Our Team

Leadership Team

Lorraine Wang, CFA®

CEO & President

Zlatko Martinic, CFA®

Chief Investment Officer

Calvin Lee

Investment Strategist

Parry Wang, CFA

Senior Portfolio Manager

Bill O’Brien, MBA, CIMA

Client Relationship Director

Board of Directors

Lorraine Wang, CFA®

Board Member

Laura Thurow, CFA®

Board Member

Karrie Southall, CIPM

Board Member

Jennifer W. Chen

Board Member

Yu-Ming Wang

Board Member

Lorraine Wang, CFA®

CEO & President

Lorraine is the President and CEO of GAMMA Investing. Lorraine is a 30-year industry veteran in financial services, with over two decades of institutional asset management experience. She has proven track record in growing an ETF startup to a $300 billion franchise in 14 years, through product innovation and successful commercialization of a unique product range. Previously, Lorraine was the Global Head of ETF Products & Research at Invesco PowerShares. She also served in various leadership positions at the New York Stock Exchange, Morgan Stanley, JP Morgan and Citi. Lorraine received a Bachelor of Science degree in Management Science from MIT and is a Chartered Financial Analyst.

Zlatko Martinic, CFA®

Chief Investment Officer

Zlatko is the Chief Investment Officer at GAMMA Investing. Zlatko is a seasoned investment management professional with over 25 years of experience managing and delivering innovative and bespoke custom portfolio solutions. He is responsible for leading GAMMA’s investment process by using an institutional approach to index investments that blends risks and investment objectives. During his career, he built and managed high performing investment teams servicing strategic account relationships.

Prior to joining GAMMA, Zlatko was the Head of Transition Management at Penserra and the Head of Portfolio Implementation Americas at BlackRock. He is a global citizen having lived and worked in Switzerland and speaks 5 languages. He attended the Business and Commerce School in Baden, Switzerland and is a Chartered Financial Analyst.

Calvin Lee

Investment Strategist

Calvin is responsible for working with advisors to construct custom index strategies, providing transition analyses and ongoing support. Calvin has over 20 years of experience in portfolio management and quantitative optimization. Prior to joining GAMMA, Calvin was an ETF portfolio manager with iShares where he developed and managed many tax harvesting strategies. He was also the Head of Interim Beta Strategies for BlackRock’s Transition Management Group. After BlackRock, he spent 5 years as the senior transition manager at Penserra Securities. Most recently, he was a financial planner at Shum Financial Group. Calvin has a Bachelor’s degree in Biological Sciences and Economics from the University of California at Davis and a Master’s degree in Financial Planning from Golden Gate University.

Parry Wang, CFA

Senior Portfolio Manager

Parry is responsible for implementing GAMMA’s investment process and solutions. He has over 16 years of experience in the investment industry, with expertise in portfolio optimization and management across equities, fixed income and financial derivatives. Prior to joining GAMMA, Parry had worked as a Portfolio Manager/Trader at Consilium Wealth Management, Blackrock, Fannie Mae and Mellon Capital Management. He also worked as a research engineer based in Hong Kong and Singapore early in his career. Parry has Bachelor and Master’s degrees in Engineering from Tianjin University in China, a Master’s degree in Engineering from the University of Wyoming, and a Master’s degree in Financial Engineering from University of California at Berkeley. He is also a Chartered Financial Analyst.

Bill O’Brien, MBA, CIMA

Client Relationship Director

Bill is responsible for heading up distribution of Gamma’s Custom Index Solutions to Wealth Management Advisors across the U.S. He has over 15 years of investment industry experience. In previous roles, Bill worked at Van Eck as well as Amundi Pioneer providing distribution across mutual funds, ETFs, & SMA strategies. He received his MBA from Suffolk University in Boston and holds his CIMA® certification from the Investments & Wealth Institute.

Lorraine Wang, CFA®

Board Member

Lorraine is the President and CEO of GAMMA Investing. Lorraine is a 30-year industry veteran in financial services, with over two decades of institutional asset management experience. She has proven track record in growing an ETF startup to a $300 billion franchise in 14 years, through product innovation and successful commercialization of a unique product range. Previously, Lorraine was the Global Head of ETF Products & Research at Invesco PowerShares. She also served in various leadership positions at the New York Stock Exchange, Morgan Stanley, JP Morgan and Citi. Lorraine received a Bachelor of Science degree in Management Science from MIT and is a Chartered Financial Analyst.

