Investors / Operator Stack
Operator Stack
Venture capital
Operator Stack is a venture fund that invests in pre-seed and seed companies and provides hands-on help with hiring, customers, and follow-on raises. It is led by operators from Uber Freight and SumUp and co-invests alongside other funds.
Invests inFintech
In its own wordssupply chainfintechb2b saasphysical ailogisticspayments
Your fit with Operator Stack
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Or find every investor that fitsOperator Stack lists 35 checked portfolio companies on its own site and is named in 3 funding rounds. Its most frequent entry is Seed, 67% of the companies with a known first round. Its largest themes are Fintech (34%), AI & Machine Learning (14%) and E-commerce & Marketplaces (13%). 86% of its companies are based in United States. It invests most often alongside Y Combinator, Overton Venture Capital and Soma Capital.
Counts come from funding rounds that name Operator Stack, 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 Operator Stack's whole history. Rounds on record name 3 companies; its own site lists 35. 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 | 67% |
| Series A | 33% |
| Series B | 0% |
| Growth | 0% |
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 | 0 | 0 |
| '24 | 1 | 0 |
| '25 | 1 | 0 |
| '26 | 1 | 0 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 73th | 35 companies |
| Recent activity | 59th | 1 rounds in 12 months |
| Early stage | 80th | 67% of entries at pre-seed or seed |
| Evidence | 66th | 6% of companies confirmed by a round |
| Sector focus | 63th | 34% 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 | |
|---|---|---|
| Fintech | 34% | 12% |
| AI & Machine Learning | 14% | 18% |
| E-commerce & Marketplaces | 13% | 6% |
| Legal & Compliance | 8% | 2% |
| Healthcare & Biotech | 8% | 15% |
| Industrial & Manufacturing | 6% | 7% |
| Cybersecurity | 3% | 4% |
| Space & Defense | 3% | 3% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| Y Combinator | 4 |
| Overton Venture Capital | 3 |
| Soma Capital | 3 |
| AFG Partners | 2 |
| Capitoria | 2 |
| Clocktower Ventures | 2 |
| Earl Grey Capital | 2 |
| High Alpha | 2 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers3189%
- No longer answers00%
- Points to another company411%
- 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 Operator Stack head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Funds
as stated on its siteRecent portfolio activity
when companies last raised with Operator Stack| Date | Company | Stage |
|---|---|---|
| 19 Feb 2026 | Series A | |
| 9 Sept 2025 | Seed | |
| 1 Jun 2024 | Seed |
Round details for Operator Stack
Amounts, full round histories and every co-investor in Operator Stack's rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
35 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Portfolio page | ||||
| Airwave produces smart safety glasses with a built-in camera and AI that can record jobs and automatically complete reports. | Industrial & ManufacturingAI & Machine Learning | Portfolio page | ||
| The American Housing Corporation is a vertically integrated real estate developer and housing manufacturer that builds starter homes in America's most dynamic cities and neighborhoods using industrial manufacturing | Real Estate & Construction | Portfolio page | ||
| Blockdaemon provides digital ecosystem infrastructure and services for institutions to manage and scale their digital assets and transactions. | FintechCrypto & Web3 | Portfolio page | ||
| Bluedot provides a platform for electric vehicle fleet charging and management for autonomous fleets | Mobility & LogisticsE-commerce & Marketplaces | Portfolio page | ||
| Cardless provides technology, operations, and infrastructure for companies to create and manage their own credit card programs. | FintechE-commerce & Marketplaces | Portfolio page | ||
| CompScience provides workers' compensation insurance and risk management services to various industries. | FintechHealthcare & Biotech | Portfolio page | ||
| Copla provides compliance automation software and expert CISO support | CybersecurityLegal & Compliance | Feb 2026Series A | Funding round | |
| Distributional is a company that has pivoted to become Talaria Scientific | AI & Machine LearningHealthcare & Biotech | Jun 2024Seed | Page + round | |
| Dockware uses computer vision and AI to capture freight dimensions and other data | AI & Machine LearningFintech | Portfolio page | ||
| The company provides a payment method. | Fintech | Portfolio page | ||
| HubFlow provides automated appointment scheduling for freight brokers and carriers | Legal & ComplianceIndustrial & Manufacturing | Portfolio page | ||
FintechLegal & Compliance | Portfolio page | |||
| Infinicept is a payments platform that helps software companies, payment facilitators, and financial institutions launch, manage, and scale embedded payments. | Fintech | Portfolio page | ||
Fintech | Portfolio page | |||
| Nostra AI deploys a fleet of agents that work around the clock to make a store faster, error free, more secure, and more profitable. | E-commerce & MarketplacesAI & Machine Learning | Portfolio page | ||
| Nue provides a platform for selling, billing, and collecting payments, with features such as quote-to-cash, metering, and billing | FintechSpace & Defense | Portfolio page | ||
| OpenInfer develops AI systems infrastructure for handling unpredictable inference demand | AI & Machine LearningCybersecurity | Portfolio page | ||
| Parade provides capacity management solutions for freight brokerages and 3PLs to source and reuse carriers, automate bookings, and win more business. | Healthcare & BiotechIndustrial & Manufacturing | Portfolio page | ||
| Parento provides paid parental leave insurance coverage to companies, helping them support working parents. | Healthcare & BiotechFintech | Sept 2025Seed | Page + round |
About this data
site last read 5 Nov 2026- Site
- operator-stack.com
- Last read
- 5 Nov 2026
- Watching since
- 6 Nov 2026
- Rounds since
- 1 Jun 2024
- Companies checked
- 35
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.
Get Operator Stack's profile as data
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