Core Management Team

Representing only the best and brightest minds worldwide, Avant Global’s Core Management Team works directly with all clients to provide tailored access to the world’s top subject-matter experts and practitioners in more than 40 specialized fields around the globe.

For market specific support, Avant Global’s international advisement team of local business experts are also on hand for country-specific advice and introductions. For more details on the industries and networks we cover please contact us directly.  

Demetri Argyropoulos, Founder & CEO

In the role of Chief Executive Officer, Demetri leads strategy, performance, implementation and corporate governance of Avant Global.

Demetri is highly regarded in the global business community for his proven track record in building successful relationships. By establishing value, commonalities and rapport, Demetri creates an atmosphere of trust that enables relationships to flourish. Demetri performs a vital role in helping to succinctly negotiate and close deals between parties.

Since founding Avant Global, Demetri and his partners have been involved in forging relationships, creating opportunities, and generating over $10 billion in value creation across a range of projects and businesses. He has been the catalyst for successfully originating, co-founding, or seeding over 50 new companies, across a variety of industries ranging from medical devices to Internet advertising.

Demetri is a cofounder of Owl BioMedical (recently acquired by German multi-national Miltenyi Biotec) and on the advisory boards of Juggle Labs, Sword Diagnostics, bSpot, BloomThat and

In addition to his business interests, Demetri’s has raised tens of millions of dollars for charity working with numerous multi-national foundations, charities and non-government organizations including the Clinton Foundation, Promitos, the Santa Barbara Historical Society, 1199 Foundation, Lotus Land Foundation, American Lung Association, Muscular Dystrophy Foundation, Westmont College, CALM, Unity Shop, United Way, Habitat for Humanity, Marymount School, Santa Barbara Symphony, American Hellenic Institute, and the Ronald Reagan Presidential Foundation. He is a member of the National Hellenic Society, YPO-WPO International, Milken Institute Young Leaders Circle, Tiger 21, L100, the Harvard Business School Alumni Organization, and the California Republican Advisory Council. He is also serving as an Engagement Officer on the Executive Committee of the Global Diplomacy Network.

In 2016 in recognition of his achievements and humanitarian actions, Demetri was inducted into the Order of Merit of Savoy, an order of knighthood bestowed by the Royal House of Savoy, the last Kings of Italy. Demetri was also the recipient of the 2010 Gusi Peace Prize for achievements, ideals and values. He is an honorary Naval Aviator, has been recognized as one of the ‘Top 40 business leaders under 40’ by the Pacific Coast Business Times, and was named as one of ‘Greek America’s Forty Under 40 Class of 2014.’  He was also awarded the 2003 National Leadership Award and the 2003 Business Man of the Year Award by the National Republican Congressional Committee.

Demetri graduated from Westmont College, studied at the American University in Washington, D.C. and Georgetown University ‘s American Government and Foreign Policy program, as well as being a graduate of the Exponential Technologies Executive Program at Singularity University. He is also an alumni of Harvard Business School, where he graduated from the three year Owner/President Management program (OPM) and is a current member of the Harvard Business School Association of Southern California.


Demetri Headshot 2016-41

Scott K. Mullen, Partner

Scott Mullen serves as a Partner to Avant Global, responsible for the firm’s investments, corporate strategy, client relationships and operational governance.

Prior to working with Avant Global, Scott’s Wealth Management Services career has been spent primarily working with ultra-high-net worth entrepreneurs, families, and private foundations on complex issues of investment management and multi-generational planning. 

Scott’s 30 year investment career began with Drexel Burnham Lambert in Beverly Hills, CA in 1986 and continued with Sutro & Co. where Scott spent several years on the bond trading desk. Scott spent over eleven years with Salomon Smith Barney, in Los Angeles, California, where he was Senior Vice President of Investments and Senior Portfolio Manager. 

Moving to Austin, Texas in 2001, he served as President and Chief Operating Officer of MFI Capital, a single family office specializing in asset management across a broad range of investment classes in both the public and private sectors. 

Scott most recently moved back to Los Angeles where he was Partner for several different billion dollar national RIA firms, opening and operating their California offices while also serving on the firms’ Investment Committees and advising families on asset allocation, portfolio construction, and wealth and tax planning. 

Scott has served on the boards of the MFI Foundation, Advisory Councils for Fidelity Investments Family Office Service Group and the University of Virginia National Committee on University Resources. Scott also served on the Board of Directors for the Austin Chapter of the Young Presidents Organization (YPO) as Membership Chair. He remains a current member of YPO-WPO International and is also a current member of the Harvard Business School Association of Southern California.

Scott received a BA degree from the University of Virginia and is an alumni of Harvard Business School, where he graduated from the three year Owner/President Management program (OPM). Scott and his wife, Terri, have been married for 27 years and have four children.