Laura Thurow, CFA®

Board Member

Laura is Executive Director of Wealth Solutions and Operations for Baird’s Private Wealth Management (PWM) business. In this role, she is responsible for the people, platforms and back office services that support Baird’s financial advisors in all aspects of their wealth management practices.

As part of the PWM Leadership Team, she is also involved in various strategic initiatives in support of Baird’s overall wealth management platform. Additionally, Laura serves as a member of Baird’s Executive Committee.

Laura received a Bachelor of Arts degree in Economics from Trinity College and an MBA from the University of Chicago Booth School of Business. She has earned the CFA charter and is a member of the CFA Society of Milwaukee.

Karrie Southall, CIPM

Board Member

Karrie is the Chief Operating Officer at RiverFront Investment Group, bringing over 20 years of experience to her role directing the portfolio administration, trading, compliance, human resources, finance, and IT functions of the firm. In addition, she serves on the firm’s Board of Directors, Executive Committee, and leads the Operating Committee.

Karrie has been with RiverFront since the company’s founding in 2008. She began her career at Wachovia Securities in 1999 as a Financial Advisor for a six-member Wealth Management team. Karrie began working with the Wachovia Advisory Service Group – Compass Advisory Portfolios in 2004, where her primary role was marketing of the portfolios and disseminating market information to Advisors.

Karrie previously served as the Co-Head of Treasurer/ Finance & Operations for Women in ETFs (WE), a nonprofit organization that seeks to create opportunities for professional advancement by expanding connections among women in the ETF industry.

Karrie earned a BA in Economics and Spanish from the University of Virginia, as well as an MBA from the University of Richmond. She also holds the Certificate in Investment Performance Measurement™ (CIPM®) designation from the CFA Institute.

Karrie’s endurance and quickness are apparent both in and out of the office, as she spends a great deal of time focused on one of her true strengths – her competitive spirit. Karrie enjoys participating in 5Ks, 10Ks, and half marathons.

Jennifer W. Chen

Board Member

Jennifer has nearly 30 years of finance, accounting, and operating experience, ranging from investment banking to start-up companies. She served as the CFO for Phoenix Venture Partners and was the founder and CEO of Course 15 Associates, a CFO consulting company that provides CFO services to venture backed technology companies. Prior to her startup experience, Jennifer was an executive with Wells Fargo Capital Markets, Goldman Sachs, and J.P. Morgan Securities. Jennifer earned a Bachelor of Science degree in Management, Finance & Information Systems from MIT as well as a Master of Science degree in Accounting from Boston College.

Yu-Ming Wang

Board Member

Yu-Ming was previously the President and Global CIO at Matthews Asia, responsible for the strategic vision and leadership of the investment team. Prior to joining Matthews Asia in 2020, Yu-Ming was the Deputy President and Global CIO at Nikko Asset Management, responsible for strategic development and oversight of Nikko’s global investment team. Previously, Yu-Ming was Head of Fixed Income Asia at Manulife Asset Management in Hong Kong. He also worked at Wachovia Bank in senior roles in the capital markets division in New York, before moving to Hong Kong to head the global markets business for the Asian region. Yu-Ming received his MBA from New York University Stern School of Business and received a Bachelor of Science degree in Mechanical Engineering from MIT.

Jennifer W. Chen

Chief Financial Officer

Jennifer is the Chief Financial Officer of GAMMA Investing. She has nearly 30 years of finance, accounting, and operating experience, ranging from investment banking to start-up companies. She also served as the CFO for Phoenix Venture Partners and was the founder and CEO of Course 15 Associates, a CFO consulting company that provides CFO services to venture backed technology companies. Prior to her startup experience, Jennifer was an executive with Wells Fargo Capital Markets, Goldman Sachs, and J.P. Morgan Securities. Jennifer earned a Bachelor of Science degree in Management, Finance & Information Systems from MIT as well as a Master of Science degree in Accounting from Boston College.