SignalRank
Palo Alto-based data-driven VC using ML algorithms to systematically index Series B investments via a pro-rata-as-a-service model with seed managers.
Silent Ventures
Early-stage venture firm investing in founders building unrivaled aerospace and defense companies
Silicon Roundabout Ventures
Pre-seed/Seed venture capital fund investing in European deeptech founders
Singular
Partnering with Europe's next generation of high velocity entrepreneurs
Singularity Capital
Seed-stage VC backing disruptive tech companies across global markets, concentrating capital as early investments gain traction. Over $2.5B in private market investments.
Sinovation Ventures
Leading Chinese technology VC founded by Dr. Kai-Fu Lee with $3B AUM across ten USD and RMB funds, backing 500+ companies in AI, consumer tech, and enterprise software.
SiteGround Capital
Family office backed by SiteGround.com founders providing patient capital to deep tech, climate, and biotech startups globally.
Skeleton Key
San Francisco firm led by Harvard PhD scientist Ann Lai, backing "ScienceTech" platforms that accelerate scientific discovery from seed onward.
Sky9 Capital
Supporting disruptive technologies and outstanding innovators globally
Skybound Venture Capital
Athens-based founder-led VC investing pre-seed and seed in deep tech, infrastructure, advanced computing, and bioengineering founders.
SkyRiver Ventures
Boston-area deep tech VC backing early-stage founders in AI, robotics, cybersecurity, climate, and health across North America and Asia.
SmartCap
Estonian state-owned fund manager investing in VC funds and direct deals across venture capital, greentech, and defence sectors.
Snowpoint Ventures
Defense-focused dual-use VC backing companies at the intersection of data, deep tech, and frontier tech to advance national security and societal resilience.
SNR Ventures
Principles-driven builders backing ambitious founders across software, robotics, and biology
Socium Ventures
Atlanta-based evergreen venture fund backed by Cox Enterprises with $600M in permanent capital, investing across venture, growth, and late-stage in AI, enterprise software, and deep tech.
Solari Capital
Builds and invests in pioneering companies programming reality for an abundant tomorrow
Sony Innovation Fund
Sony Group's global CVC platform with $430M+ AUM investing in early to late-stage startups across deep tech, entertainment tech, enterprise tech, fintech, climate tech, and location-based entertainment.
SOSV
Global venture firm backing deep tech founders for human and planetary health
South Park Commons
Pre-idea to pre-seed community and fund for technical founders. Offers 6-month no-cost residency and $1M–$10M checks. Spaces in SF, NYC, and Bengaluru.
Space Frontiers Fund
Japan-focused fund investing in space startups across satellite infrastructure, remote sensing, on-orbit services, deep space, and launch access.
Space VC
US-focused pre-seed fund writing $750K–$2M checks into frontier tech founders on day zero, spanning space, defense, AI, semiconductors, autonomy, and advanced manufacturing.
Spacecadet Ventures
Pre-seed and seed VC writing $100K–$500K checks into frontier tech founders. Pairs capital with marketing and brand-building support. Co-founded by Daniel Eckler and Wiz Abdulla.
Spark Capital
Investing in products we love by creators we admire
Specialist VC
Early-stage Baltic and Finnish fund investing pre-seed to Series A in B2B SaaS, fintech, deep tech, and hardware startups.
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