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SignalFire is an AI-native venture capital firm founded in 2013 and headquartered in San Francisco. The firm has established itself as a leader in the venture capital space by leveraging technology and data analytics to enhance investment strategies. With approximately $3 billion in assets under management (AUM), SignalFire has raised over $1 billion in its latest funding round in April 2025, marking the largest fundraising effort in its history. The firm operates with a unique structure, resembling a technology company, and employs an in-house engineering team that developed Beacon AI, a proprietary machine learning platform that tracks 650 million individuals and 80 million organizations. This innovative approach allows SignalFire to provide its portfolio companies with unparalleled insights and resources.
SignalFire's team consists of 85 professionals, including 20 partners, 6 venture partners, and 10 principals, all dedicated to supporting startups across various stages of growth. The firm has a diverse LP base, including significant commitments from institutions like CalPERS, which invested $100 million. This strong backing enables SignalFire to maintain a robust investment strategy focused on early-stage companies, particularly in the applied AI sector.
SignalFire's investment focus is sharply defined around applied AI, deliberately steering clear of investments in AI foundation model builders. The firm targets companies that possess defensible business models and data moats, particularly in sectors such as healthcare, cybersecurity, infrastructure, consumer products, and enterprise SaaS. SignalFire invests across various stages, from pre-seed to Series B, with the capability to concentrate investments of up to $100 million in standout companies. The firm typically prefers check sizes ranging from $1 million to $100 million, with a sweet spot between $5 million and $15 million.
By focusing on applied AI, SignalFire aims to capitalize on what it sees as the defining opportunity in the tech landscape. The firm actively seeks out startups that demonstrate innovative applications of AI technology, ensuring that they are well-positioned to thrive in their respective markets. This strategic focus allows SignalFire to leverage its proprietary Beacon AI platform effectively, providing portfolio companies with critical talent intelligence and market trend insights.
SignalFire boasts an impressive portfolio of 302 investments, including 10 unicorns, showcasing its successful investment strategy in the venture capital landscape. Notable companies in its portfolio include Grammarly, Grow Therapy, EvenUp, Stampli, Horizon3.ai, ClassDojo, and Branch. The firm has been particularly active in recent months, with significant investments such as Solace Health's $130 million Series C round in February 2026 and Clutch Security's $20 million Series A round in January 2025. These investments reflect SignalFire's commitment to supporting innovative startups that are poised for growth and success in their respective industries.
SignalFire's ability to identify and nurture high-potential companies has resulted in a diverse portfolio that spans various sectors, further solidifying its reputation as a leading venture capital firm. The firm's focus on applied AI and its unique resources, including the Beacon AI platform, enable it to provide exceptional support to its portfolio companies, enhancing their chances of achieving significant milestones and successful exits.
Chris Farmer — Founder and CEO, Chris leads SignalFire with a vision to integrate technology into venture capital, focusing on applied AI investments.
To pitch SignalFire, founders should prepare a detailed presentation that highlights their business model and market potential. While specific submission guidelines are not provided, a well-structured pitch is essential for consideration. Founders are encouraged to reach out through their official website for more information on the application process.
SignalFire operates various programs to support its portfolio companies, including 100 skill-building workshops each year and an Executive-in-Residence (XIR) program designed for experienced operators to provide mentorship and guidance. These initiatives are aimed at enhancing the capabilities of founders and their teams, ensuring they have the necessary tools to succeed in a competitive market.
In April 2025, SignalFire successfully raised over $1 billion, pushing its assets under management to approximately $3 billion. This fundraising effort marks a significant milestone for the firm, reflecting its strong position in the venture capital landscape. Recently, SignalFire led a $20 million Series A investment in Clutch Security in January 2025 and participated in Solace Health's $130 million Series C round in February 2026, demonstrating its active engagement in the applied AI sector.
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