SignalFire
501 2nd St Suite 100, San Francisco, CA, 94107, United States
Overview
SignalFire is a venture capital firm that invests in seed-stage companies and breakout companies. The company focuses on providing data-driven insights and tailored advisory programs across various sectors, including health, fintech, and cybersecurity.
- Total investments
- 220
- Lead investments
- 82
- Investments · 12mo
- 30
- Active investors
- 14
Sector focus
- Big Data
- Finance
- Financial Services
- Venture Capital
Investment portfolio
- Flagler Health
Participated · Series B · Aug 2026
Flagler Health builds an AI-native platform that integrates directly into provider EMRs and orchestrates the full musculoskeletal patient lifecycle across triage, care management, billing, and patient communications. The platform is trained on one of the largest MSK patient data sets and is designed to run seamlessly in the background with no new logins or workflow changes for clinicians. In under three years, Flagler has scaled to thousands of providers across more than 36 states and reports metrics including an average $164,000 in additional annual revenue per provider and 87% of patients reporting improvement in pain, mood, sleep, or mobility. The product has been deployed across diverse MSK practice types and EMR environments and was developed by a founding team of physicians and healthcare operators. Headquartered in New York City, Flagler positions itself as the AI-native backbone for musculoskeletal clinics and aims to expand to every MSK practice in America.
- Horizon3.ai
Participated · Series E · Aug 2026
Horizon3.ai develops AI specifically designed to perform autonomous, authorized penetration testing across live infrastructure via its NodeZero platform. The platform is built to test live systems without shutting down operations and to scan entire infrastructures continuously rather than sampling a small percentage. The company reports having run 310,000 production security tests with zero disruptions and serves roughly 7,200–7,300 customers ranging from managed service providers to Fortune 10 enterprises. Horizon3 approached $100 million in annual recurring revenue last year and achieved 120% year-over-year growth. Its founders, who met while serving at Joint Special Operations Command, have reinvested heavily in product development—about $100 million in R&D to date. The company is expanding internationally with new offices and a growing partner network while positioning itself to address accelerating AI-driven attack threats.
- Credible Data
Participated · Seed · Jul 2026
Credible Data provides a platform that captures organization-specific business meaning from enterprise data and exposes that governed context at runtime to AI agents, APIs and analytics tools. The platform uses the open-source Malloy semantic modeling language and integrates with data warehouses such as Google BigQuery, Snowflake and Postgres. Credible adds enterprise-grade features—security, role-based access controls, governance, auditability and operational safeguards—aimed at mission-critical analytics and high-volume agent workloads. The company says the product improves consistency and trust in AI outputs by encoding how metrics are defined, how entities relate, and which rules apply across an organization. Credible recently raised a $10 million seed round to accelerate scaling of the platform. Customers such as VideoAmp report the technology enabled them to move from AI experimentation to customer-facing deployments with greater confidence.
- Cordant
Participated · Seed · Jul 2026
Cordant provides a real-time command center that ingests signals from payment rails, bank accounts, ledgers, compliance and risk systems and normalizes them into a shared event model to show how transactions moved across an operating environment. The platform does not move or hold funds, replace core systems, or require centralized data; instead it detects control gaps, coordinates exception workflows, and produces audit-grade records of activity. Cordant developed its product with 11 design partners spanning payments, digital assets and traditional banking, with Bitso and Paxos serving as both design partners and investors. The company was founded by former Rapyd leaders who built and commercialized Rapyd's global infrastructure and say Cordant grew from the operational visibility challenges they encountered. Cordant will use its seed funding to bring the system into production and to activate private beta clients, and it is positioning itself as a prerequisite layer for institutions looking to deploy AI and new rails within regulated workflows.
- Pure
Participated · Seed · Jul 2026
Pure provides a combined payments, player verification, and community management platform tailored to peer-to-peer skill-based games. The solution includes an integrated wallet and connects to a network of financial infrastructure providers such as Aeropay, Apple, Checkout.com, Gr4vy, Finix, Plaid, Pay, Radar, and Slash. Pure's offering is available through Apple’s App Store in supported U.S. markets. The company is led by CEO Jacob Bulbulia and CTO Harold Castiaux. With the newly raised seed capital, Pure plans to accelerate product development, expand engineering and compliance teams, strengthen payments infrastructure, and support growth across its U.S. markets.