Jam Fund
Venture capitalLos Angeles · Pre-Seed–Series A · 1 people tracked
Find your way into Jam Fund
46 people in our graph share verified history with the Jam Fund team — schools, employers, funds. One of them is your warm intro.
Investment thesis
Solo-GP firm led by Tinder co‑founder Justin Mateen backing underestimated founders with something to prove, unusually active in Latin America and Africa and in space‑adjacent and consumer platform bets.
Source: firm website, verified Sep 1, 2026.
Team · 1 people
from public directoriesWhat they invest in
from 52 of 84 portfolio companiesConsumer ×17Fintech ×14SaaS ×13E-commerce ×12Enterprise Software ×10Healthtech ×10AI & Machine Learning ×9Digital Health ×8
HQs:United States×32India×4Brazil×2United Kingdom×2United Arab Emirates×1Canada×1
Who they back
founder profiles across 7 portfolio companiesWhere their founders studiedfrom 10 founders with education data
Harvard Business School ×2Universidade Estadual de Campinas ×2
Where their founders worked beforefrom 10 founders with career history
Banco Original ×2GoodRx ×2Lemonaid ×2
Accelerator rootsportfolio companies that came through a program
Investments · 84 tracked
founders shown can be your intro pathBy year:2025 · 12024 · 22023 · 32022 · 82021 · 62020 · 121 dated
Compass Pathways develops novel treatments for mental health conditions, with a focus on psychedelic-assisted therapies supported by rigorous clinical research.
BiotechDigital HealthHealthtechMedical DevicesMental Health
Kabir Nath(CEO)
PartnerJustin Mateen· solo GP
Co-investorsAble PartnersAisling CapitalCatalio Capital Management, LPNoeticOMX VenturesVivo Capital
Lyft is an on-demand ridesharing platform that connects passengers with drivers for various ride types, including standard rides, premium options, and other transportation services.
ConsumerEnterprise SoftwareMarketplacesMobility & TransportationSaaSSan Francisco, US
Logan Green(Co-founder & CEO)inJohn Zimmer(Co-founder & President)inDavid Risher(CEO)in
PartnerJustin Mateen· solo GP
Co-investorsAglae VenturesAllied Venture PartnersAlpha Wave GlobalAndreessen HorowitzAutotech VenturesBling Capital+41 more
Heading Health is a mental health treatment center providing team-based, in-person care combining psychiatry, therapy, and nutritional support.
HealthtechMental HealthAustin, US
Steven Levine(Executive Officer, Director, Promoter)Benjamin Goldman(Executive Officer, Director, Promoter)Simon Tankel(Executive Officer, Director, Promoter)
BoardWilliam Pescatello(Director)
Board seatJustin Mateen· per SEC Form D · $4M raise · filed Feb 2023
Co-investorsGlobal BrainInnovating CapitalRefract Ventures
Folsom, US
MANUELA SANCHEZ(CO-FOUNDER)inCAMILO SANCHEZ(CO-FOUNDER, CEO)inGREGORIO MARQUEZ(COO)TULIO EDUARDO JIMENEZ(COO)FELIPE SAMPER(Director)
Board seatJustin Mateen· per SEC Form D · $10M raise · filed Jul 2021
ABL Space Systems builds small satellite launch vehicles and a containerized launch system designed to enable orbital launches from flat pads in different locations.
Deep TechHardwareSpace TechEl Segundo, US
Harrison O'Hanley(Chief Executive Officer)Daniel Piemont(Chief Financial Officer, President and Secretary)Kevin Sagis(Chief Product Officer and Enterprise Chief Engineer)inRonald O'Hanley(Director)
BoardSomu Subramaniam(Director)inEthan Batraski(Director)in
PartnerJustin Mateen· solo GP
Co-investorsIn-Q-TelRackhouse Venture Management LpNew Science VenturesVenrockVenrock Associates
Alto Pharmacy is a full-service pharmacy that offers patients medication delivery, cost transparency, and pharmacist access.
