Positive Sum Capital
Venture capitalActively deployingGreenwich · Seed–Series B · 19 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 · 19 people
from the firm's website & curated & public directories
What they invest in
from 9 of 26 portfolio companiesAI & Machine Learning ×6Deep Tech ×3Consumer ×2Data & Infrastructure ×2Enterprise Software ×2Fintech ×2Hardware ×2Cleantech ×1
HQs:United States×7Italy×1
Who they back
founder profiles across 9 portfolio companiesFounding team size:solo founder×22 founders×43 founders×24+ founders×1
Where their founders studiedfrom 16 founders with education data
DTU - Technical University of Denmark ×4Università degli Studi di Padova ×3Harvard University ×2
Where their founders worked beforefrom 16 founders with career history
DeepMind ×2DTU Fotonik ×2Evertale ×2
Investments · 26 tracked
founders shown can be your intro path
Bending 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), IT
Luca Ferrari(Executive Officer, Director)inLuca Querella(Director)inMatteo Danieli(Director)inFrancesco Patarnello(Vice President and Executive Director)inTomasz Greber(Co-Founder)inDavide Giorgio Andrea Scarpazza(Executive Director and Chief Financial Officer)
Co-investorsEndeavor CatalystHighland EuropeKearny JacksonNimble PartnersSocium Ventures
Base Power provides residential battery systems and retail electric provider services to customers in Texas.
CleantechEnergyHardwareTexas, US
Zach Dell(CEO)inJustin Lopas(Co-founder)in
Co-investors137 VenturesAndreessen HorowitzAvenir Growth CapitalCapitalGCongruent VenturesContrary+20 more
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)in
BoardNG YiPin(Director)
Co-investorsAltra VentureAntiAzure Capital PartnersBlue Scorpion InvestmentsComcast VenturesCota Capital+25 more
Etched designs and manufactures AI inference chips and rack-scale systems optimized for frontier models, using co-designed hardware, software, and manufacturing processes to deliver best-in-class throughput, latency, and power efficiency.
AI & Machine LearningDeep TechSemiconductorsSan Jose, US
Gavin Uberti(Co-Founder & CEO)inRobert Wachen(Co-Founder & President)Chris Zhu(Co-Founder)in
Co-investorsAntiAZURO CAPITAL VENTURESBain Capital VenturesBeyond CapitalConversion CapitalCopper Sky Capital+17 more
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
Karol Hausman(Founder)inQuan Vuong(Founder)in
Co-investorsKhosla VenturesCapitalGLux CapitalRedpoint VenturesSequoia CapitalThrive Capital+12 more
Prefect builds intelligent workflow orchestration infrastructure that manages mission-critical automated workflows for teams balancing flexibility with reliability.
AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareWashington, US
Jeremiah Lowin(Executive Officer, Director)in
BoardPatrick W. OShaughnessy(Director)
Co-investorsBessemer Venture PartnersGreen Meadow VenturesRachel Zoe VenturesTiger Global Management
Rogo offers a secure AI platform for financial firms that automates workflows across research, analysis, and reporting, using custom-trained language models built for finance.
AI & Machine LearningEnterprise SoftwareFintechNew York, US
Gabriel Stengel(Founder)inJohn WillettTumas RackaitisTumas R.(Founder)in
Co-investorsBoxGroupKhosla VenturesKleiner PerkinsMantis CapitalSequoia CapitalThrive Capital
Skyryse develops SkyOS, a flight-control operating system that simplifies aircraft operation through automated maneuvers, emergency management, and optionally piloted or autonomous flight.
Deep TechDefense TechMobility & TransportationEl Segundo, US
Mark Groden(Founder & CEO)inStephen Koo(Executive Officer, Director)Blake Bilstad(Executive Officer)
BoardLior Susan(Director)Will Summerlin(Director)Ethan Batraski(Director)
Co-investorsCantos VenturesCity LightDas & Co.Embedded VenturesFlucas VenturesFontinalis Partners+18 more
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 & InfrastructureFintechChicago, US
Thomas Elnick(Executive Officer, Director)Michael Elnick(Director)Alex Wolf(Director)
Co-investorsAdvance Venture PartnersVanedge Capital Limited Partnership
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)
Exits · 1
IPOs and acquisitions across the tracked portfolioBending SpoonsNASDAQ: BSP
Portfolio news
latest coverage across their companiesEtched · reuters.com · Aug 18, 2026
Bending Spoons · blog.pragmaticengineer.com · Aug 5, 2026
Base Power · toflow.ai · Aug 4, 2026
Skyryse · techcrunch.com · Jul 5, 2026
Rogo · bizjournals.com · May 1, 2026
Physical Intelligence (π) · roboticscenter.ai · Apr 1, 2026
Eight Sleep · news.crunchbase.com · Mar 4, 2026
Frequently asked questions
- How many investments has Positive Sum Capital made?
- Positive Sum Capital has 26 tracked investments, 1 of which have exited via acquisition or IPO, including 1 dated in the last 24 months.
- 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.
- Who does Positive Sum Capital co-invest with?
- Positive Sum Capital most often shares deals with Anti, 137 Ventures, Avenir Growth Capital, among 98 tracked co-investors.
Co-investors · 24
Anti Fund is an early-stage-to-growth venture firm that backs technical, anti-consensus founders and pairs technical judgment with distribution and attention to help companies define new market 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 is a $10M venture fund investing in Web3, AI, and Deep Science startups at the pre-seed and seed stage.
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.
Atreides Management, LP is an investment firm that applies a crossover strategy, investing in technology and consumer companies across both public and private markets with a long-term perspective.
Greylock Partners is an early-stage venture capital firm that partners with founders building companies from inception. Its partners make only one or two new investments per year to focus deeply on each partnership.
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 a venture capital firm that backs enterprise and infrastructure founders from initial insight through market leadership, providing a proprietary playbook for finding product-market fit.
▶12 more co-investors
MS&AD VenturesStandard CapitalAIX VenturesBrainchild HoldingsShrug CapitalBasementAthletico VenturesLudlow VenturesProton 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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