/Investor DB

Builder Capital — Full Portfolio

13 tracked investments · listed companies and verified rows first

Helikahelika.ioin𝕏✓ verified

Helika builds Helika Evolve, a brand-safe AI character platform that lets IP owners deploy interactive characters trained on their approved content to engage fans in real time across Discord, web, social, and community channels.

AI & Machine LearningGamingMarketing Tech

Anton(Founder & CEO)Ilya(CPO)

Co-investorsDiagramPantera CapitalBig Brain HoldingsFenbushi CapitalSparkle VenturesFermion

Aethir Computeaethir.comin𝕏

Aethir operates a distributed cloud compute platform providing enterprise-grade GPU resources for AI model training, fine-tuning, inference, and low-latency cloud gaming.

AI & Machine LearningCloud ComputingCrypto & Web3

Mark Rydon(Founder)inDaniel Wang(Founder)

Co-investorsAndromeda CapitalAnimoca BrandsBeamBig Brain HoldingsCVP NoLimitGTS Ventures+14 more

Airstackairstack.xyzin

Airstack offers an AI-based quant engineer tool that codes trading strategies and identifies issues ("leaks") in them, aimed at quantitative trading users.

AI & Machine LearningData & InfrastructureFintechMiami Beach, US

Jason Goldberg(Executive Officer, Director)in

Co-investorsBlack DragonDelta BlockchainFenbushi CapitalLecca VenturesRed Beard VenturesResolute Ventures+16 more

Antimetalantimetal.comin

Antimetal builds an autonomous system that operates production infrastructure by continuously monitoring, diagnosing, and fixing issues across software systems.

AI & Machine LearningCloud ComputingDeveloper ToolsNew York City, US

Shreyas Iyer(Founder)inMatthew Parkhurst(Founder)

Co-investorsChapter OneHawk Hill VenturesIDEO CoLab VenturesBuckley Ventures Management Company LlcChapter One VenturesFramework Ventures+2 more

Astek Diagnosticsastekdx.cominSeed

Astek Diagnostics develops a diagnostic platform for rapid and accurate detection of urinary tract infections and related conditions in clinical specimens.

AI & Machine LearningBiotechDigital HealthHealthtechMedical DevicesBaltimore, US

Mustafa Al-Adhami(Founder)inCourtney Cavin(Cofounder)in

Co-investorsMaryland TEDCOTEDCOY CombinatorAJGAYANA Capital LLCHarvard Management Company+4 more

Coinflowcoinflow.cashin𝕏Feb 2023

Coinflow provides global payment processing infrastructure enabling businesses to accept payments, settle funds, and expand internationally with instant settlement and fraud protection.

B2B MarketplacesFintechChicago, US

Daniel Lev(Founder & CEO)inBenjamin Meeder(Founder)in

Co-investorsCoinbase VenturesDigital Currency GroupDraper DragonFactionPantera CapitalReciprocal Ventures+4 more

Ethoswalletethoswallet.xyzJan 2023Defunct

Ethos built a Sui blockchain wallet and developer tooling for discovering and using decentralized applications.

Co-investorsgumi IncWWVenturesboldstart venturesgumi Cryptos Capital (gCC)Meltem DemirorsMysten Labs+1 more

Feather Roboticsfeather.devSep 2026 · $7.6M

Feather builds deployment-grade robotic hardware and an open SDK (Python and ROS2) that lets automation and AI companies deploy their trained models onto physical robots without doing their own hardware R&D.

AI & Machine LearningHardwareRobotics

Co-investorsGeometryGradient VenturesLongHash Ventures

Grass Opengrass.io𝕏

Grass is a peer-to-peer network that monetizes unused residential internet bandwidth by connecting users with institutions that need data connectivity, compensating participants with points and tokens.

Crypto & Web3Data & Infrastructure

Andrej R(Founder)inAndrej Radonjic(Founder)

Co-investorsCollab+CurrencyMulticoin CapitalPolychain Capital

Neurophosneurophos.cominNov 2025

Neurophos develops photonics and metamaterials-based compute hardware, combining optical systems with analog and digital silicon.

AI & Machine LearningDeep TechHardwareSemiconductorsAustin, US

Patrick Bowen(Executive Officer, Director)inAndrew Traverso(Founder)inHod Finkelstein(Executive Officer)inPreston Woo(Executive Officer)in

BoardChristopher Alliegro(Director)Nathan Kundtz(Director)

Co-investorsAlumni VenturesBeyond Earth VenturesBosch VenturesDnx VenturesDuke Capital PartnersGaingels+10 more

Octane Securityoctane.securityin𝕏

Octane builds an AI-native security analysis tool that continuously reasons about code to find novel vulnerabilities across functions, files, and execution paths.

AI & Machine LearningCybersecurityDeveloper Tools

Co-investorsArchetypeDuke Capital Partners

Octraoctra.org𝕏

Octra provides encrypted computation infrastructure for blockchain, AI, and applications.

AI & Machine LearningCrypto & Web3Data & Infrastructure

Co-investorsBig Brain HoldingsFinality Capital Partners

Prodia Labsprodia.comin𝕏

Prodia provides APIs for high-quality image and video generation using generative AI, delivered at scale without requiring GPU provisioning or infrastructure management.

AI & Machine LearningCloud ComputingDeveloper ToolsSaaS

Shawn Wilkinson(Founder)inMonty Anderson(CEO, CTO)in

Co-investorsEv3 Ventures LlcSymbolic CapitalTRGCWeb3com VenturesIndex VenturesOKX Ventures

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.