ConsumerDigital HealthHealthtechSan Francisco, US
James Karraker(Executive Officer, Director)Mattieu Gamache-Asselin(Founder & CEO)inNichola Eliovits(Director)Nathaniel Kan(Director)Robert Spinner(Director)
PartnerJustin Mateen· solo GP
Co-investorsAvego BioScience CapitalBantam GroupCalm VenturesCSC UpshotEvolution VC PartnersFlucas Ventures+8 more
Brex provides financial services and software for companies, including corporate cards and expense management tools.
AI & Machine LearningEnterprise SoftwareFintechSaaSSan Francisco, US
Henrique Dubugras(Co-CEO)inPedro Franceschi(Co-founder & CEO)in
PartnerJustin Mateen· solo GP
Co-investorsKleiner PerkinsY CombinatorDST GlobalRibbit CapitalTiger Global Management137 Ventures+30 more
Bueno Finance offers a digital credit card accessible via UPI, targeting credit-building for underserved users in India.
FintechGurugram, IN
Saurav Gandhi(Founder)inSandeep Arora(Founder)in
Co-investorsY CombinatorGoat CapitalOlive Tree CapitalVentureSouq
This company provides an identity verification service that reads data from photographed identity documents and compares it against public records, while matching the document photo to a live image of the user's face.
CybersecurityDeveloper Tools
Raphael Melo(Founder)inRenan EsposteVitor Schirichian
PartnerJustin Mateen· solo GP
Co-investors500 GlobalMONASHEESNorte VenturesNotable Capital
Cali is an e-commerce platform serving customers in a Spanish-speaking market, offering delivery services with promotional incentives.
ConsumerE-commerceFoodTechLogistics & Supply ChainMarketplacesMonterrey, MX
Maurizio Caló Caligaris(Founder)inDavid Arrambide(Founder)in
Co-investorsCM VenturesDalus CapitalMONASHEESStreamlined VenturesY CombinatorBase10 Partners+1 more
Catalyte is a technology services firm specializing in complex software development, data engineering, and AI solutions for large enterprises and government organizations.
AI & Machine LearningDeveloper ToolsEdTechEnterprise SoftwareHR TechSaaSBaltimore, US
PartnerJustin Mateen· solo GP
Co-investorsExpon CapitalMuse CapitalCross Culture VenturesPalm Drive CapitalRise of the Rest SeedSuncoast Ventures
Colombian B2B e-commerce platform that lets neighborhood corner shops restock inventory online with next-day delivery.
Bogota
Jose Jair Bonilla(Executive Officer, Director)inOscar Sarria(Founder)in
BoardSimon Borrero(Director)
PartnerJustin Mateen· solo GP
Co-investorsAlter GlobalFEMSA VenturesFlucas VenturesFourth RealmInQlabKube VC+9 more
Click Diagnostics offers the Visby device, an at-home PCR test that delivers results in about 30 minutes for common curable STIs including chlamydia, gonorrhea, and trichomoniasis.
BiotechConsumerDigital HealthMedical DevicesMenlo Park, US
ADAM DE LA ZERDA(Director, Promoter)
BoardAJIT SINGH(Executive Officer, Director)JEROME BEHAR(Director)STEVEN ROSSTON(Director)
PartnerJustin Mateen· solo GP
Mobile app and community for sharing lifestyle experiences.
PartnerJustin Mateen· solo GP
Conta Simples is a financial platform for businesses that centralizes corporate payment management, including corporate card issuance, fund transfers, and bill payments, while providing real-time expense tracking and cost center organization.
Enterprise SoftwareFintechSaaSSão Paulo, BR
Rodrigo Tognini(Founder)inRicardo Gottschalk(Founder)inFernando Santos(Founder)in
Co-investorsABSeed Venturesbig_betsBVCCapria VenturesDOMO.VCQuartz+3 more
Curative offers an employer-sponsored health insurance plan with $0 copays, $0 deductibles, and a single monthly premium, giving members access to a nationwide provider network, telehealth, and $0 preferred prescriptions.
Digital HealthHealthtechInsurTechAustin, US
Isaac Turner(Founder)inFrederick Edward Turner(Executive Officer, Director)Tami Denise Wilson-Ciranna(Chief Financial Officer)
PartnerJustin Mateen· solo GP
Co-investorsDCVC (Data Collective)Undeterred CapitalRefactor Capital
Daily Harvest manufactures and delivers frozen prepared meals made from organic fruits and vegetables, including smoothies, oat bowls, and elixirs.
