Aptigon Capital

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Established in 2016, Aptigon is a fundamental equities business. Operating on Citadel’s leading-edge risk management platform, Aptigon’s portfolio teams conduct rigorous analysis of companies to develop views of their medium-to-long term performance.

Sectors of focus: Consumer, Energy, Financial, Healthcare, Industrials, Communication, Media & Entertainment, and Technology

Approach to Investing

Aptigon’s teams seek to understand the fundamental drivers that impact the future performance of each company they cover. Portfolio management teams, a number of which bring decades in combined experience in the sectors covered, develop their own viewpoints and positions, while collaborating in research across the Aptigon complex. Each U.S. sector is covered by multiple portfolio managers, with select sector-based exposure in non-U.S. markets.

Offices: Greenwich, New York, and Houston

Talent at the Center

Aptigon takes the long view on the career development of its team members. At its launch, the business established dedicated roles and resources to manage the growth, training, and career progression of its investment professionals. Each stage of professional development is designed to foster a collaborative environment that encourages mentorship, cross-training, and learning.


Eric Felder
Head of Aptigon Capital, Fundamental Strategies and Global Credit

Eric has nearly 25 years of industry experience. Prior to joining Citadel, he served as Head of Fundamental Strategies at Magnetar Capital. Previously, he led global sales and trading across equities, fixed income, currencies and commodities as Head of Global Markets at Barclays Capital. Mr. Felder joined Barclays in 2008 following its acquisition of Lehman Brothers, where he spent 14 years in a series of increasingly senior roles, including Co-Head of Global Fixed Income. He serves on the Board of Venture of America, a charity focused on cultivating new entrepreneurs and revitalizing US cities. Mr. Felder received a bachelor’s degree from The Wharton School of the University of Pennsylvania.