Mid-cap stocks offer quality and significant upside, says Keith, a PM at Parnassus Investments. Keith shares 4 mid-cap stocks dominating their industries and on track to be tomorrow's mega-caps. The Magnificent Seven have incredibly high market caps now, but they were small- and mid-sized companies before they were market behemoths. That's why Lori Keith, director of research and portfolio manager at Parnassus Investments, is such a big fan of mid-cap stocks. AdvertisementBelow, she shares 4 mid-cap companies with strong long-term growth prospects and the potential to become market dominants.

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Persons: Lori Keith, there's, Keith, —, Warren Buffett, Keith's Organizations: Parnassus Investments, Service, Nvidia, Fund