Fundraising FoxPre-Seed–Seed
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Investment thesis
StreamingFast is primarily a blockchain data infrastructure company, best known for its Firehose and Substreams technologies that enable high-performance indexing on high-throughput chains. Launched in 2018 and now employee-owned following a core developer grant from The Graph in 2021, it integrates its products into The Graph stack to open the protocol to new data use cases. In addition to this technical work, StreamingFast incubates projects alongside its partner Diagram Ventures and invests in early-stage companies with a focus on infrastructure.
Source: firm website, verified Aug 3, 2026.
What they invest in
from 1 of 1 portfolio companiesAI & Machine Learning ×1Cybersecurity ×1Digital Health ×1EdTech ×1Enterprise Software ×1Fintech ×1Wellness & Fitness ×1
HQs:United Kingdom×1
Investments · 1 tracked
founders shown can be your intro path
Katara operates an agentic platform that connects students, agents, and universities through a shared, governed funnel to improve international student recruitment while maintaining compliance and human oversight.
AI & Machine LearningCybersecurityDigital HealthEdTechEnterprise SoftwareFintechWellness & Fitness
Co-investorsDiagramSparkle Ventures
Frequently asked questions
- What stage does StreamingFast invest at?
- StreamingFast invests at the Pre-Seed, Seed stages.
- What sectors does StreamingFast focus on?
- StreamingFast focuses on Crypto & Web3, Data & Infrastructure, Deep Tech.
From the blog
visit blog ↗Recent posts cover StreamingFast's blockchain data indexing tools, specifically Hosted Sinks for streaming on-chain data into Postgres or ClickHouse databases and Substreams updates for Solana developers such as account-change streaming and Anchor IDL integration. AI summary
Media · Podcasts & interviews
from their channelWhat are Substreams? Rob interviews Sally, a new StreamingFast Devrel
StreamingFast
Tracking Factory Smart Contracts with the Substreams CLI
StreamingFast
Substreams Tutorial - Sink events from an Ethereum smart contract to an SQL database
StreamingFast
Introducing Substreams
StreamingFast
Images
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