Investor actively backing innovative startups and growth-stage companies across various industries and funding rounds.
| Company Name | Founded | Funding Stage | Amount | City |
|---|---|---|---|---|
| Momentus | 2026 | Post Ipo Equity | $5.0M | Santa Clara |
| Substack | 2026 | Secondary Market | Undisclosed | San Francisco |
| Last Energy | 2025 | Series C | $100.0M | Washington |
| Kilo Code | 2025 | Seed | $8.0M | San Francisco |
| Topsort | 2025 | Series Unknown | Undisclosed | Palo Alto |
| Doppel | 2025 | Series C | $70.0M | Covina |
| OnRamp | 2025 | Series A | $15.0M | Boston |
| Aerolensec | 2025 | Seed | $4.2M | Bellevue |
| Amae Health | 2025 | Series B | $25.0M | San Francisco |
| DragonflyDB | 2025 | Non Equity Assistance | Undisclosed | Tel Aviv |
| # | Company | Stage | Amount | Location |
|---|---|---|---|---|
| 76 | Momentus | Post Ipo Equity | $5.0M | Santa Clara, United States |
| 77 | Substack | Secondary Market | Undisclosed | San Francisco, United States |
| 78 | Last Energy | Series C | $100.0M | Washington, United States |
| 79 | Kilo Code | Seed | $8.0M | San Francisco, United States |
| 80 | Topsort | Series Unknown | Undisclosed | Palo Alto, United States |
| 81 | Doppel | Series C | $70.0M | Covina, United States |
| 82 | OnRamp | Series A | $15.0M | Boston, United States |
| 83 | Aerolensec | Seed | $4.2M | Bellevue, United States |
| 84 | Amae Health | Series B | $25.0M | San Francisco, United States |
| 85 | DragonflyDB | Non Equity Assistance | Undisclosed | Tel Aviv, Israel |
Momentus is a commercial space company providing satellite buses, in-space transportation, hosted payloads, and in-orbit services.
Substack is a subscription-based newsletter publishing platform for independent writers.
Last Energy is a nuclear technology company that provides nuclear energy through its modular micro nuclear power plants.
Kilo Code provides an open-source AI-powered coding assistant that supports code generation, debugging, and documentation.
Topsort provides AI-powered auction tools and infrastructure APIs to help brands build ad businesses without cookies or user tracking.
Doppel is an AI-native security platform that helps organizations defend against social engineering risks and digital impersonation.
OnRamp is customer onboarding software that helps businesses accelerate time-to-value with guided workflows and automation.
Amae Health specializes in integrated outpatient care for individuals with severe mental illness.
DragonflyDB is the fastest memory store in the universe.
Rappi is an on-demand delivery platform that connects users with local businesses and couriers to deliver a wide range of products.
Basetwo is an AI CoPilot for manufacturing that provides engineers with recommendations on how to optimize yield, quality, and costs.
Luzid is a Software Development firm offering AI based developer's automation tools for enterprise implementation processes.
Modal develops machine learning software to help run code in the cloud.
Tilt (formerly Empower) is a financial technology company on a mission to expand access to fair credit.
Arch digitally manages private investment operations for investors and investment advisors.
Orchard Robotics develops an operating system that enables precision agriculture driven by robots and AI.
FirstClub aims to become a speedy commerce-first omnichannel retailer that promotes product quality through offline experience stores.
Commonwealth Fusion Systems designs and develops commercial fusion energy systems to produce clean energy.
Cache is a fintech startup that offers brokerage service for individuals holding large stock positions.
ShareWell is a peer assistance platform that allows users to participate in small group video sessions.
Pano uses deep learning AI and computer vision to automatically detect, verify and classify wildfire events in real time.
Bedrock Ocean Exploration is a platform for underwater vehicles.
Openlayer is an analysis platform that "opens up" machine learning models by detecting and eliminating failure patterns and biases.
OSCAR is a home services app that offers a platform for booking various on-demand home services for customers.
Quiet Capital has invested in 208 companies tracked in our database. The portfolio spans multiple industries and funding stages, from seed-stage startups to late-stage companies.
Quiet Capital's top investment sectors include Software, Artificial Intelligence (AI), Information Technology, Finance, Clean Energy. The firm invests across 76 different industry categories.
Among tracked funding rounds, Commonwealth Fusion Systems received $863.0M in a Series B round. Quiet Capital's total known invested capital is $3.8B.
Quiet Capital's average investment size is $22.5M across its portfolio of 208 companies.
Recent Quiet Capital portfolio additions include Momentus, Substack, Last Energy, Kilo Code, Topsort. These companies were founded in 2020 or later.
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