Susquehanna International Group Executive and Leadership Team

May, 2026

Leadership Overview

Susquehanna International Group has 7 executives leading key functions including strategy, operations, and compliance.

Driven by quantitative applications, Susquehanna International Group provides liquidity and execution capabilities across equity, fixed income, and commodity products, impacting global securities markets and institutional clients.

Leadership Roles at Susquehanna International Group

  • Chief Executive Officer - Jeffrey Yass
  • Chief Executive Officer & Managing Partner - Hyeog Yoo
  • Management Committee Member & Chief Operating Officer - Ted Bryce
  • Sig Brokerage, Lp President & Chief Compliance Officer - Michael Ronan
  • President - S. Pnlwn
  • President - Stephen Furlong
  • President - Todd Abrahall
  • Jeffrey Yass - Chief Executive Officer

    Jeffrey Yass, the Chief Executive Officer at Susquehanna International Group, directs the firm's overarching strategy and global operations. Yass guides the company's quantitative approach to market-making, ensuring robust liquidity provision and execution capabilities across diverse financial products. This leadership role involves setting the strategic direction for affiliated entities in investment banking, research, institutional sales and trading, private equity, and venture capital. By focusing on technological innovation and data-driven decision-making, Jeffrey Yass drives the firm's competitive edge in major securities markets and strengthens relationships with institutional clients worldwide. The Chief Executive Officer's mandate includes fostering a culture of analytical rigor and disciplined risk management, essential for navigating complex financial landscapes and achieving sustained growth across all SIG's business units.

    Hyeog Yoo - Chief Executive Officer & Managing Partner

    Hyeog Yoo, the Chief Executive Officer & Managing Partner at Susquehanna International Group, spearheads the firm's strategic vision and operational execution. Yoo's leadership ensures the seamless integration of SIG's diverse business lines, including its core quantitative trading operations, investment banking, research, institutional sales and trading, private equity, and venture capital arms. Overseeing global market engagement, Hyeog Yoo drives the firm's commitment to providing deep liquidity and superior execution services to institutional clients across North America, Europe, Asia, and Australia. The Chief Executive Officer & Managing Partner's responsibilities encompass fostering innovation in quantitative applications and maintaining the firm's competitive positioning in volatile securities markets. Yoo's strategic oversight is critical for expanding market reach and reinforcing SIG's reputation as a leading global financial firm.

    Ted Bryce - Management Committee Member & Chief Operating Officer

    Ted Bryce, the Management Committee Member & Chief Operating Officer at Susquehanna International Group, orchestrates the firm's extensive operational framework. Bryce ensures the efficient functioning of SIG's global infrastructure, supporting its liquidity provision and execution capabilities across equity, fixed income, and commodity products. This critical role involves optimizing internal processes and resource allocation to enhance the performance of affiliated entities in investment banking, research, institutional sales and trading, private equity, and venture capital. Ted Bryce's focus on operational excellence drives efficiency and scalability, enabling SIG to effectively service major securities markets and institutional clients worldwide. The Chief Operating Officer's oversight extends to managing the firm's presence in Asia, Australia, Europe, and North America, ensuring consistent service delivery and adherence to rigorous operational standards.

    Michael Ronan - Sig Brokerage, Lp President & Chief Compliance Officer

    Michael Ronan, the Sig Brokerage, Lp President & Chief Compliance Officer at Susquehanna International Group, directs regulatory adherence and operational integrity for the brokerage arm. Ronan ensures that all brokerage activities align with stringent compliance standards and internal policies, safeguarding the firm's reputation and client trust. This dual role involves overseeing the brokerage's strategic initiatives while maintaining a vigilant focus on risk management and regulatory requirements across North America and other operating regions. Michael Ronan's leadership is essential for navigating the complex regulatory landscape inherent in global financial markets, particularly concerning equity, fixed income, and commodity products. The Chief Compliance Officer's mandate includes developing and implementing robust compliance programs that support SIG's broader mission of providing liquidity and execution services to institutional clients.
    Michael Ronan

    S. Pnlwn - President

    S. Pnlwn, the President at Susquehanna International Group, drives strategic initiatives and operational oversight across key business segments. Pnlwn's leadership focuses on enhancing the firm's market presence and service offerings, particularly in areas such as investment banking and institutional sales and trading. This role involves fostering collaboration among different divisions to ensure a cohesive approach to client engagement and market participation. S. Pnlwn is instrumental in guiding the expansion of SIG's capabilities, leveraging quantitative applications to maintain its competitive edge in providing liquidity and execution services. The President's responsibilities include overseeing regional operations and ensuring that all activities align with the company's core mission of serving major securities markets and institutional clients worldwide.

    Stephen Furlong - President

    Stephen Furlong, the President at Susquehanna International Group, directs significant operational and strategic functions within the firm. Furlong's purview includes overseeing critical aspects of SIG's business, such as its private equity and venture capital divisions, driving investment strategies and portfolio growth. This leadership position involves ensuring that these specialized entities operate with maximum efficiency and achieve their investment objectives. Stephen Furlong plays a key role in identifying new market opportunities and fostering innovation across the company's diverse financial product offerings. The President's focus on strategic development and operational synergy supports SIG's overarching goal of providing robust liquidity and execution capabilities to institutional clients globally.

    Todd Abrahall - President

    Todd Abrahall, the President at Susquehanna International Group, leads critical initiatives focused on expanding the firm's market reach and enhancing its service offerings. Abrahall's responsibilities encompass driving growth in areas such as institutional sales and trading, ensuring SIG maintains its strong position in global securities markets. This leadership role involves cultivating strategic partnerships and optimizing client engagement strategies to deliver superior execution capabilities. Todd Abrahall is dedicated to leveraging SIG's quantitative applications to provide deep liquidity across a broad range of equity, fixed income, and commodity products. The President's strategic direction supports the firm's commitment to serving institutional clients worldwide with unparalleled expertise and efficiency.

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    Frequently Asked Questions Regarding Susquehanna International Group Top Executives and Leadership Team

    Who leads Susquehanna International Group?
    Susquehanna International Group is led by Jeffrey Yass (Chief Executive Officer), along with executives such as Hyeog Yoo (Chief Executive Officer & Managing Partner) and Ted Bryce (Management Committee Member & Chief Operating Officer).
    Who is part of Susquehanna International Group’s executive team?
    The executive team of Susquehanna International Group includes leaders such as Jeffrey Yass (Chief Executive Officer), Hyeog Yoo (Chief Executive Officer & Managing Partner), Ted Bryce (Management Committee Member & Chief Operating Officer) and other senior executives.
    How many executives does Susquehanna International Group have?
    Susquehanna International Group has 7 executives leading key business areas.
    What roles are included in Susquehanna International Group’s leadership team?
    The leadership team of Susquehanna International Group includes roles such as Chief Executive Officer, Chief Executive Officer & Managing Partner, Management Committee Member & Chief Operating Officer, Sig Brokerage, Lp President & Chief Compliance Officer, President.