Investors / United States / SignalFire
SignalFire
Venture capital · San Francisco, CA, United States · North America
SignalFire is a venture capital firm that invests in early-stage startups and supports them with an in-house AI platform called Beacon and portfolio programs. It was founded in 2013 and has scaled to roughly $3B in assets under management since launching its first fund in 2015.
Invests inAI & Machine LearningHealthcare & Biotech
In its own wordsaienterprise softwarevertical saashealthtechcybersecurityfintech
Your fit with SignalFire
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsSignalFire lists 135 checked portfolio companies on its own site and is named in 37 funding rounds, 7 of them as lead. Its most frequent entry is Seed, 36% of the companies with a known first round. Its largest themes are AI & Machine Learning (27%), Healthcare & Biotech (15%) and Enterprise Software (14%). 96% of its companies are based in United States. It invests most often alongside Y Combinator, Accel and Andreessen Horowitz.
Counts come from funding rounds that name SignalFire, complete from mid-2025: earlier rounds appear only when they were reported later. Round amounts and full round histories are on Fundup AI.
Round figures show recent activity, not SignalFire's whole history. Rounds on record name 35 companies; its own site lists 135. Funding rounds are complete from mid-2025, so counts and the yearly trend undercount a firm that invested before then. The portfolio, themes and places come from its own site and are not affected.
Entry stage
share of companies by the stage of its first roundShow as a table
| Value | |
|---|---|
| Pre-seed | 0% |
| Seed | 36% |
| Series A | 33% |
| Series B | 9% |
| Growth | 21% |
Activity by year
rounds it joined, last 10 yearsShow as a table
| Total | Rounds it led | |
|---|---|---|
| '17 | 0 | 0 |
| '18 | 0 | 0 |
| '19 | 1 | 0 |
| '20 | 0 | 0 |
| '21 | 0 | 0 |
| '22 | 0 | 0 |
| '23 | 1 | 0 |
| '24 | 0 | 0 |
| '25 | 9 | 1 |
| '26 | 26 | 6 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 97th | 136 companies |
| Recent activity | 99th | 27 rounds in 12 months |
| Early stage | 65th | 36% of entries at pre-seed or seed |
| Evidence | 89th | 18% of companies confirmed by a round |
| Sector focus | 43th | 27% in its largest sector |
| Reach | 70th | 4 countries |
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| AI & Machine Learning | 27% | 18% |
| Healthcare & Biotech | 15% | 15% |
| Enterprise Software | 14% | 8% |
| Fintech | 11% | 12% |
| Cybersecurity | 7% | 4% |
| Legal & Compliance | 4% | 2% |
| E-commerce & Marketplaces | 3% | 6% |
| Space & Defense | 3% | 3% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| Y Combinator | 15 |
| Accel | 8 |
| Andreessen Horowitz | 6 |
| General Catalyst | 6 |
| Lightspeed Venture Partners | 6 |
| IVP | 5 |
| NEA | 5 |
| Bain Capital Ventures | 4 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers13399%
- No longer answers00%
- Points to another company21%
- Parked or sold domain00%
A site that stops answering three checks in a row is counted as no longer answering; that is not proof of closure. A site that points to another company is often an acquisition.
Co-investor network
who it backs companies with, and who they back togetherCompare SignalFire head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Recent portfolio activity
when companies last raised with SignalFire| Date | Company | Stage |
|---|---|---|
| 22 Oct 2026 | Series A | |
| 7 Oct 2026 | Seed | |
| 25 Sept 2026 | Series B Led | |
| 31 Aug 2026 | Seed Led | |
| 3 Aug 2026 | Series C+ | |
| 28 Jul 2026 | Seed | |
| 21 Jul 2026 | Seed | |
| 7 Jul 2026 | Seed |
Round details for SignalFire
Amounts, full round histories and every co-investor in SignalFire's rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
135 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Affiniti is a financial technology company that provides financial services including cards, banking, accounts payable, and expense management | Fintech | Portfolio page | ||
| Alchemy provides blockchain infrastructure for developers | FintechCrypto & Web3 | Portfolio page | ||
| The company provides a platform that connects patients to their care teams and enables continuous healthcare through data collection and analysis. | Healthcare & Biotech | Portfolio page | ||
| Anchore provides a platform for securing software supply chains and managing software composition analysis. | CybersecurityEnterprise Software | Portfolio page | ||
| Anomalo provides an autonomous data management system for monitoring data quality and detecting issues | Enterprise SoftwareAI & Machine Learning | Portfolio page | ||
| AnyTeam provides personalized agents for revenue teams to automate workflows and improve sales performance | AI & Machine LearningEnterprise Software | Portfolio page | ||
| Argyle provides a platform to automate income, employment, and asset verifications | Fintech | Portfolio page | ||
| Assembled provides workforce management software that utilizes AI and machine learning for scheduling, forecasting, and real-time analysis | AI & Machine LearningEnterprise Software | Portfolio page | ||
| Aura provides digital protection services to keep individuals and families safe from online security risks and identity theft. | CybersecurityFintech | Portfolio page | ||
| Auxilius automates clinical accruals and forecasts for biopharma companies | Healthcare & Biotech | Portfolio page | ||
| Bicycle Health provides online Suboxone treatment and support for opioid use disorder | Healthcare & Biotech | Portfolio page | ||
| The company provides automated time tracking for law firms and professional services using AI-powered timesheets. | Legal & ComplianceAI & Machine Learning | Jun 2026Series A | Funding round | |
| Blank Bio develops models to interpret RNA-seq data to help pharmaceutical companies make better clinical development decisions | Healthcare & Biotech | May 2026Seed | Page + round | |
| Blueberry turns social interactions into revenue, email list growth, first-party data, and customer loyalty using AI agents | AI & Machine LearningE-commerce & Marketplaces | Portfolio page | ||
| Blue Energy designs and builds nuclear power plants using a factory-based approach to reduce costs and construction time. | EducationIndustrial & Manufacturing | Mar 2026Debt | Funding round | |
| Blue Voice provides artificial intelligence technology for public safety agencies | AI & Machine LearningCybersecurity | Aug 2026Seed | Page + round | |
| The company provides an open source platform for modernizing and automating enterprise processes. | Enterprise SoftwareAI & Machine Learning | Portfolio page | ||
| Blend provides technology and services for compounding pharmacies to improve operations and patient outcomes | Healthcare & Biotech | Portfolio page | ||
| Centaur.ai provides expert data annotation for healthcare AI and other industries | Healthcare & Biotech | Portfolio page | ||
| ClassDojo provides a platform for teachers, families, and kids to connect and collaborate on social-emotional learning and classroom activities. | EducationEducation | Portfolio page |
About this data
site last read 10 Nov 2026- Site
- signalfire.com
- Last read
- 10 Nov 2026
- Watching since
- 5 Nov 2026
- Rounds since
- 23 May 2019
- Companies checked
- 135
Rates come from what VCinfo has observed since observation_start. Firms tend to remove companies that closed, so early rates understate reality. A company leaving a portfolio page does not mean it closed or exited. An unreachable site means our checks failed, nothing more.
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