Investors / United States / Quiet Capital
Quiet Capital
Venture capital · San Francisco, CA, United States · North America
Quiet Capital is an investment firm that describes itself as builders who invest in founders. It publishes essays and maintains a portfolio and careers page.
Invests inAI & Machine LearningHealthcare & Biotech
In its own wordsearly stagefounders
Your fit with Quiet Capital
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsQuiet Capital lists 21 checked portfolio companies on its own site and is named in 25 funding rounds, 4 of them as lead. Its most frequent entry is Seed, 33% of the companies with a known first round. Its largest themes are AI & Machine Learning (27%), Healthcare & Biotech (24%) and Fintech (12%). 76% of its companies are based in United States. It invests most often alongside General Catalyst, Avid Ventures and BoxGroup.
Counts come from funding rounds that name Quiet Capital, complete from mid-2025: earlier rounds appear only when they were reported later. Round amounts and full round histories are on Fundup AI.
Entry stage
share of companies by the stage of its first roundShow as a table
| Value | |
|---|---|
| Pre-seed | 0% |
| Seed | 33% |
| Series A | 29% |
| Series B | 24% |
| Growth | 14% |
Activity by year
rounds it joined, last 10 yearsShow as a table
| Total | Rounds it led | |
|---|---|---|
| '17 | 0 | 0 |
| '18 | 0 | 0 |
| '19 | 0 | 0 |
| '20 | 0 | 0 |
| '21 | 0 | 0 |
| '22 | 0 | 0 |
| '23 | 2 | 0 |
| '24 | 0 | 0 |
| '25 | 9 | 1 |
| '26 | 14 | 3 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 53th | 21 companies |
| Recent activity | 97th | 15 rounds in 12 months |
| Early stage | 64th | 33% of entries at pre-seed or seed |
| Evidence | 52th | 0% of companies confirmed by a round |
| Sector focus | 40th | 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 | 24% | 15% |
| Fintech | 12% | 12% |
| Enterprise Software | 9% | 8% |
| Space & Defense | 6% | 3% |
| Media & Entertainment | 6% | 4% |
| Industrial & Manufacturing | 3% | 7% |
| Robotics & Hardware | 3% | 1% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| General Catalyst | 5 |
| Avid Ventures | 2 |
| BoxGroup | 2 |
| GV | 2 |
| Humba Ventures | 2 |
| Insight Partners | 2 |
| Lightspeed Venture Partners | 2 |
| Soma Capital | 2 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers21100%
- No longer answers00%
- Points to another company00%
- 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 General Catalyst
Compare Quiet Capital head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Funds
from public registers and its siteRecent portfolio activity
when companies last raised with Quiet Capital| Date | Company | Stage |
|---|---|---|
| 21 Oct 2026 | Series A | |
| 15 Oct 2026 | Seed Led | |
| 28 Sept 2026 | Series C+ | |
| 17 Sept 2026 | Seed Led | |
| 15 Sept 2026 | Series C+ | |
| 4 Aug 2026 | Series A | |
| 30 Jul 2026 | Seed | |
| 24 Jun 2026 | Series C+ |
Round details for Quiet Capital
Amounts, full round histories and every co-investor in Quiet Capital's rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
21 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Amae Health delivers precision medicine and integrated care for complex mental health conditions | Healthcare & Biotech | Nov 2025Series B | Funding round | |
| Arch provides data management and reporting services for private markets investments | FintechIndustrial & Manufacturing | Sept 2025Series B | Funding round | |
| Assort Health develops an AI voice agent for healthcare to handle patient interactions, including scheduling and intake | Healthcare & BiotechAI & Machine Learning | Sept 2025Series B · 2 rounds | Funding round | |
| biossil advances late-stage programs for life-threatening diseases | Healthcare & Biotech | Apr 2026Series B · 2 rounds | Funding round | |
| The company is building a helpful robot for every home | Robotics & Hardware | Mar 2025Seed | Funding round | |
| Intropy automates inventory and pricing decisions for parts distribution businesses | AI & Machine LearningE-commerce & Marketplaces | Jul 2026Seed | Funding round | |
| Kilo.ai provides an open-source AI coding agent for various platforms, including IDEs, CLI, and cloud. | AI & Machine LearningEnterprise Software | Dec 2025Seed | Funding round | |
| Mach9 makes web-based CAD software that uses AI to automatically extract features such as breaklines, curbs, and poles from raw LiDAR and reality-capture scans for civil engineering and survey work. | Space & Defense | Oct 2026Series A | Funding round | |
| The company powers the next generation of AI-native law firms with a proprietary technology platform and a centralized back office. | Legal & ComplianceAI & Machine Learning | Apr 2026Series A | Funding round | |
| Myxt connects musicians with their fans | Enterprise SoftwareMedia & Entertainment | Apr 2023Seed | Funding round | |
| Nava Benefits combines elite benefits advisors with AI-powered technology to provide employee benefits brokerage services | Healthcare & Biotech | Oct 2025Series C+ | Funding round | |
| Orchard Robotics provides technology and software to help farmers measure and manage their crops using AI-powered cameras and data analysis. | AI & Machine LearningAI & Machine Learning | Sept 2025Series A | Funding round | |
| Polyphron trains frontier AI models to manufacture and simulate donor-diverse human tissues to create the critical verification substrate for human biology. | Healthcare & Biotech | Sept 2026Seed | Funding round | |
| Quartermaster provides real-time maritime awareness through a distributed network of vessel-mounted sensors and AI-powered monitoring | AI & Machine LearningCybersecurity | May 2026Series A | Funding round | |
| The company provides a CI/CD platform for the agentic dev cycle | Healthcare & BiotechFintech | Aug 2026Series A | Funding round | |
| Sanas provides a real-time speech AI platform for various industries, including healthcare and financial services, to improve conversations between people and systems | AI & Machine LearningHealthcare & Biotech | Feb 2025Series B | Funding round | |
| Suno generates music using artificial intelligence. | Enterprise SoftwareMedia & Entertainment | Jun 2026Series C+ | Funding round | |
| Taalas is creating a platform for quickly turning any AI model into custom silicon. | AI & Machine LearningSpace & Defense | Mar 2026Round | Funding round | |
| Thatch provides a health benefits platform that allows employees to choose their own care and benefits within a set budget | Healthcare & Biotech | Feb 2023Seed · 2 rounds | Funding round | |
| Homa provides services to help people buy homes, including on-demand tours and expert guidance throughout the process. | Real Estate & ConstructionFintech | Oct 2026Seed | Funding round |
About this data
site last read 12 Nov 2026- Site
- quiet.com
- Last read
- 12 Nov 2026
- Watching since
- 5 Nov 2026
- Rounds since
- 15 Feb 2023
- Companies checked
- 21
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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