ConsumerDirect to ConsumerFoodTechNew York, US
Rachel Drori(Founder)in
PartnerJustin Mateen· solo GP
Co-investorsAble PartnersBAM VenturesCollaborative FundConnect VenturesH Venture PartnersImaginary Venture Capital+6 more
Deel is a global HR platform that enables businesses to hire, onboard, and manage employees and contractors across borders.
Enterprise SoftwareFintechFuture of WorkHR TechSaaSSan Francisco, US
Alex Bouaziz(Founder/CEO)inShuo Wang(Founder/CRO)inAlexandre Bouaziz(Executive Officer, Director, Promoter)Ofer Simon(Former Co-Founder)Philippe Bouaziz(Executive Officer, Director, Promoter)in
BoardAnish Acharya(Director)
PartnerJustin Mateen· solo GP
Co-investorsAlpha Square GroupAltaIR CapitalAmplo VenturesAndreessen HorowitzCoatue ManagementElad Gil+34 more
Digi-Prex is a subscription pharmacy service that delivers medications to customers' homes monthly, offering prices up to 15% cheaper than traditional pharmacies.
B2B MarketplacesE-commerceHealthtechWellness & FitnessHyderabad, IN
Samarth Sindhi(Founder)in
PartnerJustin Mateen· solo GP
Co-investorsGlobevestorITERATIVEOlive Tree CapitalVedanta CapitalY CombinatorKhosla Ventures+2 more
Dutchie operates an online marketplace connecting consumers with cannabis dispensaries across North America, offering real-time menus, order-ahead pickup, and delivery.
E-commerceMarketplacesRetail Tech
Zach Lipson(Founder)in
PartnerJustin Mateen· solo GP
Co-investorsCasa Verde CapitalGlynn Capital ManagementLevel One FundSinai Capital PartnersTidemarkVine Ventures+5 more
FabFitFun sells a subscription box service that delivers seasonal boxes of full-size lifestyle, beauty, and wellness products, with options to customize the box contents.
ConsumerDirect to ConsumerE-commerceBeverly Hills, US
Michael Broukhim(Executive Officer, Director)inDaniel Broukhim(Executive Officer, Director)inKatie KitchensinSam Teller
PartnerJustin Mateen· solo GP
Co-investors500 GlobalFounders Circle CapitalG SquaredKleiner PerkinsNew Enterprise Associates (NEA)Unilever Ventures+2 more
Firefly Health operates an advanced virtual care platform designed to deliver primary care services with a focus on equity, affordability, and personalized patient outcomes.
Digital HealthHealthtechInsurTech
Andy Ellner(Chief Clinical Advisor)inJeff Greenberg(Founder)inFay Rotenbergin
PartnerJustin Mateen· solo GP
Co-investorsAndreessen HorowitzF-Prime CapitalMaC Venture CapitalOak HC/FTPremji Invest
Fondue offers CashBack, a customer incentive tool that lets shoppers choose rewards (store credit or prepaid cards) after purchase to drive conversions and email/SMS opt-ins while protecting merchant margins.
E-commerceMarketing TechSaaS
Co-investorsGround Up VenturesSamsung NextStarting LineQuiet Capital
FOSSA provides audit-grade open source license compliance software that scans codebases with full-text analysis to detect licenses, enforce policies, and automatically generate attribution documents.
AI & Machine LearningCybersecurityDeveloper ToolsLegalTechSaaSSan Francisco, US
Kevin Wang(Founder)in
PartnerJustin Mateen· solo GP
Co-investorsCanvas VenturesMetaplanetModern TechnicalNorwest Venture Partners1517Bain Capital Ventures+2 more
Genies creates AI personas with visual avatars that can be customized and deployed across various applications, games, websites, and brands, functioning as AI companions, NPCs, and enterprise agents.
AI & Machine LearningConsumerGamingLos Angeles, US
Akash Nigam(Founder)Evan Rosenbaum(Founder)
PartnerJustin Mateen· solo GP
Co-investorsA.Capital VenturesBase Venture Management, Inc.Breyer CapitalCoinbase VenturesCoinFundCollab+Currency+21 more
GOAT Capital is an investment firm.
