Positive Sum Capital
Venture capitalGreenwich · Seed–Series B · 17 people tracked
Also known as Positive Sum Capital AA · Positive Sum Capital QP
Investment thesis
Positive Sum backs founders who are pursuing their life's work, partnering with entrepreneurs building ambitious, category-defining companies. The firm's public portfolio spans a broad set of technology sectors including AI, energy, defense/aerospace, developer tools, fintech, and enterprise software, suggesting a generalist approach oriented around exceptional founders rather than a single vertical.
Source: firm website, verified Aug 3, 2026.
Team · 17 people
from the firm's website & public directories
What they invest in
from 6 of 26 portfolio companiesAI & Machine Learning ×4Consumer ×2Data & Infrastructure ×2Hardware ×2Cleantech ×1Deep Tech ×1Developer Tools ×1Energy ×1
HQs:United States×3
Investments · 26 tracked
founders shown can be your intro pathBending Spoons acquires established digital products—including Vimeo, Evernote, WeTransfer, Meetup, and Brightcove—to own and operate them long-term, developing new features and AI capabilities across them.
AI & Machine LearningConsumerSaaSMilan (Mi)
Davide Giorgio Andrea Scarpazza(Executive Director and Chief Financial Officer)Valerio Volpe(Executive Officer)Luca Ferrari(Executive Officer, Director)Francesco Mancone(Chief Technology Officer)Claudio Berretti(Director)Luca Querella(Director)
Base Power provides residential battery systems and retail electric provider services to customers in Texas.
CleantechEnergyHardwareTexas, US
Zach Dell(Founder & CEO)Justin Lopas(Founder)in
Eight Sleep manufactures a smart bed system called the Pod that provides personalized temperature control, elevation adjustment, and integrated sound for sleep optimization.
ConsumerHardwareIoTWellness & FitnessNew York City, US
Matteo Franceschetti(Founder/CEO)inMassimo Andreasi Bassi(Founder/CTO)inAlexandra Zatarain(Founder/CMO)inNG YiPin(Director)
Physical Intelligence develops general-purpose AI models that enable robots to perform a wide range of manipulation and mobility tasks through foundation models trained on multi-robot, multi-task data.
AI & Machine LearningDeep TechRobotics
Prefect builds intelligent workflow orchestration infrastructure that manages mission-critical automated workflows for teams balancing flexibility with reliability.
AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise Software
Jeremiah Lowin(Executive Officer, Director)
Mark Groden(Founder)
Tegus provided expert call transcripts and financial models for investment research; the service is now integrated into AlphaSense, an AI platform for analyzing expert interviews, financial data, broker research, and market intelligence to support investment decision-making.
AI & Machine LearningData & InfrastructureFintech<UNKNOWN>, US
Thomas Elnick(Executive Officer, Director)Michael Elnick(Director)Alex Wolf(Director)
Woodford
Tracey Portia Bianci-Maisuria(Executive Officer, Director, Promoter)Joao Francisco Vaz Lanceiro Abiul Menano(Executive Officer, Director, Promoter)Nuno Filipe Matamouros Resende Frade Campos(Executive Officer, Director, Promoter)
Frequently asked questions
- What stage does Positive Sum Capital invest at?
- Positive Sum Capital invests at the Seed, Series A, Series B stages.
- What is Positive Sum Capital's typical check size?
- Positive Sum Capital typically writes checks of $5M.
- What sectors does Positive Sum Capital focus on?
- Positive Sum Capital focuses on Sector Agnostic.
- Where is Positive Sum Capital located?
- Positive Sum Capital is headquartered in Greenwich, US.
Co-investors · 24
Anti Fund backs technical founders early and pairs technical judgment with distribution and attention to help breakthrough companies define their categories.
Valor Equity Partners is a private investment firm focused on operational growth, investing in technology and technology-enabled companies that innovate and disrupt existing industries.
Todd and Rahul's Angel Fund is an early-stage investment vehicle run by founders Todd Goldberg and Rahul Vohra, who write $300k-$500k checks into early-stage startups and help with product/market fit, go-to-market, and future fundraising.
Vibe Capital (Vibecap) is a venture firm investing in AI, Web3, and deep tech startups, aiming to back founders building more equitable, transparent, and accessible structures.
Trust Fund is an early-stage venture capital fund focused on consumer businesses that improve work and personal lives across sectors including healthcare, fintech, CPG, marketplaces, logistics, and sustainability.
Greylock Partners is a venture capital firm that backs founders at the earliest stages, often as their first investor before a product exists.
Paradigm is a frontier technology investment firm that builds and invests in early-stage companies across crypto, AI, robotics, and other emerging technology areas.
Banana Capital is Turner Novak's early-stage venture capital firm, run as a one-person operation investing up to $250k as a first or lead investor.
Hustle Fund is an early-stage venture capital firm that invests quickly in startups, offering capital along with educational programs and mentorship. It also runs an angel investing community that lets members invest alongside the fund.
Unusual Ventures is an early-stage venture capital firm that backs enterprise founders from initial insight through market leadership, providing a proprietary playbook for finding product-market fit.
MS&AD Ventures is the corporate venture arm backed by MS&AD Insurance Group Holdings, with a team experienced in both investing and operating.
▶12 more co-investors
Standard CapitalAIX VenturesBrainchild HoldingsShrug CapitalBasementAthletico VenturesLudlow VenturesAtreides ManagementProton EnterprisesWilshire Lane CapitalThe Family FundYork IE
Firms observed investing alongside Positive Sum Capital, from public investor directories. Shared companies are the overlap with Positive Sum Capital's recorded portfolio.
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