Aptigon Capital



Established in 2016, Aptigon Capital is a fundamental equities business at Citadel operating on the firm’s leading-edge technology and risk management platform. The portfolio management teams, which have decades of investment experience, combine deep industry knowledge and a rigorous investment process to formulate a differentiated view of the performance of companies.

Approach to Investing

Aptigon employs fundamental research and financial analysis through a sector-focused approach. Each team, which generally consists of a portfolio manager, one or more senior analysts, and one or more junior analysts, works independently to generate investment ideas and construct robust portfolios.

Industry Focus: Consumer, Energy, Financials, Healthcare, Industrials, Communications, Media and Entertainment, and Technology

Talent at the Center

Aptigon operates on a highly collaborative team-based business model. We strive to create an environment where the best minds in the industry come to find unparalleled career opportunities. We invest in our team members by providing unique opportunities that foster personal development and growth. Teams leverage Citadel’s best-in-class resources and infrastructure, collaborating with a broad range of specialists and experts to drive meaningful results.

Locations: New York, Greenwich and Houston


Eric Felder
Head of Aptigon Capital 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.