Ryan MacKay

Portfolio Manager-Fixed Income at

Loomis, Sayles & Co. LP

Consumer Services

Finance

Profile

Mr. Andrew R.
MacKay is a Portfolio Manager & Global Credit Strategist at Loomis, Sayles & Co. LP.
He is also a Co-Portfolio Manager for the global credit and global corporate strategies.
He joined Loomis Sayles in 1999 as a Research Associate and was promoted to Credit Analyst in 2001.
He was later promoted to Senior Credit Research Analyst, covering the pharmaceuticals, healthcare and health insurance sectors, and also served as the High Yield Sector Team Coordinator for the Credit Research Group.
He joined the Global Fixed Income Team in 2018 and was promoted to Co-Portfolio Manager in 2026.
Previously, he was a senior portfolio analyst at Putnam Investments.
He earned a BA from the University of New Hampshire and an MBA from Boston College.
He holds the CFA Institute’s Sustainable Investing Certificate.

Ryan MacKay active positions

Companies	Position	Start
Loomis, Sayles & Co. LP Loomis, Sayles & Co. LP Investment ManagersFinance Loomis Sayles bases their overall investment approach on the premise that their disciplined, research-based investment strategies can identify market inefficiencies that can lead to consistent outperformance of benchmarks. The firm's fixed-income research team seeks to identify attractive securities and assign ratings to various issues. Their equity investment approach is based on their belief that equity markets are inefficient. Loomis Sayles employs an intensive bottom-up investment analysis with the goal of delivering superior risk adjusted performance.	Portfolio Manager-Fixed Income	01/07/2026

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Private companies	3
Loomis, Sayles & Co. LP Loomis, Sayles & Co. LP Investment ManagersFinance Loomis Sayles bases their overall investment approach on the premise that their disciplined, research-based investment strategies can identify market inefficiencies that can lead to consistent outperformance of benchmarks. The firm's fixed-income research team seeks to identify attractive securities and assign ratings to various issues. Their equity investment approach is based on their belief that equity markets are inefficient. Loomis Sayles employs an intensive bottom-up investment analysis with the goal of delivering superior risk adjusted performance.	Finance
University of New Hampshire University of New Hampshire Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Wallace E Carroll School of Management Wallace E Carroll School of Management Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services

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