Rising Sum

Kevin Stevens serves as Founder and Managing Partner and is the central figure in all investment decisions. The firm operates as a lean, founder-led vehicle without a large investment committee, which keeps decision-making fast and concentrated. There are no publicly disclosed additional general partners or formalized sector heads.

The firm sources predominantly through direct founder referrals from its portfolio company network and Stevens's prior operator relationships. This bypasses the competitive demo-day and cold-inbound channels that dominate early-stage venture. The model depends on access to tight technical subcultures in San Francisco, where serial entrepreneurs and top engineers circulate pre-seed ideas before they become widely visible.

Rising Sum operates as a boutique venture firm deploying partner capital alongside external limited partners. It does not publicly anchor to a single family wealth origin. The structure resembles the micro-fund wave of the mid-2010s — independent, sub-$150M in total deployment (Altss estimate), and built around one general partner's network and thesis.

The firm has not published a formal sector-exclusion list. However, based on its observed portfolio and the backgrounds of its network, Rising Sum does not typically invest in consumer social, hardware-intensive climate tech, life sciences, or heavily regulated industries such as defense or adult-use cannabis. The firm's diligence strengths sit in software and API-centric businesses, and it tends to stay close to that remit.

Rising Sum focuses almost exclusively on pre-seed and seed rounds, often serving as a company's first institutional capital. Check sizes tend to fall between $500,000 and $2 million, and the firm prefers to lead or co-lead rounds where Stevens's operating experience can support technical founders. The firm has not been observed participating in Series B or later-stage financings.