Steel Atlas
NYC-based early-stage fund backing software and hardware companies reshaping the industrial economy.
Stellar Ventures
Woman-led early-stage VC investing in space technology companies and mission-driven entrepreneurs across the space economy.
Sterling Road
San Francisco solo-GP fund led by Ash Rust, coaching pre-seed B2B founders for months before investing, taking them from idea to $1M revenue.
Stone Mountain Ventures
Solo-GP healthcare VC backing pre-seed and seed founders in care delivery, behavioral health, and healthcare AI infrastructure.
Stony Lonesome Group
VC/PE firm backing dual-use and veteran-led tech companies
Storm Ventures
Early-stage B2B enterprise VC backing software startups in cybersecurity, infrastructure, and AI across North America, Europe, and Asia.
Story Ventures
Invests in the building blocks of automated systems, betting early on sensory data, processing, and machine intelligence.
StoryHouse Ventures
Early-stage VC investing exclusively in founders from the Claremont Colleges ecosystem. Backs pre-seed and seed companies across sectors with community and network support.
Stout Street Capital
Writes the first institutional check for deep-tech founders across Colorado and the Rocky Mountains, betting on a multi-decade frontier-tech convergence.
Stratus Ventures
Solo-GP fund backing pre-seed and seed founders with an "unfair edge" — lived experience, distribution, or insight others lack.
Streamlined Ventures
Solo-GP seed fund led by Ullas Naik investing in visionary founders across software, AI, fintech, logistics, and deep tech. Leads or co-leads rounds across most verticals.
Stripes
Global growth investor backing product-led companies across consumer, enterprise software, fintech, and digital health with a focus on helping exceptional products scale.
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Bi-continental seed fund where ~75% of 270+ portfolio companies are Korean or Korean-diaspora founders, built on a genuine LA-Seoul dual office.
Struck Capital
LA-based seed and pre-seed fund and venture studio backing B2B and B2B2C founders. Leads rounds with hands-on operational support including hiring, PR, and customer intros.
Suffolk Technologies
Corporate VC arm of Suffolk Construction backing early-stage startups in construction, real estate, and infrastructure tech.
SUM Ventures
Early-stage VC investing from pre-seed to seed+ in fintech, proptech, IoT, AI, medtech, and cleantech startups across the US.
Summit Partners
Global growth-equity firm since 1984 pairing proprietary sourcing with hands-on operational support for tech, healthcare and growth-sector leaders.
Sunflower Capital
Pre-seed and seed firm led by Sequoia alum Liu Jiang, backing the earliest-stage founders building enterprise infrastructure, AI, developer tools, and defense hardware.
Supermoon Capital
The world's first VC fund exclusively backing early-stage startups in sleep and circadian health, across healthcare, consumer, and biotech.
Superorganism
Pre-seed and seed VC dedicated to biodiversity startups
Surface Ventures
Pre-seed and seed fund focused on B2B software at low valuations
Susa Ventures
Seed-stage fund helping founders build billion-dollar companies
Susquehanna Sustainable Investments
Climate-focused early-stage fund backed by Susquehanna International Group, investing in mitigation, adaptation, and removal startups
Sutter Hill Ventures
Venture firm partnering with founders to build enduring companies
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