Investors / United States / Greylock
Greylock
Venture capital · San Francisco, CA, United States · North America
Greylock Partners is a venture capital firm whose partners make one or two new investments a year and work closely with founders. It runs programs including Greylock Edge, Greylock X, and a Talent Network, and has offices in San Francisco and Menlo Park.
Invests inAI & Machine LearningCybersecurity
In its own wordsai infrastructureenterprisecybersecurityconsumerfounder support
Your fit with Greylock
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsGreylock lists 153 checked portfolio companies on its own site and is named in 48 funding rounds, 15 of them as lead. Its most frequent entry is Seed, 28% of the companies with a known first round. Its largest themes are AI & Machine Learning (27%), Cybersecurity (16%) and Fintech (14%). 86% of its companies are based in United States. It invests most often alongside Andreessen Horowitz, Lightspeed Venture Partners and Sequoia Capital.
Counts come from funding rounds that name Greylock, 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 Greylock's whole history. Rounds on record name 44 companies; its own site lists 153. 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 roundGreylock does not state its stages on its site, so only what it does is shown.
Show as a table
| Value | |
|---|---|
| Pre-seed | 0% |
| Seed | 28% |
| Series A | 28% |
| Series B | 25% |
| Growth | 20% |
Activity by year
rounds it joined, last 10 yearsShow as a table
| Total | Rounds it led | |
|---|---|---|
| '17 | 1 | 0 |
| '18 | 1 | 0 |
| '19 | 0 | 0 |
| '20 | 1 | 0 |
| '21 | 1 | 0 |
| '22 | 1 | 0 |
| '23 | 1 | 1 |
| '24 | 1 | 1 |
| '25 | 18 | 7 |
| '26 | 22 | 6 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 98th | 153 companies |
| Recent activity | 99th | 24 rounds in 12 months |
| Early stage | 60th | 28% of entries at pre-seed or seed |
| Evidence | 93th | 23% of companies confirmed by a round |
| Sector focus | 43th | 27% in its largest sector |
| Reach | 88th | 7 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% |
| Cybersecurity | 16% | 4% |
| Fintech | 14% | 12% |
| Enterprise Software | 11% | 8% |
| Healthcare & Biotech | 7% | 15% |
| Space & Defense | 5% | 3% |
| E-commerce & Marketplaces | 4% | 6% |
| Media & Entertainment | 3% | 4% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| Andreessen Horowitz | 19 |
| Lightspeed Venture Partners | 17 |
| Sequoia Capital | 17 |
| IVP | 15 |
| Salesforce Ventures | 15 |
| Glynn Capital | 14 |
| SV Angel | 14 |
| Accel | 13 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers14393%
- No longer answers00%
- Points to another company107%
- 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 togetherAll co-investors or Compare portfolios with Andreessen Horowitz
Compare Greylock 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 Greylock| Date | Company | Stage |
|---|---|---|
| 29 Oct 2026 | Series A | |
| 22 Sept 2026 | Series C+ | |
| 10 Sept 2026 | Series A | |
| 9 Sept 2026 | Series A | |
| 8 Sept 2026 | Series A Led | |
| 8 Sept 2026 | Series C+ | |
| 2 Sept 2026 | Series C+ | |
| 4 Aug 2026 | Series C+ |
Round details for Greylock
Amounts, full round histories and every co-investor in Greylock's rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
153 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| The company provides artificial intelligence-based security platforms and services for cybersecurity operations | CybersecurityAI & Machine Learning | Dec 2025Series A | Page + round | |
| Abnormal AI provides behavioral AI for email, identity, and AI security | CybersecurityAI & Machine Learning | Portfolio page | ||
| Ada Infrastructure designs, develops, and operates the digital infrastructure that enables the world's leading cloud and AI innovators to grow, scale, and create what is next. | AI & Machine LearningCybersecurity | Portfolio page | ||
| Portfolio page | ||||
| AI Fund is a venture studio that collaborates with entrepreneurs, venture funds, and corporate partners to create companies that move humanity forward. | AI & Machine LearningFintech | Portfolio page | ||
| Airbnb provides holiday rentals and unique homes for travelers. | Real Estate & ConstructionLegal & Compliance | Portfolio page | ||
| AirOps works with clients to set and execute the right AI discovery strategy to earn an agent's trust and drive growth for their brand. | AI & Machine LearningMedia & Entertainment | Nov 2025Series B | Page + round | |
| Altara helps companies increase yield and improve products using specialized AI agents for industrial innovation | Industrial & ManufacturingAI & Machine Learning | May 2026Seed | Page + round | |
| AmplifyMD provides a virtual care platform for hospitals and health systems to deliver high-quality care remotely | Healthcare & Biotech | Sept 2025Series B | Page + round | |
| Anthropic develops AI models and products, including the Claude models, and conducts AI safety research. | AI & Machine LearningEnterprise Software | Portfolio page | ||
| Antioch develops physical AI at the speed of software using high-fidelity simulation for the full physical AI lifecycle | AI & Machine LearningIndustrial & Manufacturing | Sept 2026Series A | Page + round | |
| Apiiro provides security for agentic development environments | CybersecurityAI & Machine Learning | Portfolio page | ||
| AppDynamics optimizes apps with full-stack insight | Enterprise SoftwareCybersecurity | Portfolio page | ||
| ApplicationsOnline, LLC develops and provides online application services for various organizations, including colleges, secondary schools, and non-profits. | EducationHealthcare & Biotech | Portfolio page | ||
| Arista Networks provides cloud networking solutions for next-generation data centers and cloud networks. | AI & Machine LearningCybersecurity | Portfolio page | ||
| Aspora provides money transfer services from the USA to India | FintechFintech | May 2025Series B | Page + round | |
| The company harnesses machine learning and structural biology for RNA drug discovery | Healthcare & Biotech | Portfolio page | ||
| Atomic provides a framework for connected banking, offering solutions for authentication, payroll and merchant access, deposit, and subscription management | FintechFintech | Portfolio page | ||
| Aurora develops and implements self-driving freight technology to improve road safety and increase supply chain efficiency | AI & Machine LearningMobility & Logistics | Portfolio page | ||
| Ava Protocol provides automated DeFi management services, allowing users to automate tasks such as repayments and swaps based on their portfolio | Fintech | Portfolio page |
About this data
site last read 12 Nov 2026- Site
- greylock.com
- Last read
- 12 Nov 2026
- Watching since
- 5 Nov 2026
- Rounds since
- 28 Feb 2013
- Companies checked
- 153
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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