Meet the team

Our ETFs seek to provide investors with a way to own the opportunities that are shaping the future and moving markets, with expense ratios 40% cheaper than the average charged by our competitors.*

*Source:, Universe of 318 Theme Investing ETFs, as of 30 November 2023

Our Team

José Gonzalez


Dobromir Kamburov


Tracy Gilvarry Grant

General Counsel

Calvin Tsang

Head of US Product Management & Development

Taylor Krystkowiak

VP, Investment Strategist

Kevin Shao

VP, US Product Management & Development

Service Providers

Exchange Listing

ETF Distributors


Index Providers


Transfer Agent, Fund Administrations, Fund Accounting

Service Providers

José Carlos Gonzalez

Chief Executive Officer

José is the CEO and co-founder of Themes ETFs. He was also the co-founder and former director of Global X, a New York based provider of exchange traded funds. José was instrumental to the success of Global X, making the company a reference as a provider of exchange traded funds that nowadays has surpassed $10 billion in managed assets across more than 60 different products.

Throughout his career, José has acquired unique expertise in the asset management and brokerage business, having served in roles at Prudential Securities, MAPFRE Inversion, and Banco Santander. José earned his Bachelor’s degree from Universidad Autónoma de Madrid.

Dobromir Kamburov

Chief Operating Officer

Dobromir is the COO and co-founder of Themes ETFs. He is a cross-discipline innovator with strong aptitude for strategically assessing, formulating, and solving technical & business challenges in finance, robotics, and big-data. Dobromir is result-driven with a taste for high-impact projects that cross multiple industries.

Having a PhD in Electrical Engineering from Princeton University, Dobromir has co-authored over 30 articles in experimental condensed-matter physics, published in Physical Review Letters, Physical Review B, and Applied Physics Letters. His scientific work explored the properties of two-dimensional (2D) electron and hole systems in GaAs/AlAs quantum wells at very low temperatures and in the presence of strong magnetic fields.

Dobromir’s research pioneered a method to directly probe the size of the Fermi contour of low-field carriers and their high-field composite fermion counterparts near half-filled Landau level with the goal of fundamentally understanding the effects of feminization and the underlying symmetries between electrons and holes.

Tracy Gilvarry Grant

General Counsel

Tracy Grant is the General Counsel and co-founder of ThemesETFs.

Tracy is a seasoned, goal-focused legal professional with demonstrated track record of advising and representing high-profile international corporations, international investment banking institutions, mutual funds and insurance companies.

Her experience is in providing incomparable advice on mutual funds, secured transactions, financing transactions, securities and regulatory compliance and corporate and commercial law.

Calvin Tsang

Head of Product Management & Development

Calvin Tsang has been with Themes Management Company LLC since its inception in January 2023, serving as the Head of Product Management & Development and as a Portfolio Manager. He is responsible for building out the ETF platform and infrastructure in the US.

Calvin possesses a rich depth of knowledge in managing ETF strategies, spanning across commodities, options, equity, and fixed income. Prior to joining Themes Management Company LLC, Calvin was a Portfolio Manager at Cboe Vest from January 2021 to December 2022, Multi-Asset Portfolio Manager at QS Investors from May 2019 to December 2020, and Senior Portfolio Analyst at ProShares from August 2014 to May 2019.

Calvin is a CFA charterholder and a certified FRM. He earned dual Bachelor’s degrees in Accounting and Economics from Binghamton University.

Taylor Krystkowiak

VP, Investment Strategist

Taylor Krystkowiak brings over a decade of experience within asset management and investment analysis.

As the firm’s Investment Strategist, Taylor leads the publication and presentation of macroeconomic and market research, which showcase the firm’s innovative investments and how they can be positioned within portfolios.

Taylor obtained his undergraduate degree in economics and finance from Harvard University, where he graduated with highest honors and earned admission to the Phi Beta Honor Society. He is slated to obtain his master’s degree in finance from Harvard University this academic year with coursework in econometrics, investment theory, and quantitative statistics.

Prior to joining Themes ETFs in 2023, Taylor was Vice President of Product Management at Cboe Vest and an Investment Strategy Analyst at Raymond James.

Kevin Shao

US Product Management & Development

Dingxun (Kevin) Shao joined Themes Management Company LLC in July 2023 as the Vice President of Product Management & Development. In this role, he plays a crucial part in the expansion of the ETF business in the US and concurrently serves as a portfolio manager.

With 9 years of experience in the financial services sector, Kevin brings a wealth of expertise to his role. His most recent tenure was at ProShares Advisors LLC, where he began as a portfolio analyst and rose to the position of associate portfolio manager.

Kevin earned his Bachelor of Science degree with a dual major in Finance and Information Systems from the University of Maryland College Park, Robert H. Smith School of Business.