Stillrock Management Inc (New York)


Stillrock Management Inc is a large advisory firm based in New York. It manages $129.3 million of regulatory assets for 46 client accounts. It has been registered with the SEC as an adviser since 2001 and has operated in the jurisdictions of Connecticut and New York.




Stillrock Management provides portfolio management for individuals and small businesses. It doesn't provide financial planning services to its clients. On top of advisory services, the firm doesn't engage in other business activities.

Stillrock Management: assets under management

The assets under management (AUM) of Stillrock Management Inc is $129.3 million. The firm's AUM has grown by 17% since the beginning of its operation, and the company doesn't manage any assets belonging to foreign clients.


The firm manages $120.4 million in discretionary accounts and $8.9 million in non-discretionary accounts. On average, the discretionary accounts where all decisions are made on behalf of the client hold $3.88 million each. Non-discretionary accounts, where clients actively manage their portfolios, generally hold around $593.33 thousand.

Fees & Commissions

The advisory firm has a single stream of revenue. Clients pay Stillrock Management Inc for their services and products based on a percentage of assets under management. 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.

Careers at Stillrock Management Inc

Arthur Stephen Penn has been acting as President since 1 Jul 1987. Louise Shim has served as the Chief Investment Officer since 1 Jan 2005. Margot S. Rubin joined the executive team most recently as the Chief Compliance Officer.

Direct owners and executive officers



Name Entity Date acquired Ownership Employer ID
David Douglas Elliman Treasurer 1 Jul 1987 25% - 50% 4394278
Arthur Stephen Penn President 1 Jul 1987 25% - 50% 4394283
Robert Model Vice president 1 Jan 1993 25% - 50% 4394292
Kathleen Corrado Compliance officer 1 Jan 1999 Other 2605293
Loris Muzzatti President 1 Jan 2005 Other 4928691
Louise Shim Chief investment officer 1 Jan 2005 Other 2308193
David Douglas Elliman Co-chairman 1 Dec 2005 50% - 75% 4394278
Arthur Stephen Penn Co-chairman 1 Dec 2005 50% - 75% 4394283
Margot S. Rubin Chief compliance officer 1 Mar 2006 Other 5109343

Based in New York

The principal office where Stillrock Management Inc performs its advisory services is located at 150 E 52 Nd St, 8 Fl, New York, NY 10022, 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 212-744-9500 or by fax 212-820-9743. The normal business hours are 9:00-5:00 on Monday - Friday.