Sector Agnostic
Robin ChaninJustin Kan
Co-investorsNimble Partners
Castle APK is a free streaming application offering movies, TV shows, and web series across multiple genres for Android phones, tablets, smart TVs, and PCs.
ConsumerE-commerceMedia & EntertainmentNew Delhi, IN
Roshan Farhan(Founder & CEO)inKulapradip Bharali(Founder)in
Co-investorsY CombinatorSoma Capital
HeyDoctor offers remote primary care consultations through a mobile app and website, handling common medical needs like birth control refills, UTI treatment, and acne care without requiring insurance, video calls, or lengthy appointments.
HealthtechSan Francisco, US
Brendan Levy(Founder/CEO)inKyle Alwyn(Founder/Chief Technical Officer)in
PartnerJustin Mateen· solo GP
Co-investorsY CombinatorPear VC
Virtual healthcare service providing affordable online doctor consultations.
PartnerJustin Mateen· solo GP
Co-investorsAAF Management Ltd.MGV.VCPear VC
Home Chef is a meal kit delivery service that sends customers pre-portioned ingredients and recipes to cook home-cooked dinners, with meal kits starting at $7.99 per serving.
ConsumerDirect to ConsumerE-commerceFoodTech
PartnerJustin Mateen· solo GP
Co-investors1/1 CapitalConnexa CapitalMotivate Venture Capital
Aaron Ward(Founder)in
PartnerJustin Mateen· solo GP
Co-investorsCrosslink CapitalGen Capital
Software for SMB customer credentialing/verification.
Lincoln Ando(Founder)inRaphael Melo(Founder)in
PartnerJustin Mateen· solo GP
Co-investorsQualcomm Ventures
Washington, D.C., US
James Monsees(Executive Officer, Director)Adam Bowen(Executive Officer, Director)Vittal Kadapakkam(Chief Financial Officer)inTyler Mace(Chief Legal Officer and Corporate Secretary)inK.C. Crosthwaite(Chief Executive Officer and Director)
BoardNicholas Pritzker(Director)
PartnerJustin Mateen· solo GP
Co-investorsEvolution VC PartnersNight Owl Ventures
Kalshi operates a federally regulated futures exchange that allows users to trade contracts based on the outcomes of real-world events, creating a new market for event-based financial derivatives.
FintechNew York City, US
Luana Lopes Lara(Founder)inTarek Mansour(Co-founder & CEO)in
BoardAlfred Lin(Director)inMichael Seibel(Director)inMatt Huang(Director)in
PartnerJustin Mateen· solo GP
Co-investorsa16z cryptoAlpha PartnersAndreessen HorowitzCapitalGCoatue ManagementConductive Ventures+27 more
Growth engine for restaurants around data and customer retention.
PartnerJustin Mateen· solo GP
Co-investors4DX Ventures
Kovi provides vehicle rental services for rideshare and delivery app drivers in Brazil, with options for monthly rentals and purchase plans that include maintenance, roadside support, and flexible payment based on kilometers driven.
B2B MarketplacesFintechMobility & TransportationSão Paulo, BR
ADHEMAR MILANI NETO(Founder)in
PartnerJustin Mateen· solo GP
Co-investorsMONASHEESNorte VenturesValor Capital GroupY CombinatorGlobal Founders CapitalMAYA Capital Ventures+2 more
Krave Mart operates an online retail marketplace in Pakistan that delivers everyday consumer goods to customers with rapid delivery.
B2B MarketplacesConsumerE-commerceFoodTechLogistics & Supply ChainKarachi, PK
Kassim Shroff(Founder)inCh Haziq Ahmed(Founder)inHammad Bawany(Founder)inMohammad Ahsan Kidwai(Founder)in
Co-investorsAmaana CapitalCats.vcKube VCMSA NovoSaison CapitalY Combinator+4 more
LatAm e-commerce platform for pet products and services.
PartnerJustin Mateen· solo GP
Co-investorsBain CapitalBain Capital VenturesCanapi VenturesCentana Growth PartnersFin CapitalNyca+3 more
LendUp provides financial content and education about personal lending products, helping borrowers understand loan options, costs, and alternatives to borrowing in the consumer finance sector.
