CO-CHIEF INVESTMENT OFFICER

Kris Sidial is a seasoned derivatives trader with a rich history in the volatility space.

Kris began his career under the tutelage of the legendary CBOE trader, Robert Kanter, laying a solid foundation in volatility trading. Kris then further honed his skills as a proprietary trader at both Xanthus Capital and Chimera Securities.

Before joining Ambrus, Kris was part of the exotic derivatives trading team at BMO capital markets.

With a background of having studied computer science at the University of Pennsylvania, Kris believes in a balanced approach to trading that combines quantitative and discretionary factors.

Kris dedicates significant effort to philanthropic causes, notably in supporting Christian programs and initiatives aimed at assisting underprivileged children. He is also an active Brazilian Jiu Jitsu competitor and an IBJJF Gold Medalist.

CO-CHIEF INVESTMENT OFFICER

William has been an independent trader for more than a decade. Over this time, he has used his knowledge and experience to develop several highly profitable strategies.

These include a strategy based on signals that indicate institutional hedging, a strategy exploiting changes to the VIX term structure, and a strategy that exploits intraday price dynamics in equities with unusual trading volumes.

William’s trading and risk management philosophy is to exploit short-term market dislocations and temporary supply / demand imbalances, and to cap downside risk.

Chief Operating Officer

Michael previously served as Vice President at a $1+ billion AUM venture capital firm, leading technology and infrastructure initiatives supporting portfolio management and risk analytics. He brings deep experience building scalable data systems for both systematic and discretionary investment processes.

As Chief Operating Officer of The Ambrus Group, Michael leads the firm’s technology and operational strategy, focusing on data-driven systems that enhance execution, decision-making, and growth.

Michael holds a BS in Finance from Northeastern University.

PARTNER

Sal has over fifteen years of experience in using statistical techniques to analyze trading opportunities.

In prior roles, Sal served as Head of Quantitative Credit and Fundamental Credit Technology at Citadel and before that, as Quantitative Developer in Equity Statistical Arbitrage.

Prior to Citadel, Sal worked at Morgan Stanley in New York, where he helped launch a profitable spread options trading strategy and a structured commodities trading strategy.

Sal holds an MBA from the NYU Stern School of Business.

HEAD OF QUANTITATIVE RESEARCH

Adi is a systematic trader with over a decade of experience building and deploying data-driven trading strategies across U.S. equities and equity options.

He previously served as a desk supervisor and systematic trader at Citadel Securities for eight years, where he led and traded high-frequency and mid-frequency systematic strategies. Prior to Citadel, he worked as a quantitative trader at Walleye Capital, focused on developing mid-frequency volatility arbitrage and equity statistical arbitrage strategies.

Adi holds an MS in Data Science from the University of California, Berkeley, with deep expertise in machine learning, market microstructure, and large-scale trading systems.

ASSOCIATE TRADER

Matthew got his start with the firm during the summer of 2022.

He graduated from Brown University in 2024 with a B.S. in Applied Mathematics and Computer Science.

During his time at Brown, Matthew was also the assistant captain of the Division I Brown hockey team.