And one to grow on? Duncan-Hurst Capital Management specializes in growth equity investments. The company administers about a half dozen funds, primarily for institutional investors. A minimum investment is around $5 million for institutional investors and around $25,000 for customers investing in Duncan-Hurst's Aggressive Growth Fund. Its investments consist mostly of small- and mid-cap companies. Chairman William "Beau" Duncan founded the company in 1990 and continues to control it. Duncan-Hurst Capital Management has more than $620 million of assets under management.