Digital HealthFintechMarketplacesSan Francisco, US
Sasha Orloff(Founder/CEO)inJacob Rosenberg(Founder/CTO)in
PartnerJustin Mateen· solo GP
Co-investorsJack AltmanQED InvestorsY CombinatorAndreessen Horowitz
Littio is a mobile app that offers multi-currency accounts in USD, EUR, and COP with international payment capabilities, including a Mastercard for spending across 200+ countries and digital asset holdings in stablecoins.
Crypto & Web3FintechBogotá, CO
Christian Knudsen(Co-founder & CEO)inLuis Huertas(Co-founder & CPO)inIvan Torroledo(Founder)in
Co-investors1confirmationalphabet angelsKoyamaki VenturesKube VCY CombinatorBlockchange Ventures+4 more
Little Spoon is a direct-to-consumer subscription service delivering organic baby and toddler food, including infant formula, purees (Babyblends), finger foods, cereal, puffs, smoothies, and kids' meals and snacks.
Advanced ManufacturingConsumerDirect to ConsumerFoodTechNew York, US
Lisa Barnett(Director)inBenjamin J. Lewis(Executive Officer, Director)Anna Sweeting(Director)Montse Suarez(Director)
BoardJohnathan Shulkin(Director)
PartnerJustin Mateen· solo GP
Co-investorsAurumKairos HQSiddhi CapitalValor Equity PartnersWinklevoss CapitalInterplay Ventures Early Stage Management Llc+1 more
Frey makes liquid laundry detergent and related laundry products that are free of harsh chemicals, marketed as luxury, non-toxic, and available in multiple signature fragrances.
ConsumerDirect to ConsumerE-commerceDetroit, US
PartnerJustin Mateen· solo GP
Co-investorsBreak Trail Ventures
Mason manufactures purpose-built IoT devices and provides a device management console for enterprise fleets across healthcare, logistics, and retail.
Enterprise SoftwareHardwareIoTLogistics & Supply ChainSaaSSeattle, US
PartnerJustin Mateen· solo GP
Co-investors11.2 CapitalCoatue ManagementNotable CapitalY Combinator
PartnerJustin Mateen· solo GP
Holding company of internet brands including Kik, Worldstar, Datpiff and Whisper.
PartnerJustin Mateen· solo GP
mPharma operates a network of pharmacies across Africa that uses technology to negotiate lower drug prices with manufacturers and manage prescription information and payments.
B2B MarketplacesDigital HealthHealthtechLogistics & Supply Chain
PartnerJustin Mateen· solo GP
Co-investors4DX VenturesBreyer CapitalOTVPeregrine VenturesThe Raba PartnershipTimon Capital+2 more
Mutti is a food company that produces tomato-based products including polpa, passata, concentrato, and pelati for cooking and food preparation.
ConsumerFoodTechParma, IT
Co-investorsVerlinvestLux Capital
PartnerJustin Mateen· solo GP
Co-investorsAtlanticBattery VenturesClear VenturesG SquaredKinnevikNew Enterprise Associates (NEA)+3 more
PayMongo is a payment processing platform serving Filipino businesses of all sizes, offering payment solutions, disbursements, lending, and subscription management.
E-commerceFintechSaaSTaguig, PH
Luis Sia(Founder)inJaime Hing III(Director)Eddie Francis Cesar Plaza(Executive Officer, Director)Alejandro Luis Sia(Director)Jojo Malolosin
BoardLawson Emanuel(Director)
PartnerJustin Mateen· solo GP
Co-investorsY CombinatorICCP Venture PartnersIgnite House of InnovationKaya FoundersBedrock CapitalGlobal Founders Capital+2 more
Proven Skincare provides personalized skincare routines for acne-prone skin based on a science-backed quiz assessment.
AI & Machine LearningConsumerDirect to ConsumerE-commerceHealthtechSan Francisco, US
Amy Yuan(Founder)inMing Zhao(Founder)inMINGSHU ZHAO(Executive Officer, Director)ZAOSHI YUAN(Executive Officer, Director)inLUKE WESTON(Executive Officer)in
BoardAKASH BEDI(Director)
PartnerJustin Mateen· solo GP
Co-investorsMindset VentureValia VenturesY Combinator
Rain Neuromorphics manufactures AI processors using neuromorphic hardware—physical neural networks with spiking neurons and memristive nanowires—that consume significantly less power than conventional processors for machine learning applications.
