top of page

Mr. O’Connor has over 30 years of experience in global financial markets, with unique expertise in prime brokerage, inventory management, securities lending, repo, asset-based financing, and liquidity and counterparty risk management. His career spans senior leadership roles at major investment banks and asset managers across North America, Europe, and Asia.

At Aperture Investors, Mr. O’Connor served as President, following his tenure as Chief Operating Officer. In these roles, he oversaw all non-investment functions of the firm, including Trading, Operations, Finance, Risk, Legal, Compliance, and Technology, and played a key role in transforming Aperture from a traditional long-only asset manager into an alternative asset management platform.


Previously, at Och-Ziff Capital Management, Mr. O’Connor established and led the Portfolio Finance team, a new business unit designed to optimize the firm’s capital usage and financing strategies across multiple funds. Under his leadership, the team developed and implemented four low-risk portfolio finance trading strategies that collectively generated over $300 million in profit for fund investors. He was also responsible for managing and negotiating with over nine global prime brokerage relationships and for conducting due diligence on new custodial and prime brokerage counterparties.


Earlier in his career, Mr. O’Connor was a Managing Director at Goldman Sachs in London, where he served as European Head of Securities Lending and Co-Head of Prime Brokerage, managing a team of over 100 professionals and achieving average annual revenue growth of 35%. He also held senior treasury and securities finance roles in Asia at Bankers Trust, where he led the regional Securities Finance business, and at PaineWebber, where he worked as a Trader within the Securities Lending division in New York and Hong Kong.


Mr. O’Connor earned a Bachelor of Science in International Studies from the University of Scranton. He also completed a year of study abroad at Sophia University in Tokyo, focusing on general and international studies.

EXPERTISE


Prime Brokerage

Securities Lending & Repo Markets

Treasury Operations

Liquidity and Counterparty Risk Management

Inventory Management and Asset Financing


EDUCATION

University of Scranton

B.S. International/Global Studies


Sophia University

Study Abroad, General Studies

WORK HISTORY

SEDA Experts

Senior Advisor

2025-Current


Generali Investments Holdings

Corporate Development Strategic Advisor

2025-Current


Aperture Investors LLC, New York

President, Chief Operating Officer

2018-2025


Och-Ziff Capital Management, New York

Head of Business Management, Head of Portfolio Finance

2003-2018


Goldman Sachs, London

Managing Director, Global Securities Services, European Head of Securities Lending and Co-Head of Prime Brokerage

1999-2003


Bankers Trust, Hong Kong & Singapore

Principal, Global Treasury Group, Head of Securities Finance (Asia)

1994-1999


PaineWebber, New York & Hong Kong

Trader, Securities Lending

1993-1994

Prime Brokerage and Treasury Operations Expert Witness

Contact Form
Anchor 1

Contact

James O'Connor

1185 Avenue of the Americas
New York, NY 10036

+1 646-626-4555

Thanks for submitting!

bottom of page