jurisdiction of New York.

Sir Capital 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.

Sir Capital Management: assets under management

The assets under management (AUM) of Sir Capital Management L.P. is $1.36 billion, all of which is managed in discretionary accounts. The firm's AUM has gone down by -19% since the beginning of its operation, and $271 million of the total AUM is attributable to clients outside of the United States.


The firm manages $1.36 billion in discretionary accounts. On average, the discretionary accounts where all decisions are made on behalf of the client hold $339.64 million each.

Fees & Commissions

The advisory firm has several streams of revenue. Clients pay Sir Capital Management L.P. for their services and products based on a percentage of assets under management and performance-based fees. Compensation based on assets under management promotes a long-term relationship between a client and the adviser and helps align mutual interests. These fees don’t include brokerage commissions, interest, taxes, and other account expenses.

What kind of clients Sir Capital Management serves?

The only and largest group of clients of Sir Capital Management is pooled investment vehicles with 6 clients and $1.36 billion of assets under management. Among the 10 most similar advisory firms, Sir Capital Management has the 3rd highest percentage of pooled investment vehicles out of all clients.


The amount of regulatory assets under management is $1.36 billion for 6 clients. 66% of the firm’s clients are foreign persons or businesses.

Sir Capital Management also advises several private funds. Namely, two hedge funds. The minimum investment commitment required of non-related persons ranges from $0 to $5,000,000.

Careers at Sir Capital Management L.P.

The company employs 16 people that are either part- or full-time employees. 56 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
Vincent Stephen Maddi Portfolio manager 1 Jul 2007 25% - 50% 1979072
Shawn Michael Brennan Portfolio manager 1 Jul 2007 25% - 50% 2430075
Lp Satellite Asset Management Limited partner 1 Jul 2007 Other 13-4065352
Sir Management Gp Llc General partner 1 Jul 2007 Other 06-1821298
Benjamin Dean Fooshee Chief operating officer and chief compliance officer 1 Jan 2008 Other 2305524
Mirco Ronald Elias Chief financial officer 1 Jan 2008 Other 6027769
Michael L Clark Portfolio manager 1 Jan 2008 Other 3184024
Shawn Brennan 2009 Grat Limited partner 1 Dec 2009 Other 27-6369302
Vincent S. Maddi 2009 Grat Limited partner 1 Dec 2009 Other 27-6369357
Shawn Michael Brennan Trustee/brennan family trust 2009 1 Jan 2013 Other 2430075
Brennan Family Trust 2009 Limited partner 1 Jan 2014 Other 04-3523567

Indirect Owners

The SEC currently registers 5 indirect owners.

Name Entity Date acquired Ownership Employer ID
Lief Dov Rosenblatt Limited partner 1 Jul 2007 25% - 50% 702456
Shawn Michael Brennan Managing member/sir management gp llc 1 Jan 2008 Other 2430075
Vincent Stephen Maddi Managing member/sir management gp llc 1 Jan 2008 Other 1979072
Mark David Sonnino Managing partner/satellite asset management, l.p. 1 Jan 2009 Other 1324240
Lief Dov Rosenblatt Managing partner/satellite asset management, l.p. 1 Jan 2009 Other 702456

Based in New York

The principal office where Sir Capital Management L.P. performs its advisory services is located at 640 8 Th Avenue, New York, NY 10036, which is also the mailing address of the firm. It doesn’t run an office outside of the United States.

You can reach the main office by calling the phone number 212-993-7100 or by fax 212-993-7122. The normal business hours are 8am - 5pm on Monday - Friday.