Ken Winston is Senior Vice President and Portfolio Manager at Pioneer Investments, which was formerly known as Amundi US, and was acquired by Victory Capital in 2025. He is responsible for managing mid-cap growth strategies.

Ken joined Pioneer Investments from Hartford Investment Management Company, where he was Senior Vice President with portfolio management and analyst responsibilities for small-and mid-cap growth portfolios. Previously, he was a Partner and Portfolio Manager at Lee Munder Capital Group, where he managed small- and mid-cap growth portfolios. Earlier in his career, he was a Senior Analyst and Principal for Needham & Company, a sell-side investment banking and brokerage firm, where he covered information technology and media companies.

He holds a B.S. from Babson College and an M.B.A. from Harvard Business School.