3 Undervalued Midcaps Ready to Pop This is where we find mature companies that are well-established in their respective markets but still have a lot of room to grow. Here we highlight three undervalued mid cap companies that have a good chance of graduating to large-cap status. Free Book Preview Money-Smart Solopreneur This book gives you the essential guide for easy-to-follow tips and strategies to create more financial success. Email This story originally appeared on MarketBeat U.S. mid-cap stocks are off to a strong start in 2021. The S&P 400 mid cap index is up 17% year-to-date compared to 11% for its large cap counterpart the S&P 500.