Sampling of Our Portfolio Companies
Castor Ventures invests in a broad range of venture-backed companies to build
diversified venture portfolios invested alongside established venture firms.

Matchwell
Matchwell
Provider of a cloud-based online clinician marketplace designed to match clinicians with healthcare facilities.
Co-Investors
11.2 Capital, Flying Point Industries

Excision Bio
Excision Bio
Developer of advanced gene editing therapeutics created to offer safe and efficacious medicines that will eradicate or disrupt viral infections.
Co-Investors
GreatPoint Ventures, Norwest Venture Partners, WRVI, ARTIS Ventures, Adjuvant Capital, Cota Capital, Olive Tree Capital

RapidSOS
RapidSOS
RapidSOS technology platform provides direct data link from millions of connected devices (smartphones, wearables, connected cars, and home IoT) to 911 and first responders.
Co-Investors
Insight Partners, Axon, Highland, Transformation Capital, Energy Impact Partners

Ocient
Ocient
Ocient offers a big data platform for rapid analysis of the world's largest datasets.
Co-Investors
Greycroft, OCA Ventures, VCapital, Valor Equity, Pritzker Group, In-Q-Tel

Ayar Labs
Ayar Labs
An in-package optical I/O company that aims to make data transmission more efficient by replacing traditional copper wires with interconnects that move data using light waves.
Co-Investors
Downing Ventures, Blue Sky Capital, Intel Capital, Playground, Founders Fund, Rising Tide, Applied Materials, Lockheed Martin, SG Innovate, TechuVentures, GlobalFoundries

Enable
Enable
Developer of an enterprise platform intended to help manage complex trading agreements with suppliers and customers.
Co-Investors
Menlo Ventures, Sierra Ventures, Rising Tide VC

BlockFi
BlockFi
BlockFi provides diversified financial services for cryptoassets.
Co-Investors
Morgan Creek, Valar Ventures

Pie Systems (Pie VAT)
Pie Systems (Pie VAT)
Developer of an end-to-end digital platform designed for the value-added tax (VAT) reclaim process.
Co-Investors
Green Visor Capital (GVC), Builders VC, Digital Garage Ventures, Bumble Ventures

Unlearn AI
Unlearn AI
A computational science company that builds machine learning platforms to create biological digital twins for the healthcare and pharmaceutical industries.
Co-Investors
8VC, DCVC, Mubadala

Hydrow
Hydrow
Hydrow has developed a connected fitness platform that initially is focused around a rower.
Co-Investors
L Catterton

Emissary
Emissary
Emissary is a human intelligence network. Their platform, the Emissary Exchange, connects enterprise sales and marketing professionals directly to a community of over 12,000 talented senior and C-level executives who have recently worked at their most imp
Co-Investors
G20 Ventures, Andy Ory, Dino Di Palma, Bruce Clark

Brio Systems
Brio Systems
A health management company focused on predicting a person’s future health by measuring the impact of lifestyle changes to "nudge" changes in behavior
Co-Investors
One Way Ventures

Rigetti
Rigetti
A full-stack quantum computing startup, focused on designing and manufacturing superconducting quantum integrated circuits and building software to enable quantum computing, as well as integrating its systems directly into existing cloud infrastructure.
Co-Investors
Bessemer Venture Partners

Teraki
Teraki
An AI & IoT company that develops and produces intelligent edge processing software initially targeted to the automotive industry.
Co-Investors
Horizons Ventures, American Family Ventures, Paladin Capital Group, Innogy Ventures

Gatik.AI
Gatik.AI
Autonomous vehicles for B2B short-haul logistics
Co-Investors
Wittington Ventures, Innovation Endeavors, Dynamo, AngelPad, Trucks VC, Fontinalis, Fuji America Corporation

Medivis
Medivis
A medical technology company that uses augmented reality and artificial intelligence to facilitate advanced medical imaging and surgical visualization.
Co-Investors
Vectr, Initialized Capital

