Investors / United States / Positive Sum
Positive Sum
Venture capital · CT, United States · North America
Positive Sum is an investment firm that backs founders pursuing their life's work. Its site lists a portfolio of companies and a team.
Invests inAI & Machine LearningFintech
In its own wordstechnologyhealthcarefintechsoftware
Your fit with Positive Sum
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsPositive Sum lists 29 checked portfolio companies on its own site and is named in 11 funding rounds, 1 of them as lead. Its most frequent entry is Growth, 56% of the companies with a known first round. Its largest themes are AI & Machine Learning (24%), Fintech (22%) and Healthcare & Biotech (9%). 86% of its companies are based in United States. It invests most often alongside Kleiner Perkins, Sequoia Capital and Anti Fund.
Counts come from funding rounds that name Positive Sum, 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 Positive Sum's whole history. Rounds on record name 9 companies; its own site lists 29. 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 roundPositive Sum does not state its stages on its site, so only what it does is shown.
Show as a table
| Value | |
|---|---|
| Pre-seed | 0% |
| Seed | 11% |
| Series A | 0% |
| Series B | 33% |
| Growth | 56% |
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 | 0 | 0 |
| '25 | 3 | 0 |
| '26 | 8 | 1 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 68th | 30 companies |
| Recent activity | 93th | 8 rounds in 12 months |
| Early stage | 55th | 11% of entries at pre-seed or seed |
| Evidence | 95th | 27% of companies confirmed by a round |
| Sector focus | 30th | 24% 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 | 24% | 18% |
| Fintech | 22% | 12% |
| Healthcare & Biotech | 9% | 15% |
| Enterprise Software | 7% | 8% |
| Education | 7% | 7% |
| Space & Defense | 4% | 3% |
| Industrial & Manufacturing | 4% | 7% |
| Media & Entertainment | 4% | 4% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| Kleiner Perkins | 6 |
| Sequoia Capital | 6 |
| Anti Fund | 5 |
| General Catalyst | 5 |
| Khosla Ventures | 5 |
| Ribbit | 5 |
| Valor Siren Ventures | 5 |
| Y Combinator | 5 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers29100%
- 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 togetherCompare Positive Sum 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 Positive Sum| Date | Company | Stage |
|---|---|---|
| 11 Nov 2026 | Series C+ | |
| 8 Sept 2026 | Series C+ | |
| 18 Aug 2026 | Series C+ | |
| 15 Jul 2026 | Seed Led | |
| 15 Jul 2026 | Series C+ | |
| 29 Apr 2026 | Series C+ | |
| 3 Feb 2026 | Series C+ | |
| 13 Jan 2026 | Series B |
Round details for Positive Sum
Amounts, full round histories and every co-investor in Positive Sum's rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
29 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Alpaca provides APIs for trading stocks, options, and cryptocurrencies | FintechCrypto & Web3 | Portfolio page | ||
| Arcana provides a platform for portfolio intelligence for hedge funds and asset managers | Fintech | Portfolio page | ||
| Portfolio page | ||||
| Base Power provides home energy solutions, including backup power and energy savings, to homeowners in Texas and Illinois. | EducationIndustrial & Manufacturing | Oct 2025Series C+ | Page + round | |
| The company acquires and improves iconic digital products. | Media & EntertainmentConsumer | Portfolio page | ||
| Blues handles the heavy lifting with a device-to-cloud system that includes plug-and-play hardware, connectivity, cloud infrastructure and fleet management | Industrial & ManufacturingHealthcare & Biotech | Portfolio page | ||
| Canopy provides an advisor technology platform for investment management | Fintech | Portfolio page | ||
| Casa provides bitcoin self-custody and inheritance services for individuals and businesses. | FintechCrypto & Web3 | Portfolio page | ||
| Cognition operates an autonomous software engineer called Devin that helps human engineers with repetitive work and focuses on problem solving and designing systems. | AI & Machine LearningEnterprise Software | Sept 2026Series C+ | Page + round | |
| The company produces and sells a smart bed with cooling and heating technology. | Healthcare & BiotechConsumer | Portfolio page | ||
| Etched designs and manufactures AI hardware, specifically frontier inference clusters, which include co-designed chips, racks, software, and manufacturing methods. | AI & Machine LearningSpace & Defense | Jan 2026Series B · 2 rounds | Page + round | |
| Portfolio page | ||||
| Fortell develops and provides AI-powered hearing aids. | Healthcare & Biotech | Portfolio page | ||
| Sept 2025Series B | Page + round | |||
| Imprint creates co-branded credit cards and other financial products for companies | FintechE-commerce & Marketplaces | Nov 2026Series C+ | Page + round | |
| Inheritance AI provides a service related to human intelligence and learning with Witness. | AI & Machine Learning | Portfolio page | ||
| Invert connects bioprocess equipment and data sources across process development and manufacturing | Healthcare & Biotech | Portfolio page | ||
| January uses AI for debt collection to recover debts from consumers on behalf of creditors. | FintechAI & Machine Learning | Portfolio page | ||
| The company helps individuals become funded founders by providing access to cofounders, mentorship, and resources to build a company. | EducationFintech | Portfolio page | ||
| The company provides cloud infrastructure for teams to develop, train, and serve AI applications at scale. | AI & Machine LearningSpace & Defense | Portfolio page |
About this data
site last read 13 Nov 2026- Site
- positivesum.com
- Last read
- 13 Nov 2026
- Watching since
- 5 Nov 2026
- Rounds since
- 30 Apr 2025
- Companies checked
- 29
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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