Northern Trust (Nasdaq: NTRS) has been appointed by Aristotle Capital Management, LLC to provide middle office outsourcing services for institutional portfolios, a partnership that already covers approximately $40 billion in assets under management as of June 30, 2025.The mandate involves Northern Trust’s Investment Operations Outsourcing (IOO) delivered through its integrated middle office platform. Aristotle, a majority employee-owned firm based in Los Angeles, employs a bottom-up, fundamental investment approach across its international, global, and U.S. equity portfolios.Ryan Burns, Head of Global Fund Services, Americas at Northern Trust, highlighted the growing complexity in middle office operations. “The complexity of the middle office is increasing, and asset managers need advanced expertise and technology to expand their operations,” Burns stated. He added that Northern Trust aims to address this with a “seamless IOO service experience” and “cutting-edge technology” that supports diverse investment types and strategies through a client-centric approach.Kim St. Hilaire, Principal, Managing Director Operations & Trading at Aristotle, explained the firm’s need for a sophisticated solution due to its organizational structure and technology infrastructure supporting multiple affiliates. St. Hilaire noted, “Northern Trust distinguished itself with its robust global operating model, unparalleled data accessibility, and flexible, sophisticated tools tailored to dynamic enterprise needs.” She emphasized that this partnership ensures continued high standards of excellence for their global clients and advances strategic objectives.Northern Trust’s Global Fund Services offers a comprehensive suite of Asset Servicing solutions, including fund administration, global custody, investment operations outsourcing, and data solutions for complex investment strategies and asset classes. Its IOO capability supports over 85 clients, managing approximately $2.63 trillion in assets under administration as of June 30, 2025. The IOO platform is designed to aggregate data, analyze risk and performance, value assets, and provide client reporting and fee billing, offering a consistent experience for managers to balance risk, quality, and cost.Aristotle Capital Management and its affiliates provide equity and fixed income management solutions to a global client base including pension plans, financial institutions, and high-net-worth individuals, reporting $100.8 billion in assets under advisement as of June 30, 2025. Northern Trust Corporation, founded in Chicago in 1889, is a global provider of wealth management, asset servicing, asset management, and banking services. As of June 30, 2025, Northern Trust had assets under custody/administration of US$18.1 trillion and assets under management of US$1.7 trillion, operating with a global presence across 24 U.S. states and 22 international locations.