Advanced ManufacturingAI & Machine LearningHardwareRoboticsSan Francisco, US
Gordon Hirsch Wilson(Founder/CEO)inJuan Claudio Nino(Founder)inJack Kendall(Founder/Chief Technical Officer)in
BoardJackson Hu(Director)
PartnerJustin Mateen· solo GP
Co-investorsFlucas VenturesFundersClubY CombinatorAirbus VenturesAramco VenturesBuckley Ventures Management Company Llc+6 more
myLaurel is an in-home care platform designed to improve access to care for high-risk patients through solutions serving care teams and patients.
Digital HealthHealthtech
PartnerJustin Mateen· solo GP
Crowdfunding platform for non-accredited online real estate investment.
PartnerJustin Mateen· solo GP
Modiv Industrial invests in industrial manufacturing facilities in the United States through long-term net leases to companies that make products supporting domestic manufacturing.
FintechPropTech
PartnerJustin Mateen· solo GP
San Francisco, US
Suneel Gupta(Co-Founder & CEO)Stuart Parmenter(Director)
BoardAnn Miura-Ko(Director)in
Co-investorsDraper AssociatesFloodgatePolymorphic CapitalRyze Labs
PartnerJustin Mateen· solo GP
Sable provides bank accounts and debit and credit cards to international newcomers in the U.S. who lack Social Security numbers or established U.S. credit histories, enabling them to build credit from the start of their residency.
FintechNew York City, US
Naveen Qureshi(Founder)inJoseph Finlayson(Founder)inTowers Wilen(Founder)in
PartnerJustin Mateen· solo GP
Co-investorsAltaIR CapitalEmles Venture PartnersOutbound VenturesSequoia CapitalY CombinatorBoxGroup+1 more
PartnerJustin Mateen· solo GP
Motorcycle ride-sharing, food delivery and courier services in the Middle East.
PartnerJustin Mateen· solo GP
PartnerJustin Mateen· solo GP
Data-driven distribution network for the informal retail sector in Africa.
Claymont, US
Daniel Yu(Executive Officer, Director)Joshua Middleman(Executive Officer, Director)
PartnerJustin Mateen· solo GP
Co-investorsAmplo VenturesRogue Insight CapitalTimon Capital4DX VenturesAvenirTiger Global Management
Speech recognition software to help people learn English.
PartnerJustin Mateen· solo GP
Spotahome is an online booking platform for unfurnished and furnished apartments, rooms, and studios for medium-term stays of 30 days or longer.
MarketplacesPropTechMadrid, ES
Alejandro Artacho(Founder)inHugo Monteiro(Founder)in
PartnerJustin Mateen· solo GP
Co-investorsAcurio VenturesHOWZAT PartnersKleiner PerkinsLifeX VenturesMundi VenturesNordic Makers+8 more
StyleSeat operates a US online marketplace for independent beauty and grooming professionals.
Consumer
Melody McCloskeyin
PartnerJustin Mateen· solo GP
Co-investors500 GlobalBase Venture Management, Inc.Cleo CapitalCowboy VenturesEvolution VC PartnersFlucas Ventures+8 more
Swipe Technologies operates Float, a cross-border business payment platform, and Accounteer, a cloud-based accounting and bookkeeping service for companies and independent professionals.
FintechLondon, GB
Jesse Ahin(Founder)
Co-investorsY CombinatorKalaari CapitalMAGIC FundSoma CapitalTiger Global Management
Switchboard is a fleet management platform that helps transportation fleets manage compliance with DOT and NSC regulations through electronic logging devices (ELD) and real-time driver safety analytics.
Enterprise SoftwareLogistics & Supply ChainSaaSVancouver, CA
Michael Ip(Founder)in
PartnerJustin Mateen· solo GP
Co-investorsOyster VenturesY CombinatorMAGIC FundTribe Capital
Syncfy provides a banking and financial data API that lets software products connect to users' bank accounts and integrate financial, accounting, and fiscal data.