Thomas J. Carroll, CIO & COO- Chief Investment Officer & Chief Operating Officer

Thomas J. Carroll serves as Avant Global’s Chief Investment Officer, where he leads investment strategy, develops synergies for applied compounding relationship development, portfolio company management, and research through a catalyst focused lens to enhance the value propositions of all activities within the company. Thomas’ process begins with an intuitive approach which he has built over the years of understanding successful entrepreneurs’ inherent intricacies to explore disruptive ideas and ascertain their value, as well as address potential headwinds. Additionally, Thomas uses a “Learn, Acquire, and Partner” approach to build an ecosystem of symbiosis that can incorporate and leverage the innovative capacity of new technologies created in startups and other enterprises.

Carroll joined Avant Global in May 2013, and previously served as the firm’s Chief Financial Officer and Chief Operations Officer. In these dual roles, Carroll was charged with the management of the holding company’s overall financial operations, investment due diligence and strategic vision. Carroll has played a vital, ongoing role in the company’s continued expansion. He is also responsible for developing many of the business’s now central strategic processes that have allowed the company to rapidly grow and diversify.




Heather Dalton, Vice President & Chief Relationship Officer

Heather Dalton serves as Vice President and Chief Relationship Officer for Avant Global.

In this role, she assists with the management of our client relationships, as well as the implementation of overall governance and strategy for Avant Global.

Prior to joining our team, Heather spent over 15 years at Dell Inc. Most recently she served as Financial Analyst with Investor Relations, and previously held roles in the Office of the CFO and in the Product Group.



Jessica Holmes, Director of Operations

Jessica Holmes serves as Avant Global’s Director of Operations. Prior to joining the Avant Global team Holmes spent over a decade working in the retail and financial services industry.

Holmes began her career in the financial services industry at Riverside, LLC in 2004. Reporting directly to the company’s founder, Holmes assisted with day-to-day management of company until it was successfully acquired in 2014 by an industry leader in second hand valuables.

Following this acquisition, Holmes was promoted to the role of Regional Supervisor. Working directly with upper management to develop and implement company-wide processes and strategies, Holmes was responsible for financial results and P&L management within her region of East Tennessee. She was also charged with planning, assigning, and directing all operational tasks in multiple stores located within that region. As a driven leader within the company, she became known for her ability to develop strong teams focused on delivering value, exceeding goals, and achieving success.

Holmes lived in the Knoxville, Tennessee area before moving to Santa Barbara. She attended East Tennessee State University where she earned her Bachelors of Business Administration.



Tori Ippolito, Controller & Assistant to CIO

As Avant Global’s Controller, Victoria Ippolito is responsible for preparing financial statements, general ledger, payroll, AR/AP, budgeting and various special analyses. Her role is a combination of operational and strategic roles primarily through managing accounting and financial control functions, and establishing strategies for the profitable long-term growth of the business. She also serves as Assistant to the Chief Information Officer.

Ippolito joined the Avant Global team as an intern in 2016, and took on a full-time role as the firm’s Junior Controller and Office Manager earlier this year.

Previously, she was an Assistant Planner at Siemens Planning, a private permitting and land-use consulting firm located in Carpinteria.

Outside the office, Ippolito spends time with students of San Marcos High School as a leader of Young Life Santa Barbara, a non-denominational Christian ministry that reaches adolescents.

In the fall of 2015, Ippolito lived with a host family in Querétaro, Mexico where she was immersed in the culture, became proficient in the language, and created a second home.

Ippolito grew up in San Diego and moved to Santa Barbara to attend Westmont College where she earned her Bachelor’s Degree in Economics and Business with a minor in Spanish.


Tori Ippolito bio photo

Cory Klippsten, Venture Capital

Cory Klippsten is a growth strategy advisor for technology startups and venture capital firms.  He’s operated as a C-level startup exec, raised multiple rounds of venture capital from top investors, and worked for Google, McKinsey, Microsoft and Morgan Stanley.  He holds an MBA in Entrepreneurship, Finance and International Business from the University of Chicago.

Cory grew up in San Francisco and Seattle, split 15 years between New York and Chicago, and now lives in Los Angeles with his wife and young daughter.  His interests include basketball, tennis, history and travel (Istanbul and Barcelona are favorites, but anywhere on the Mediterranean will do).



Meghan Powers, Corporate Communications Director

Meghan Powers is Senior Account Manager at Pace Public Relations. Meghan has an extensive background as a TV news producer and writer. She has served as a booker and segment producer for various top-rated national news programs, including FOX News Channel’s FOX & Friends and CNBC’s Fast Money. Most recently, Meghan was the lead Interview Producer for Al Jazeera America’s Real Money with Ali Velshi. At FOX News Channel, she traveled for the network’s coverage of major news stories, including Hurricane Katrina, the Sago mining accident, and the disappearance of Natalee Holloway. She is a graduate of Denison University in Granville, Ohio.



For more details on Avant Global’s extended advisory network please contact us directly.