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Loomis, Sayles & Company
Loomis, Sayles & Company manages $360.7B from Boston, built as a fixed-income specialist since 1926.
Loomis, Sayles & Company
Loomis, Sayles was founded in 1926 by a group that included John A. Loomis and Alfred E. Sayles, initially as a bond-focused advisory. The firm grew through the Depression and postwar period by building a reputation in fixed-income research, eventually becoming an early institution in credit analysis. Boston remains the operational heart, with Thomas H. Loomis and other early principals setting a partnership culture that lasted decades before the firm was acquired. The investment strategy centers on active fixed-income management across government, corporate, high-yield, and municipal bonds, then widened into private credit, infrastructure debt, and real estate equity. Loomis, Sayles runs separate accounts, commingled funds, and registered vehicles across about 30 strategies. The firm operates globally from offices in Boston, London, Sydney, Tokyo, Singapore, Toronto, San Francisco, and New York. It has committed capital to infrastructure funds and direct lending opportunities, often alongside institutional co-investors. Kavanaugh runs the firm with about 637 professionals. The firm's assets under management reached $360.7B as of September 2024 (per firm disclosure). Loomis, Sayles also manages the Loomis Sayles Growth Equity and Loomis Sayles Credit strategies, widely used in institutional and retail platforms. The firm operates as a wholly-owned subsidiary of Natixis Investment Managers, itself part of BPCE Group, the second-largest French banking group. This structure provides distribution reach but maintains investment autonomy. A genuine structural differentiator is Loomis, Sayles' adoption of a 'growth through credit' model, combining deep credit research with quantitative risk systems — a hybrid approach unusual among legacy fixed-income shops. The firm's ownership under Natixis, a French bancassurance giant, allows long investment horizons without fundraising pressure, while keeping the Boston-based research culture intact — a governance setup that distinguishes it from both independent asset managers and bank-owned peers.
General information
Firm type
Asset Manager
Year founded
1926
AUM
$360.7B (per firm disclosure, September 2024)
Location
Region
North America
Country
United States
City
Boston
Corporate office
Boston, MA, United States
Additional offices
London · Sydney · Tokyo · Singapore · Toronto · San Francisco · New York
Principals
John P. Kavanaugh
CEO
David L. Giunta
President
Diane C. Lemonides
Chief Investment Officer
Sector focus
Frequently asked questions
Who runs investment decisions at Loomis, Sayles?
Chief Investment Officer Diane C. Lemonides oversees the investment process across all asset classes. CEO John Kavanaugh sets strategic direction, while each strategy has a dedicated lead portfolio manager. The firm maintains a collaborative but rigorous approval structure for credit and duration bets.
How does Loomis, Sayles source proprietary deal flow in private markets?
Loomis, Sayles sources private credit and infrastructure deals through its global research platform and long-standing relationships with sponsor firms and corporations. The firm's private credit team originates direct lending and co-investments, often alongside existing institutional clients.
Is Loomis, Sayles structured as a family office or does it operate more like a traditional asset manager?
Loomis, Sayles is a traditional institutional asset manager — not a family office. It operates as a wholly-owned subsidiary of Natixis Investment Managers, which is part of the BPCE Group. The firm serves pension funds, endowments, foundations, insurers, and other institutions globally.
Does Loomis, Sayles participate in fund commitments or only direct deals?
The firm typically manages separate accounts and commingled funds for institutions, but its private markets arm commits to direct lending and infrastructure investments. It also participates in syndicated credit deals and co-investments, often acting as a lead arranger through its private credit platform.
What investment stages does Loomis, Sayles typically target?
Loomis, Sayles focuses primarily on liquid public fixed-income markets (investment-grade and high-yield bonds) and extends into private credit, infrastructure debt, and real estate equity. The firm targets mature, cash-flow generating assets rather than early-stage venture investments.
Which sectors does Loomis, Sayles explicitly avoid?
The firm does not have a public list of excluded sectors, but its core credit focus means it predominantly lends to established, creditworthy entities across industrials, utilities, financials, and infrastructure. It does not typically invest in venture-stage technology or speculative biotech.
How is Loomis, Sayles related to Natixis and BPCE?
Loomis, Sayles is a wholly-owned subsidiary of Natixis Investment Managers, which is itself part of BPCE Group — the second-largest banking group in France by total assets (per BPCE, 2023). This structure gives Loomis, Sayles distribution access via Natixis' global network while preserving investment independence and the Boston-based research culture.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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