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Volumetric Fund has a well-experienced and dedicated team of industry professionals. From our knowledgeable portfolio managers to our committed board of directors, in conjunction with our auditors, banks, custodian, trustee and brokers, we are all committed to quality and service of our shareholders.


Portfolio Mangers

A Mutual Fund

with a Difference

A Mutual Fund with a Difference
Gabriel Gibs
Former: CEO, Chair and 
Portfolio Manager
Gabriel Gibs, Founder

Gabriel Gibs was born in Budapest, Hungary in 1936. He came to the United States in 1957 as a college student. Initially, he attended the University of California at Berkeley as a chemical engineering major, before he moved to New York. He received a B.S. degree in Chemistry in 1963, at what is now the City University of New York (CUNY). He has also received a M.B.A. degree in Finance from Pace University in 1974. The principles of his MBA thesis, titled "Forecasting Stock Trends By Volume Analysis", has been the foundation of  the Volumetric Fund's trading system. 

After graduation Mr. Gibs' first job was a chemist in the Lederle Division of American Cyanamid Co., since acquired by Pfizer, in Pearl River, New York. Then, from 1968 to 1975, he worked for St Regis Paper Company, now part of International Paper, as a chemist. During these years he became very interested in the stock market as a hobby. 

Between 1975 and 1986 he was employed in various capacities by Lonza, Inc., a chemical company in Fair Lawn, New Jersey. He started Volumetric Fund in 1978, as 17 co-workers, friends, and relatives invested their money in the new investment club. In 1986, as Volumetric kept growing, Mr. Gibs left Lonza to manage the fund full time. In September of 1987, Volumetric Fund went public. 

Mr. Gibs has served as a Portfolio Manager since inception to April 2021. He served as CEO from 1978 to April 2016 and Chair from 1978 to June 2018. He was appointed Chairman Emeritus in June 2018. He was the former President of Volumetric Advisers, Inc, the Fund's investment adviser.

Mr. Gibs had been a guest on various television and radio shows and was interviewed numerous times for newspaper articles.

Sadly, Gabriel passed away in November 2021, after battling Parkinson's Disease.

Mr. Gibs was married and has two children and four grandchildren. 



Jeffrey Gibs
CEO, President,
Senior Portfolio Manager,
Chief Compliance Officer
Jeffrey Gibs, CEO, Portfolio Manager

Jeffrey Gibs was born in 1966 and raised in New York.  He attended Monmouth University, where in 1988 he earned a B.S. degree in Business with concentration in Computer Systems.


Mr. Gibs began his investment industry career in 1988 at Chase Manhattan Bank (now J.P. Morgan Chase) in the global custody area for the U.S. Private Banking Division.  Thereafter, Mr. Gibs had worked several years for two separate investment advisers, managing their back and middle office operations and held the position of compliance officer. Most recently, he was Vice President and manager of a hedge fund administration group at US Bank. In addition to these companies, Mr. Gibs has served as a consultant to Volumetric Fund since 1988 and was employed full time as Vice President from 1997 to 2001. He has served as Volumetric Fund’s Chief Compliance Officer (CCO) since 2007.

In 2015, he became a full time employee again. From  2015 to 2016, he served as Executive Vice President and in 2016, he was appointed as President and Portfolio Manager to Volumetric Fund. Mr. Gibs was appointed Chief Executive Officer in 2022. Additionally, he is President of Volumetric Advisers, Inc.


Mr. Gibs performs a vast area of responsibilities in the areas of  portfolio management, operations, accounting, shareholder relations, compliance and marketing.

Jeffrey is the son of Gabriel Gibs, the Founder of Volumetric Fund. He is married with two children. Jeffrey enjoys going to the beach and spending quality time with his family.

Alex Aleman
Vice President
Portfolio Manager

Alex Aleman is a New York native and earned a B.B.A. degree in Accounting from Iona University in 1995.  He began his career in the financial services industry as Controller at a registered investment adviser, institutional investment management, and several hedge fund firms. For 18 years, he was the Head Trader at Bennett Management Corp., a distressed debt hedge fund, where he managed all financial operations and served as Valuation Committee member.  He has more than 20 years of fund management experience in operations and accounting.


Mr. Aleman is Vice President and Portfolio Manager of Volumetric Fund and Volumetric Advisers, Inc., since 2024.


Alex is married and has three children. He enjoys spending time with his family, whether it’s at the beach or traveling.

Alex Headshot_edited.jpg


Irene Zawitkowski
Former CEO

Irene Zawitkowski was born in 1953 in New Jersey. She has a B.S. degree in Accounting and received an MBA degree in Finance from Fairleigh Dickinson University in 1978. 

Ms. Zawitkowski was working at Lonza, Inc. as an accounting supervisor in the mid 1970s. She assisted Mr. Gibs in setting up Volumetric in 1978. She has been an officer of the Fund since inception to 2022. She served as President and Portfolio Co-Manager from September 2003, to 2016. Ms. Zawitkowski also served as Chief Executive Officer ("CEO") from 2016 to 2022 and Senior Portfolio Manager of the Fund from 2016 to 2021, and as Portfolio Manager from 2021 to 2022. Ms. Zawitkowski was appointed Chair of the Board in 2018. She was also Executive Vice President of Volumetric Advisers, Inc. until 2022.


Ms. Zawitkowski is married and has two children. Irene enjoys traveling and gardening. 

Irene Zawitkowski, Former CEO
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Cohen & Company - Independent Registered Public Accounting Firm
First National Bank of Omaha - Custodian of Retirement Accounts
LexisNexis Risk Solutions - Blue Sky Services
Thompson Hine LLP - Legal Counsel
Ultimus Fund Solutions - Transfer Agent and Fund Accountant
Ultimus Fund Distributors, LLC - Mutual Fund Distributor
US Bank - Custodian for Assets

You should carefully consider the investment objectives, potential risks, management fees, and charges and expenses of the Fund before investing. The Fund's prospectus contains this and other information about the Fund and should be read carefully before investing. You may obtain a current copy of the Fund's prospectus by calling 1-800-541-FUND. Distributed by Ultimus Fund Distributors, LLC. (Member FINRA)

Board of Directors
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