Finding Large Opportunity in Midcaps

MFS

Stephanie Lo, Erich Shigley, Derek Beane

Research

6 Pages

MFS argues midcaps sit in a compelling “sweet spot,” with broader sector diversification and less analyst coverage creating fertile ground for stock selection. They add that reasonable valuations and any reversal in today’s extreme market concentration could provide a tailwind for midcap performance.

Date Published: October 2025

Key Takeaways

Structural premium: Midcaps have delivered persistent long-run advantages versus large caps.
Better diversification: Broader sector mix and lower single-name dominance reduce concentration risk.
Alpha potential: Thinner analyst coverage and higher dispersion enhance opportunities for stock pickers.
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