Westfield Capital Management | 6,993 followers on LinkedIn. Westfield Capital Management is an independent, employee-owned investment firm specializing in U.S. growth equity strategies across the market capitalization spectrum. Since our founding in 1989, we’ve remained dedicated to identifying underappreciated growth at reasonable valuations—a philosophy rooted in deep fundamental research and carried out through disciplined, team-based execution. Our high-conviction portfolios are built by experienced career analysts who apply sector-specific expertise and collaborative insight.