Citadel Securities Executive and Leadership Team

September, 2026

Leadership Overview

Citadel Securities has 10 executives leading key functions including strategy, administration, operations, and financial management.

By leveraging advanced analytics and proprietary technology, Citadel Securities delivers essential liquidity to global financial institutions and government agencies while maintaining a commitment to solving complex market challenges through rigorous research and innovation.

Leadership Roles at Citadel Securities

  • Chief Executive Officer - Peng Zhao
  • Chief Administrative Officer & Chief Executive Officer, Office of - Lindsey Tsukiyama
  • Vice President, Office of the Chief Executive Officer - Lindsey Parr
  • Office of the Chief Executive Officer - Rachel Whelan
  • Chief Financial Officer - Carlos Bonilla
  • Chief Operating Officer - Zoe Zeng
  • Senior Vice President, Chief Operating Officer Team - Sylvia Wang
  • Managing Director, Global Options Chief Operating Officer - Zakary Kassing
  • Global Chief Operating Officer of the Citadel Securities Client Franchise and Managing Director - Christian Dungl
  • Chief Operating Officer, Institutional Equities - Nicole Jeddis
  • Peng Zhao - Chief Executive Officer

    Peng Zhao, the Chief Executive Officer at Citadel Securities, directs the overarching strategic vision and long-term growth trajectory of the firm. Overseeing the integration of advanced analytics and high-frequency trading technology, the Chief Executive Officer ensures the organization maintains a competitive edge across global capital markets. This leadership role involves constant collaboration with the Board to refine market-making capabilities and expand liquidity services for central banks and sovereign wealth funds. By prioritizing the development of proprietary research, Peng Zhao drives the firm toward solving complex financial problems that remain inaccessible to traditional competitors. The Chief Executive Officer monitors macro-level market shifts to ensure the firm remains agile in volatile environments. Through this focus on technological superiority and operational excellence, the firm secures its position as a leader in the financial services sector, consistently delivering value to institutional clients worldwide.
    Peng Zhao

    Lindsey Tsukiyama - Chief Administrative Officer & Chief Executive Officer, Office of

    Lindsey Tsukiyama, the Chief Administrative Officer & Chief Executive Officer, Office of at Citadel Securities, manages the internal infrastructure and administrative frameworks that support the firm's high-performance culture. Overseeing the alignment of corporate resources with strategic objectives, the Chief Administrative Officer & Chief Executive Officer, Office of ensures that internal processes facilitate the rapid deployment of trading technology. This role involves coordinating cross-departmental initiatives to streamline operations and enhance organizational efficiency. By optimizing administrative workflows, Lindsey Tsukiyama directly supports the firm's ability to provide critical liquidity to financial institutions and insurers. The Chief Administrative Officer & Chief Executive Officer, Office of maintains rigorous standards for operational governance, ensuring that all internal functions remain compliant with global regulatory requirements. Through this focus on structural integrity, the firm sustains its capacity to solve complex market problems while scaling operations across diverse international markets.

    Lindsey Parr - Vice President, Office of the Chief Executive Officer

    Lindsey Parr, the Vice President, Office of the Chief Executive Officer at Citadel Securities, coordinates strategic communications and operational priorities within the executive leadership team. Overseeing the flow of information between the Office of the Chief Executive Officer and various business units, the Vice President, Office of the Chief Executive Officer ensures that firm-wide initiatives align with the core mission of providing liquidity to global markets. This role involves managing complex projects that require deep integration of research and technology. By facilitating collaboration across departments, Lindsey Parr enables the firm to address unique challenges faced by government agencies and financial institutions. The Vice President, Office of the Chief Executive Officer monitors the execution of key strategic goals, ensuring that all operational activities support the firm's market-making expertise. Through this focus on organizational alignment, the firm maintains its reputation for solving impossible problems in the capital markets.

    Rachel Whelan - Office of the Chief Executive Officer

    Rachel Whelan, the Office of the Chief Executive Officer at Citadel Securities, supports the executive leadership in executing the firm's strategic agenda and operational mandates. Overseeing the implementation of high-level initiatives, the Office of the Chief Executive Officer ensures that the firm's advanced trading technology and research capabilities remain focused on delivering liquidity to institutional clients. This role involves analyzing market trends and internal performance metrics to drive efficiency across the organization. By managing critical workflows, Rachel Whelan enables the firm to maintain its competitive advantage in the global financial landscape. The Office of the Chief Executive Officer collaborates with various teams to ensure that the firm's mission of solving complex financial problems remains at the forefront of all operations. Through this focus on strategic execution, the firm continues to provide essential services to corporations, insurers, and sovereign wealth funds, reinforcing its position as a next-generation capital markets firm.

    Carlos Bonilla - Chief Financial Officer

    Carlos Bonilla, the Chief Financial Officer at Citadel Securities, manages the firm's financial health, capital allocation, and fiscal strategy. Overseeing the financial reporting and treasury functions, the Chief Financial Officer ensures that the firm maintains the liquidity necessary to support its market-making activities for financial institutions and sovereign wealth funds. This role involves analyzing the financial impact of new trading technologies and research initiatives to ensure long-term profitability. By maintaining rigorous financial controls, Carlos Bonilla supports the firm's ability to navigate complex market environments and regulatory landscapes. The Chief Financial Officer collaborates with the executive team to align fiscal resources with the firm's strategic goals of innovation and market expansion. Through this focus on financial stability and strategic investment, the firm continues to provide critical liquidity to the global economy, solving complex problems that others consider impossible while maintaining a strong balance sheet.