PetPlate
PetPlate
A pet food delivery company that provides healthy, all-natural and customized meals for dogs. Based on the size and breed, PetPlate creates a meal plan according to your dog's specific profile and needs.
Co-Investors
DFE Capital Management, 301 INC (venture capital arm of General Mills)

Ozone
Ozone
A data privacy company that enables users to protect and encrypt their data while creating a secondary market for users to monetize their anonymized data by selling to trusted partners including advertisers and merchants.
Co-Investors
LAUNCH (Jason Calacanis), Season Two Ventures, Primera Capital, Ten Holdings

Jock Mkt
Jock Mkt
Jock Market allows users to trade shares based on daily fantasy sports players for cash. Users can feel the action of the game by trading real-money shares with other users in real-time.
Co-Investors
Accomplice, Will Ventures, Tim McSweeney

Openprise
Openprise
Developer of a cloud-based data automation platform intended to leverage open data and open web technology on a single platform.
Co-Investors
Bloomberg Beta, TsingYuan Ventures, Team Builder Ventures

Capella Space
Capella Space
Capella Space is creating a cost-effective SAR satellites able to see through clouds, at night, and even underground. Traditional imaging satellites use natural light optical where the range of visibility and detail are typically limited.
Co-Investors
Data Collective (DCVC), Spark Capital, AME Cloud Ventures, Cota Capital

Notable Labs
Notable Labs
Drug development platform built to rapidly identify and advance cancer therapeutics at a fraction of traditional costs
Co-Investors
B Capital Group, Lifeforce Capital, Y Combinator, First Round Capital, Builders VC, Industry Ventures

Mythical
Mythical
Next-generation game technology platform company enabling true ownership of digital assets, verifiable scarcity, and integrated secondary markets.
Co-Investors
Javelin Venture Partners, Struck Capital, Galaxy EOS VC, Fidelity (Devonshire)

Plastiq
Plastiq
E-commerce payment platform that allows users to pay with credit cards where cards are not accepted.
Co-Investors
B Capital, Kleiner Perkins, Accomplice, Bling Capital, Khosla

Deserve Series C
Deserve Series C
Deserve offers credit cards—no credit history or deposit required—using machine learning and many non-traditional data points that correlate to the user's credit worthiness
Co-Investors
Goldman Sachs PSI, Sallie Mae, Pelion, Accel, Aspect, Mission Holdings

Influence
Influence
Developer of a public, online platform designed as the first vertical professional community (VPC) to discover and connect influencers, brands, and agencies
Co-Investors
Bonfire Ventures, ACT, Next10 Ventures, SPHV

Motif Foodworks
Motif Foodworks
Motif FoodWorks is an ingredients innovation company dedicated to reshaping the landscape of food through bio-science and technology.
Co-Investors
Breakthrough Energy Ventures, General Atlantic, Viking Global Investors, Louis Dreyfus Company, Anchorage Capital Group, Fonterra Ventures, CPT Capital

Pienso
Pienso
A machine learning platform designed to facilitate, manipulate, and manage the interaction between algorithms and their data
Co-Investors
Differential Ventures

Pared
Pared
A restaurant staffing technology platform that serves as an on-demand tool for restaurant owners and operators to find and hire restaurant staff.
Co-Investors
Calibrate Ventures, Charles River Ventures, Uncork, True Ventures, Precursor Ventures

What3Words
What3Words
what3words mission is to become a global addressing standard, so everyone, everywhere has a reliable address. In doing this, what3words makes world an easier, more efficient and safer place.
Co-Investors
Daimler, Sony, Fraser McCombs, Intel Capital, SAIC Technologies

Wheels
Wheels
Wheels operates a global network of shared electric bikes that offer the convenience of micro-mobility alongside market-leading safety and stability.
Co-Investors
DBL Ventures, Crosscut Ventures, Tenaya Capital, Bullpen Capital, 3L Capital, Wavemaker Partners

