Knollwood Investment Advisory, LLC is a Hunt Valley, Maryland private investment office founded in 2003 that manages a public equity book alongside a direct venture portfolio. Its June 2026 Form 13F reported $1.12 billion across 270 positions, and it has made more than 50 venture investments, originally focused on internet security and later spanning semiconductors, fintech and MENA technology. Exits include Hesai Technology and Empower Semiconductor.