    Zoe Zeng - Chief Operating Officer

    Zoe Zeng, the Chief Operating Officer at Citadel Securities, directs the firm's internal operational scaling and infrastructure development. Overseeing the deployment of robust technology platforms, the Chief Operating Officer ensures that the firm's trading systems operate with maximum efficiency and reliability. This role involves managing the intersection of research and execution to support the firm's liquidity provision services for global financial institutions. By optimizing internal processes, Zoe Zeng enables the firm to handle high-volume trading demands while maintaining strict risk management protocols. The Chief Operating Officer works closely with the technology and research teams to ensure that the firm's infrastructure remains at the forefront of the industry. Through this focus on operational excellence, the firm successfully solves complex market problems and delivers consistent value to its diverse client base, including central banks and government agencies, across all major international markets.

    Sylvia Wang - Senior Vice President, Chief Operating Officer Team

    Sylvia Wang, the Senior Vice President, Chief Operating Officer Team at Citadel Securities, manages the execution of operational projects that enhance the firm's trading capabilities. Overseeing the coordination between the Chief Operating Officer and various technical departments, the Senior Vice President, Chief Operating Officer Team ensures that the firm's research and technology are effectively integrated into daily operations. This role involves identifying opportunities for process improvement to support the firm's liquidity provision services. By streamlining internal workflows, Sylvia Wang enables the firm to respond rapidly to market changes and client needs. The Senior Vice President, Chief Operating Officer Team monitors the performance of key operational metrics, ensuring that all activities align with the firm's mission of solving complex financial challenges. Through this focus on operational efficiency, the firm maintains its status as a next-generation capital markets firm, providing essential services to financial institutions and government agencies worldwide.

    Zakary Kassing - Managing Director, Global Options Chief Operating Officer

    Zakary Kassing, the Managing Director, Global Options Chief Operating Officer at Citadel Securities, directs the operational strategy for the firm's global options business. Overseeing the technology and research integration specific to options trading, the Managing Director, Global Options Chief Operating Officer ensures that the firm provides superior liquidity to financial institutions and insurers. This role involves managing the complexities of global market operations to maintain high performance and reliability. By optimizing the options trading infrastructure, Zakary Kassing enables the firm to solve intricate market problems and capture opportunities in diverse geographic regions. The Managing Director, Global Options Chief Operating Officer collaborates with other leaders to ensure that the options business remains aligned with the firm's broader mission of technological innovation. Through this focus on operational scale and precision, the firm continues to deliver critical liquidity and value to its clients in the global capital markets.

    Christian Dungl - Global Chief Operating Officer of the Citadel Securities Client Franchise and Managing Director

    Christian Dungl, the Global Chief Operating Officer of the Citadel Securities Client Franchise and Managing Director at Citadel Securities, manages the operational framework for the firm's client-facing services. Overseeing the delivery of liquidity to financial institutions and corporations, the Global Chief Operating Officer of the Citadel Securities Client Franchise and Managing Director ensures that client needs are met with advanced technology and research. This role involves coordinating global operations to provide seamless service across different time zones and markets. By optimizing the client franchise infrastructure, Christian Dungl enables the firm to solve complex problems for its partners and maintain strong institutional relationships. The Global Chief Operating Officer of the Citadel Securities Client Franchise and Managing Director monitors service quality and operational efficiency to support the firm's growth. Through this focus on client-centric operations, the firm reinforces its position as a trusted partner for central banks and sovereign wealth funds.

    Nicole Jeddis - Chief Operating Officer, Institutional Equities

    Nicole Jeddis, the Chief Operating Officer, Institutional Equities at Citadel Securities, directs the operational strategy for the firm's institutional equities division. Overseeing the technology and research deployment for equity trading, the Chief Operating Officer, Institutional Equities ensures that the firm provides critical liquidity to financial institutions and insurers. This role involves managing the operational complexities of equity markets to maintain high performance and reliability. By optimizing the equities trading infrastructure, Nicole Jeddis enables the firm to solve intricate market problems and capture opportunities in global markets. The Chief Operating Officer, Institutional Equities collaborates with other leaders to ensure that the equities business remains aligned with the firm's broader mission of technological innovation. Through this focus on operational scale and precision, the firm continues to deliver critical liquidity and value to its clients in the global capital markets, solving problems that others consider impossible.

    Explore Leadership Teams in Finance

    Frequently Asked Questions Regarding Citadel Securities Top Executives and Leadership Team

    Who leads Citadel Securities?
    Citadel Securities is led by Peng Zhao (Chief Executive Officer), along with executives such as Lindsey Tsukiyama (Chief Administrative Officer & Chief Executive Officer, Office of) and Lindsey Parr (Vice President, Office of the Chief Executive Officer).
    Who is part of Citadel Securities’s executive team?
    The executive team of Citadel Securities includes leaders such as Peng Zhao (Chief Executive Officer), Lindsey Tsukiyama (Chief Administrative Officer & Chief Executive Officer, Office of), Lindsey Parr (Vice President, Office of the Chief Executive Officer) and other senior executives.
    How many executives does Citadel Securities have?
    Citadel Securities has 10 executives leading key business areas.
    What roles are included in Citadel Securities’s leadership team?
    The leadership team of Citadel Securities includes roles such as Chief Executive Officer, Chief Administrative Officer & Chief Executive Officer, Office of, Vice President, Office of the Chief Executive Officer, Office of the Chief Executive Officer, Chief Financial Officer.