True Link Financial
True Link Financial
True Link provides payment cards, investment management, and other financial services for older adults, people with disabilities, and people recovering from addiction.
Co-Investors
Khosla Ventures, QED, Nippon Life, Deciens Capital, Exor Seeds, Trusted Insight, Initialized Capital, Collaborative Fund, Radicle Emerging Impact Fund, AngelList

E25Bio
E25Bio
A medical device company developing a finger-stick blood diagnostic test designed to detect dangerous mosquito-borne diseases within minutes. The test can be used at home, pharmacy, or clinic.
Co-Investors
The Engine

FarmWise
FarmWise
Develops farming robots to facilitate autonomous cultivation and organic farming with the mission of building sustainable farming at scale.
Co-Investors
Calibrate Ventures, Playground

X-Mode
X-Mode
X-Mode’s location data platform creates a living map of consumers, helping businesses understand the places people go and providing key information to decision-makers in advertising, financial services, insurance and smart cities.
Co-Investors
Origin Ventures, Build Group

Optimus Ride
Optimus Ride
Self-driving vehicle technologies designed to enable safe, sustainable and equitable mobility services in geo-fenced environments.
Co-Investors
Neoteny, Emerson Collective, Fraser McCombs Capital

Jebbit
Jebbit
A mobile marketing solution designed to collect and activate the most relevant consumer data through innovative mobile experiences.
Co-Investors
K1

Style Genome
Style Genome
A personalized shopping service intended to help consumers in designing their homes.
Co-Investors
Two Sigma, Madrona, Peterson

Populus
Populus
Analytics software provider of mobility data, including car sharing, ride hailing, and bike/scooter sharing, to key stakeholders managing urban transportation systems.
Co-Investors
Precursor Ventures

Rhone
Rhone
Men's high performance active-wear and brand.
Co-Investors
L Catterton, M3 Ventures, Equinox

WorldCover
WorldCover
WorldCover provides crop insurance to smallholder farmers in Africa and around the world.
Co-Investors
MS&AD Ventures

OpenGov
OpenGov
OpenGov develops software for public sector budgeting, reporting, and open data access, while providing an easy to use visualization tool to encourage citizen engagement and enhance transparency.
Co-Investors
Emerson Collective, Andreessen Horowitz, 8VC, Thrive Capital

CumulusDS
CumulusDS
CumulusDS is an Internet of Things platform designed to manage end-to-end workflow. The company's platform collects and structures data from digitally-enabled tools to verify the quality and duration of a task.
Co-Investors
Shell Ventures

Alpaca
Alpaca
Alpaca helps renters and landlords through the process by using AI to better match tenants and rental businesses.
Co-Investors
Lightspeed Venture Partners, Correlation Ventures, Canaan Partners

Vyrill
Vyrill
Developer of an artificial intelligence tool designed to focus on video insights, licensing, and content marketing.
Co-Investors
Long Venture Capital, Panache Venture Capital

Sorcero
Sorcero
Sorcero is artificial intelligence company that empowers employees to access their company’s knowledge more efficiently and effectively.
Co-Investors
Pearl Investment Partners, Sparkfund Executive Leadership Syndicate

Clear Labs
Clear Labs
Clear Labs enables stronger food safety and quality programs by providing comprehensive, genomics-based testing and cutting-edge data science.
Co-Investors
Menlo Ventures

Getaway
Getaway
Getaway develops and operates a growing portfolio of "tiny houses", located within a short drive of major cities offering its customers a way to completely disconnect while enjoying short vacations in nature.
Co-Investors
L Catterton

Honor
Honor
Honor is a software and tech-enabled services company that utilizes AI to improve in-home senior care. The company's mission is to provide high-quality non-medical home care for the increasing market of older adults.
Co-Investors
Andreessen Horowitz, Naspers, Thrive Capital, 8VC

Circle
Circle
Circle is a cryptocurrency-focused finance company intended to utilize blockchain technology to allow users and customers to send, receive and invest in cryptocurrency assets around the world.
Co-Investors
General Catalyst, Accel, IDG, Oak, Breyer Funds, Goldman Sachs

