Water Island Capital,LLC (New York)


Water Island Capital,LLC is a large advisory firm based in New York. It manages $3.01 billion of regulatory assets for 10 client accounts. It has been registered with the SEC as an adviser since 2012.

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Water Island Capital provides portfolio management for investment companies and 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.

Water Island Capital: assets under management

The assets under management (AUM) of Water Island Capital,LLC is $3.01 billion, all of which is managed in discretionary accounts. The firm's AUM has grown by 34% since the beginning of its operation, and the company doesn't manage any assets belonging to foreign clients.


The firm manages $3.01 billion in discretionary accounts. On average, the discretionary accounts where all decisions are made on behalf of the client hold $300.87 million each.

Fees & Commissions

The advisory firm has several streams of revenue. Clients pay Water Island Capital,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 Water Island Capital serves?

The firm provides services to investment companies and pooled investment vehicles. The largest group of clients of Water Island Capital is investment companies with 7 clients and $2.88 billion of assets under management. Among the 8 most similar advisory firms, Water Island Capital has the highest percentage of investment companies out of all clients.


The amount of regulatory assets under management is $3.01 billion for 10 clients. None of the firm’s clients are foreign persons or businesses.

Water Island Capital also advises several private funds. Namely, two hedge funds and one other private fund. The minimum investment commitment required of non-related persons ranges from $250,000 to $50,000,000.

Careers at Water Island Capital,LLC

The company employs 43 people that are either part- or full-time employees. 37 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
John Sabbott Orrico Managing member & management committee member 1 Jan 2000 50% - 75% 1189995
Matthew Hemberger Elected manager/ chief financial officer 1 Jan 2002 Other 1450525
Mark Allen Campbell Minority owner 1 Jan 2004 Other 6048271
Jonathan Neal Schonberg Minority owner 1 Mar 2006 Other 3211200
William B. Keena Chief administrative officer & management committee member 1 Jan 2010 Other 1237385
Matthew James Osowiecki Minority owner 1 Jan 2010 Other 5228242
Roger Phillip Foltynowicz Minority owner 1 Dec 2010 Other 4214629
Todd Wistar Munn Minority owner 1 Dec 2010 Other 2784265
Eric Michael Casadei Minority owner 1 Dec 2010 Other 4207268
Carisa Lynne Jackson Minority owner 1 Dec 2010 Other 5900359
Jonathan Neal Schonberg Minority owner 1 Dec 2010 Other 3211200
Mark Allen Campbell Minority owner 1 Dec 2010 Other 6048271
Jennifer Ann Avicolli Chief compliance officer 1 Jan 2012 Other 4936014
Christina Chew Senior managing partner & management committee member 1 Dec 2013 Other 2828425
Matthew James Osowiecki Management commitee member 1 Nov 2014 Other 5228242
Jonathan Thomas Hickey Management committee member 1 Nov 2014 Other 4597544
Aditya Bindal Chief risk officer 1 Sep 2015 Other 4970530
Laura Kimberly Wajs Chief compliance officer 1 May 2016 Other 3067704
Ludmila Chwazik Chief compliance officer 1 Nov 2016 Other 6028343
Justin Michael Dunleavy Management committee member 1 Jan 2017 Other 5082457
Curtis Barger Watkins Management committee member 1 Jan 2017 Other 6776312

Based in New York

The principal office where Water Island Capital,LLC performs its advisory services is located at 41 Madison Avenue, New York, NY 10010 2202, 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 800-560-8210 or by fax 646-513-2642. The normal business hours are 9am - 5pm on Monday - Friday. You can find more information about the New York firm at arbitragefunds.com.