15th Rock
Venture capital · Yokohama, Japan · Asia Pacific
15th Rock is a venture capital firm focused on human augmentation, mainly hardware, and Consumer Service 3.0, mainly software. It also operates the startup studio Spirete, which provides business matching, recruiting support and advisors to portfolio companies.
Invests inHealthcare & BiotechAI & Machine Learning
In its own wordshuman augmentationhardwareconsumer servicessoftwarestartup studio
Your fit with 15th Rock
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fits15th Rock lists 37 checked portfolio companies on its own site and is named in 3 funding rounds, 2 of them as lead. Its most frequent entry is Series A, 100% of the companies with a known first round. Its largest themes are Healthcare & Biotech (23%), AI & Machine Learning (20%) and Fintech (13%). 77% of its companies are based in Japan. It invests most often alongside Global Brain, Beta Venture Capital and Hiroshima Venture Capital.
Counts come from funding rounds that name 15th Rock, 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 15th Rock's whole history. Rounds on record name 3 companies; its own site lists 37. 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 | 0% |
| Series A | 100% |
| 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 | 0 | 0 |
| '25 | 0 | 0 |
| '26 | 3 | 2 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 75th | 37 companies |
| Recent activity | 76th | 3 rounds in 12 months |
| Early stage | 54th | 0% of entries at pre-seed or seed |
| Evidence | 56th | 3% of companies confirmed by a round |
| Sector focus | 28th | 23% in its largest sector |
| Reach | 78th | 5 countries |
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| Healthcare & Biotech | 23% | 15% |
| AI & Machine Learning | 20% | 18% |
| Fintech | 13% | 12% |
| Education | 7% | 7% |
| Industrial & Manufacturing | 7% | 7% |
| Media & Entertainment | 5% | 4% |
| E-commerce & Marketplaces | 5% | 6% |
| Robotics & Hardware | 4% | 1% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| Global Brain | 5 |
| Beta Venture Capital | 3 |
| Hiroshima Venture Capital | 3 |
| Iwagin Mirai Investment | 3 |
| JAFCO | 3 |
| Nippon Venture Capital | 3 |
| Samurai Incubate Inc. | 3 |
| Spiral Capital | 3 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers37100%
- 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 15th Rock 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 15th Rock| Date | Company | Stage |
|---|---|---|
| 7 Jul 2026 | Series A Led | |
| 22 Jun 2026 | Series A Led | |
| 23 Mar 2026 | Series A |
Round details for 15th Rock
Amounts, full round histories and every co-investor in 15th Rock's rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
37 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| The company has offices in Osaka, Tokyo, and Hiroshima. | Media & EntertainmentEducation | Portfolio page | ||
| Portfolio page | ||||
| Portfolio page | ||||
| Cellid develops AR glasses and related solutions | Consumer | Portfolio page | ||
| The company develops and researches silk protein and creates new value in the healthcare, food, cosmetics, and materials fields | Healthcare & BiotechFood & Agriculture | Jun 2026Series A | Funding round | |
| Degas is a technology company that combines farmer finance and geospatial AI to improve lives and build resilience at scale. | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| eGenesis develops human-compatible organs for patients with organ failure using genome engineering and transplantation | Healthcare & Biotech | Portfolio page | ||
| Ejenta develops a platform based on AI technology to provide connected care and support for healthcare | Healthcare & BiotechAI & Machine Learning | Portfolio page | ||
| EneCoat Technologies develops perovskite solar cells and their applications | EducationIndustrial & Manufacturing | Portfolio page | ||
| General Sense develops a platform that utilizes dogs' sense of smell to detect various molecular signatures for applications in security, healthcare, and agriculture. | Healthcare & BiotechAI & Machine Learning | Portfolio page | ||
| Ghoonuts develops treatments for aphasia, including a language training app | Healthcare & Biotech | Portfolio page | ||
| Gojo extends financial inclusion by supporting socially impactful financial service providers to succeed | FintechFintech | Portfolio page | ||
| The company develops and provides remote work platforms and devices for industrial and construction sites | Industrial & ManufacturingAI & Machine Learning | Jul 2026Series A | Page + round | |
| LetzRyd builds a driver-led mobility ecosystem with ownership and financial inclusion at its core, offering ride hailing and other transportation services. | Mobility & Logistics | Mar 2026Series A | Funding round | |
| Longan Vision develops a helmet-mounted thermal imaging system for firefighters and other first responders. | Industrial & Manufacturing | Portfolio page | ||
| Mechasys develops and sells a laser layout product that uses projected reality to bring digital layouts to life with millimetric accuracy | Real Estate & ConstructionIndustrial & Manufacturing | Portfolio page | ||
| The company develops and provides medical treatments and pharmaceuticals based on gut microbiome research. | Healthcare & Biotech | Portfolio page | ||
| The company develops and researches silk protein and creates new value in the healthcare, food, cosmetics, and materials fields. | Healthcare & BiotechFood & Agriculture | Portfolio page | ||
| Nobi provides technology for senior living, including fall prevention and detection, nurse call systems, and sleep improvement solutions | Healthcare & Biotech | Portfolio page | ||
| Onera Health provides sleep diagnostics and monitoring solutions for clinicians and patients | Healthcare & Biotech | Portfolio page |
About this data
site last read 5 Nov 2026- Site
- 15th-rock.com
- Last read
- 5 Nov 2026
- Watching since
- 5 Nov 2026
- Rounds since
- 23 Mar 2026
- Companies checked
- 37
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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