Sana.IO
Sana.IO
Sanai.io is creating neuro-modulation technology for managing sleep and chronic pain.
Co-Investors
Founders Fund

RealSelf
RealSelf
RealSelf is the leading marketplace for the medical aesthetics market. It is a platform for people to learn about cosmetic procedures, share experiences, and connect with providers.
Co-Investors
Elephant, The Capital Group Companies

Algorand
Algorand
Algorand is a next generation blockchain technology centered around a novel, more scalable, faster, and more efficient consensus protocol based on Proof-of stake (PoS).
Co-Investors
Union Square Ventures, Pillar, Foundation Capital, Wing VC

OpenInvest
OpenInvest
OpenInvest is dedicated to using technology to bring honesty and transparency to financial services, while making socially responsible investing easy and more accessible.
Co-Investors
QED, Andreessen Horowitz, Y Combinator

Tamr
Tamr
Tamr is an enterprise software company designed to tackle large-scale data management challenges in organizations with extreme data volume and variety.
Co-Investors
NEA, GV

CommonBond
CommonBond
A student loan platform, refinancing student loans for young working adults, providing in-school loans for college and graduate students, and offering student loan benefit programs to employers.
Co-Investors
Fifth Third Capital

CNEX Labs
CNEX Labs
CNEX Labs is a data storage solutions company that manufactures high-performance semiconductors and software for cloud, hyper-scale and enterprise data centers.
Co-Investors
Dell Ventures

Dataminr
Dataminr
Dataminr is the world's leading real-time information discovery platform, leveraging AI/machine learning in detecting and disseminating critical events for businesses and governments.
Co-Investors
IVP, Venrock, Valor Equity Partners, Fidelity, Goldman Sachs

Vesper Technologies
Vesper Technologies
Vesper is the leader in piezoelectric micro-electro-mechanical systems (MEMS) microphones for consumer applications. The company's superior microphone design aims to bring studio quality acoustics into handheld and IoT devices.
Co-Investors
American Family Ventures, Sands Capital Ventures, Accomplice

Verity Studios
Verity Studios
Verity’s technology enables the safe use of large numbers of drones indoors and above people for verticals including entertainment and industry. The company's Synthetic Swarm drone show combines its proprietary software with its new LucieTM micro drones.
Co-Investors
Fontinalis Partners, Sony
Unity Biotechnology
Unity Biotechnology
Unity Biotechnology is a developer of small molecule medicines that potentially halt, slow, or reverse age-associated diseases, while restoring human health.
Co-Investors
Fidelity, ARCH Ventures, Venrock, Founders Fund

GrubMarket
GrubMarket
GrubMarket is a leading online farm-to-table eCommerce platform for wholesome, fresh, organic produce, and foods conveniently delivered to end customers at affordable prices.
Co-Investors
GGV Capital, Global Founders Capital, Y Combinator, Sound Ventures, Battery Ventures, AME Cloud Ventures

Agile Stacks
Agile Stacks
Agile Stacks provides automated cloud development and deployment services intended to reinvent how enterprises implement clouds.
Co-Investors
Canaan Partners

Horsepower Technologies
Horsepower Technologies
Animal healthcare and biotech company intended to combat equine lameness.
Co-Investors
Accomplice, MassVentures

Relayr
Relayr
Relayr has developed an industrial IoT middleware platform designed to facilitate interoperability through industrial-grade platforms.
Co-Investors
HSB, Kleiner Perkins Caufield & Byers, Munich Venture Partners, Munich RE

Lumiata
Lumiata
Lumiata is a healthcare-focused artificial intelligence platform company optimizing healthcare delivery to individuals, supporting prediction of patient-specific clinical trajectories, and driving population healthcare management.
Co-Investors
Khosla Ventures

Prenav
Prenav
Developer of precision-guided drones designed to help in infrastructure inspection.
Co-Investors
Crosslink Capital, Pear Ventures, NTT Docomo Ventures, WI Harper Group

