Capstone Ventures, based in Menlo Park, California, was founded in 1996 and focuses on investing in companies in industries such as business-to-business, healthcare, media, semiconductor, telecommunications, and information technology. They typically invest in rounds with 3-4 participants and have been involved in funding startups like Endius, MarketTools, and Spatial. The fund has a preference for investing in companies that are 6-10 years old and operates with an average deal size of $10-50 million. Although the firm is no longer in business, they have made 16 investments and 6 exits, and have a higher than average number of lead investments compared to other companies in the same space.