Data & InfrastructureFintechSaaS
Gerardo Treviño(Founder)in
Co-investorsPoint72 VenturesAusum VenturesAvalancha VenturesFJ LabsPoint72XBTO Humla Ventures
Tenderd provides AI-driven fleet and equipment management software for businesses to optimize operations and reduce environmental impact.
AI & Machine LearningConstruction TechEnergyEnterprise SoftwareIoTLogistics & Supply ChainDubai, AE
Arjun Mohan(Founder)in
PartnerJustin Mateen· solo GP
Co-investorsCathexis VenturesCOTU VenturesDynamo VenturesY CombinatorACE & CompanyRainfall Ventures
An AI-powered platform that optimizes fleet operations for businesses by tracking fuel consumption, automating compliance reporting, and providing insights to reduce costs and environmental impact across construction, logistics, transportation, and other industries.
AI & Machine LearningEnterprise SoftwareIoTLogistics & Supply ChainSaaS
PartnerJustin Mateen· solo GP
Tinder is a dating and social discovery app that connects people through profile-based matching.
ConsumerSocialWest Hollywood, US
Jonathan Badeen(Founder)inJustin Mateen(Founder)inSean Rad(Founder)in
PartnerJustin Mateen· solo GP
Co-investorsUpfront Ventures
Toko is an AI-powered English conversation tutor that provides personalized speaking practice with real-time grammar and pronunciation feedback.
AI & Machine LearningEdTechNew York City, US
Jen Liu(Founder)inErica Du(Founder)in
Co-investorsGSV VenturesPi CampusProgressionY CombinatorCommerce VenturesFatima Gobi Ventures+1 more
Tushop is an online grocery and essentials delivery service operating in Nairobi that offers express delivery within 90 minutes, standard next-day delivery, and features a marketplace for Kenyan artisanal brands and preloved goods.
ConsumerE-commerceMarketplacesNairobi, KE
Co-investors4DX VenturesBreyer CapitalFirstCheck AfricaChandaria CapitalDFS Lab
Shared electric scooters across Europe.
PartnerJustin Mateen· solo GP
Co-investorsBalderton CapitalCreandumHCVCVNV Global75 & Sunny
Volopay provides corporate cards, automated expense management, and accounting integrations for businesses.
Enterprise SoftwareFintechSaaSBengaluru, IN
Rajith Shaji(Founder)inRajesh Raikwar(Founder)in
Co-investorsAntlerVentureSouqY CombinatorAccess VenturesAccial CapitalRapyd Ventures+2 more
PartnerJustin Mateen· solo GP
Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.
Exits · 4
IPOs and acquisitions across the tracked portfolioCompass PathwaysNASDAQ: CMPSLyftNASDAQ: LYFTBrexacq. by Capital OneBueno Financeacq. by Better place
Portfolio news
latest coverage across their companiesProxy · investing.com · Sep 1, 2026

Koinz · latamrepublic.com · Aug 31, 2026
Common · finsmes.com · Aug 28, 2026

Tinder · gpfans.com · Aug 21, 2026

Voi · fwdstart.me · Aug 21, 2026
Genies · en.wikipedia.org · Aug 18, 2026
Lyft · investing.com · Aug 10, 2026
Deel · calcalistech.com · Aug 3, 2026
Frequently asked questions
- How many investments has Jam Fund made?
- Jam Fund has 24 tracked investments, 2 of which have exited via acquisition or IPO, including 1 dated in the last 24 months.
- What stage does Jam Fund invest at?
- Jam Fund invests at the Pre-Seed, Seed, Series A stages.
- What is Jam Fund's typical check size?
- Jam Fund typically writes checks of $500K – $20M.
- What sectors does Jam Fund focus on?
- Jam Fund focuses on Crypto & Web3, Sector Agnostic.
- Where is Jam Fund located?
- Jam Fund is headquartered in Los Angeles, US.
- Does Jam Fund lead rounds?
- Jam Fund typically participates in rounds rather than leading them.
- Who does Jam Fund co-invest with?
- Jam Fund most often shares deals with Y Combinator, Balderton Capital, Breyer Capital, among 46 tracked co-investors.
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