Investors / Serbia / Fifth Quarter Ventures
Fifth Quarter Ventures
Venture capital · Belgrade, Serbia · Europe
Fifth Quarter Ventures is an early-stage venture capital fund that invests in startups from the Western Balkans and the Adriatic region. It focuses on areas such as AI, developer tools, open-source software, Industry 5.0 and crypto/Web3.
Invests inAI & Machine Learning
In its own wordsaidev toolsopen-sourceindustry 5.0cryptoweb3
Your fit with Fifth Quarter Ventures
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsFifth Quarter Ventures lists 16 checked portfolio companies on its own site and is named in 3 funding rounds, 2 of them as lead. Its most frequent entry is Seed, 100% of the companies with a known first round. Its largest themes are AI & Machine Learning (21%), Enterprise Software (13%) and Healthcare & Biotech (13%). 44% of its companies are based in United States. It invests most often alongside South Central Ventures, Y Combinator and Abstraction Capital.
Counts come from funding rounds that name Fifth Quarter Ventures, 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 Fifth Quarter Ventures' whole history. Rounds on record name 3 companies; its own site lists 16. 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 | 100% |
| Series A | 0% |
| 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 | 2 | 2 |
| '26 | 1 | 0 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 42th | 16 companies |
| Recent activity | 59th | 1 rounds in 12 months |
| Early stage | 100th | 100% of entries at pre-seed or seed |
| Evidence | 90th | 19% of companies confirmed by a round |
| Sector focus | 19th | 21% in its largest sector |
| Reach | 84th | 6 countries |
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| AI & Machine Learning | 21% | 18% |
| Enterprise Software | 13% | 8% |
| Healthcare & Biotech | 13% | 15% |
| Fintech | 13% | 12% |
| Cybersecurity | 8% | 4% |
| Real Estate & Construction | 8% | 3% |
| Space & Defense | 8% | 3% |
| Robotics & Hardware | 4% | 1% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| South Central Ventures | 3 |
| Y Combinator | 2 |
| Abstraction Capital | 1 |
| Antler | 1 |
| Astir Ventures | 1 |
| Coalition Capital | 1 |
| Exceptional Ventures | 1 |
| Fine Structure Ventures | 1 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers1594%
- No longer answers00%
- Points to another company16%
- 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 togetherAll co-investors or Compare portfolios with South Central Ventures
Compare Fifth Quarter Ventures 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 Fifth Quarter Ventures| Date | Company | Stage |
|---|---|---|
| 18 Jun 2026 | Seed | |
| 17 Sept 2025 | Seed Led | |
| 13 Feb 2025 | Seed Led |
Round details for Fifth Quarter Ventures
Amounts, full round histories and every co-investor in Fifth Quarter Ventures' rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
16 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Aire Labs provides a project development platform for energy and climate infrastructure | FintechEducation | Portfolio page | ||
| Better & Better sells oral care products such as toothpaste and toothbrushes. | Healthcare & Biotech | Portfolio page | ||
| BoolSi compiles software functions into custom hardware accelerators | Robotics & HardwareAI & Machine Learning | Jun 2026Seed | Page + round | |
| Bubo2 creates 3D models from photos, video, and 360° footage | Media & EntertainmentReal Estate & Construction | Sept 2025Seed | Page + round | |
| Cosmic Buildings builds custom homes using a mobile robotic factory. | Real Estate & Construction | Portfolio page | ||
| Deyta is an engineering-first company working towards making AI systems work reliably over long horizons by building the necessary data layer. | AI & Machine LearningCybersecurity | Portfolio page | ||
| GlycanAge measures biological age through IgG glycans, providing a view of how lifestyle affects chronic inflammation and healthy aging. | Healthcare & Biotech | Portfolio page | ||
| Kortix provides an open-source operating system for companies | Enterprise SoftwareAI & Machine Learning | Portfolio page | ||
| Nextesy provides AI business software for Swiss small and medium-sized enterprises, replacing Excel, paper folders, and previous accounting software with automated routine work using AI. | AI & Machine LearningEnterprise Software | Feb 2025Seed | Page + round | |
| Orangepill provides a financial execution control plane that composes payments, wallets, financial state, workflows, and external providers into governed financial operations. | Fintech | Portfolio page | ||
Human ResourcesSpace & Defense | Portfolio page | |||
| Portfolio page | ||||
| Portfolio page | ||||
| Taalas is creating a platform for quickly turning any AI model into custom silicon. | AI & Machine LearningSpace & Defense | Portfolio page | ||
| Treblle provides full API visibility and runtime intelligence for enterprises to discover, secure, and manage their APIs and agents across any cloud, gateway, or technology. | Enterprise SoftwareCybersecurity | Portfolio page | ||
| Wasp is a full-stack TypeScript framework for React and Node.js | Healthcare & BiotechFintech | Portfolio page |
About this data
site last read 12 Nov 2026- Site
- fifthquarter.vc
- Last read
- 12 Nov 2026
- Watching since
- 8 Nov 2026
- Rounds since
- 13 Feb 2025
- Companies checked
- 16
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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