Teal Drones
Teal Drones
Drones designed to improve augmented reality, security, and inspections.
Co-Investors
Highland Capital, Pelion, NEA, IDO Investments

Sentenai
Sentenai
Sentenai has created a data cloud infrastructure to deliver automated data engineering for data science and machine learning applications.
Co-Investors
Mass Ave Capital, Founder Collective, Flybridge Capital, Hyperplane

Consumer Physics
Consumer Physics
Sells SCIO, first sensor that hovers over and determines quality and content of foods and substances on iPhones for consumers and industry.
Co-Investors
Khosla, Third Point, ML Capital, Grove Partners

Trocafone
Trocafone
Developer of an e-commerce marketplace designed to buy and sell used electronics.
Co-Investors
Sallfort, 500 Startups, Lumia Capital, Quasar Ventures, Barn Investments, FundersClub, Rocketship.vc

ScanTrust
ScanTrust
Non-forgeable digital fingerprint to identify and locate products with a smartphone anywhere in the supply chain.
Co-Investors
Credit Suisse, Helvetica Capital, Innogy Ventures, SOSV Ventures

Celularity
Celularity
Celularity has developed cellular therapies and biomaterials from the placenta to amplify the body’s ability to fight disease, heal, and regenerate itself.
Co-Investors
United Therapeutics, Sorrento Therapeutics, Celgene, Section 32, and Genting Group

Manus Bio
Manus Bio
Manus is a biotech/biosynthetics company that sustainably manufactures natural chemicals and plant oils via fermentation.
Co-Investors
415 Investments, NXT Ventures

C2Sense
C2Sense
Developer of a gas sensing technology designed to transform smell into real-time data that can be accessed remotely.
Co-Investors
MIT's The Engine Fund, Boston Millennia Partners Fund, Thiel Foundation

Respiratory Motion
Respiratory Motion
Revolutionary non-invasive direct respiratory monitoring, like an EKG for the lungs.
Co-Investors
Jean Hammond/Golden Seeds, Easton Capital, Mehta Ventures, Boston-area Angels group

Humatics
Humatics
Humatics has developed breakthrough radar-based technology that enables ultra-low-cost millimeter scale positioning, thereby creating a new category of micro-location.
Co-Investors
Fontinalis Partners, Airbus Ventures, Lockheed Martin Ventures, Ray Stata

Smartvid.io
Smartvid.io
Smart AI-based identification of safety and machine-trained incidents at construction sites.
Co-Investors
Autodesk, Borealis Ventures

Replenish
Replenish
The first self-cleaning appliance that instantly prepares healthy smoothies and snacks.
Co-Investors
Tandem Capital, Kainos Capital

Domo
Domo
Domo develops intuitive software for enterprise users, that connects employees with disparate data that resides in silos across their organization, to improve business results.
Co-Investors
Andreessen Horowitz, Benchmark Capital, SV Angel, IVP, Jeff Bezos' Bezos Expeditions, Greylock Partners, TPG Growth, BlackRock

Akselos
Akselos
Next-generation engineering simulations for offshore oil & gas, and power system industries, making digital twins a reality.
Co-Investors
EuroUS Ventures; FortiCap; Shell Ventures; Innogy Ventures; David Brown, Swiss Angel Investor of the Year (2016)

Ready4
Ready4
Machine learning-based, gamified testing smartphone apps.
Co-Investors
Atlas, Accomplice, Square Peg Ventures

DataXu
DataXu
dataxu is a next-gen marketing and analytics platform that enables marketers to better understand and engage consumers in a programmatic world.
Co-Investors
Accomplice, Flybridge Capital, Menlo Ventures, Thomvest Ventures, Sky

EverQuote
EverQuote
Online auto insurance marketplace
Co-Investors
Link Ventures, Savano Capital Partners, Second Alpha Partners, Stratim Capital

Kinsa
Kinsa
Kinsa is creating the world's first real-time map of human health.
Co-Investors
KPCB, GSR, FirstMark, Founder Collective