Granahan Investment Management (“GIM”) is an independent, 100% employee-owned firm that was founded in 1985 by investment professionals with a passion for small capitalization equity investing. Today the firm has developed one of the industry’s deepest and most experienced teams that exclusively addresses the small cap investment needs of institutional plan sponsors and family offices.


GIM has grown to over $1.9 billion in assets under management, representing six distinct strategies covering US micro, small and SMID-cap growth equities:

Small Cap Discoveries

Diversified micro-cap/emerging growth

Small Cap Focused Growth

Concentrated secular growth

Small Cap Select

High conviction, broadly diversified across sectors

Small Cap Advantage

Dual-managed/concentrated sleeves, diversified small cap growth

Small Cap Core Growth

Multi-managed/high conviction sleeves, broadly diversified small cap growth

SMID Select Opportunities

High conviction, broadly diversified across sectors


The firm maintains its focused, dedicated and consistent approach to investing, highlighting an investment process that has been honed and proven over 30 years.