Investors / United States / Rubicon Founders
Rubicon Founders
Venture capital · Nashville, TN, United States · North America
Rubicon Founders is an entrepreneurial healthcare investment firm focused on building and growing transformational companies. It seeks to both invest in and partner to build businesses that aim to transform the way people receive healthcare.
Invests inHealthcare & Biotech
In its own wordshealthcarehealth servicescompany building
Your fit with Rubicon Founders
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See how your round matches what it backs, point by point.
Or find every investor that fitsRubicon Founders lists 14 checked portfolio companies on its own site and is named in 4 funding rounds, 1 of them as lead. Its most frequent entry is Series B, 67% of the companies with a known first round. Its largest themes are Healthcare & Biotech (80%), Fintech (7%) and AI & Machine Learning (7%). 100% of its companies are based in United States. It invests most often alongside Oak HC/FT, K2 HealthVentures and Kleiner Perkins.
Counts come from funding rounds that name Rubicon Founders, 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 Rubicon Founders' whole history. Rounds on record name 4 companies; its own site lists 14. 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 roundRubicon Founders does not state its stages on its site, so only what it does is shown.
Show as a table
| Value | |
|---|---|
| Pre-seed | 0% |
| Seed | 0% |
| Series A | 33% |
| Series B | 67% |
| 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 | 0 | 0 |
| '25 | 1 | 0 |
| '26 | 3 | 1 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 36th | 14 companies |
| Recent activity | 76th | 3 rounds in 12 months |
| Early stage | 54th | 0% of entries at pre-seed or seed |
| Evidence | 96th | 29% of companies confirmed by a round |
| Sector focus | 93th | 80% in its largest sector |
| Reach | 19th | 1 country |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| Oak HC/FT | 6 |
| K2 HealthVentures | 3 |
| Kleiner Perkins | 2 |
| Optum Ventures | 2 |
| Town Hall Ventures | 2 |
| Annox Capital | 1 |
| Autism Impact Fund | 1 |
| BroadOak Capital Partners | 1 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers14100%
- 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.
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| Healthcare & Biotech | 80% | 15% |
| Fintech | 7% | 12% |
| AI & Machine Learning | 7% | 18% |
| Media & Entertainment | 7% | 4% |
Co-investor network
who it backs companies with, and who they back togetherCompare Rubicon Founders 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 Rubicon Founders| Date | Company | Stage |
|---|---|---|
| 26 Feb 2026 | Round | |
| 11 Feb 2026 | Series A | |
| 29 Jan 2026 | Series B Led | |
| 17 Sept 2025 | Series B |
Round details for Rubicon Founders
Amounts, full round histories and every co-investor in Rubicon Founders' rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
14 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Atlas Oncology Partners delivers a differentiated care experience in partnership with oncologists to provide cancer care and whole person care to patients. | Healthcare & Biotech | Feb 2026Series A | Page + round | |
| Cadre Hospice provides hospice care to patients and their families. | Healthcare & Biotech | Portfolio page | ||
| Caidya provides clinical development services for various therapeutic areas | Healthcare & Biotech | Portfolio page | ||
| Comocare partners with community health centers to deliver high quality, integrated, mental health programs. | Healthcare & Biotech | Portfolio page | ||
| Evergreen Nephrology makes kidney care easier by working closely with patients and providers to help them achieve better outcomes | Healthcare & Biotech | Portfolio page | ||
| Indigo provides medical malpractice insurance for physicians | Healthcare & BiotechFintech | Jan 2026Series B | Page + round | |
| HarmonyCares offers expert, comprehensive healthcare services in the home for people with complex medical issues. | Healthcare & Biotech | Portfolio page | ||
| Honest Health helps health systems build sustainable, shared financial risk models and delivers complementary value-driven solutions for primary care transformation | Healthcare & Biotech | Feb 2026Round | Page + round | |
| Horizon Infusions provides infusion therapy services to patients in various locations across the US | Healthcare & Biotech | Portfolio page | ||
| Imagine Pediatrics provides 24/7 virtual and in-home care for children with special health care needs. | Healthcare & Biotech | Sept 2025Series B | Page + round | |
| Pediatric Associates provides medical services to children and adolescents in various locations in Florida. | Healthcare & Biotech | Portfolio page | ||
| Portfolio page | ||||
| Quest Analytics offers provider network management solutions and services for healthcare provider networks | Healthcare & Biotech | Portfolio page | ||
| The company provides an AI platform for marketing teams to create, optimize, and influence content | AI & Machine LearningMedia & Entertainment | Portfolio page |
About this data
site last read 5 Nov 2026- Site
- rubiconfounders.com
- Last read
- 5 Nov 2026
- Watching since
- 5 Nov 2026
- Rounds since
- 17 Sept 2025
- Companies checked
- 14
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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