Investors / Decibel
Decibel
Venture capital
Decibel is an early-stage investor that backs technical founders building essential software for engineering and security teams. It supports portfolio companies with early customer introductions, go-to-market guidance, founder advising and talent recruiting.
Invests inAI & Machine LearningCybersecurity
In its own wordssoftwaresecurityengineeringopen sourcedeveloper toolsgo-to-market
Your fit with Decibel
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsDecibel lists 37 checked portfolio companies on its own site and is named in 10 funding rounds, 4 of them as lead. Its most frequent entry is Series A, 40% of the companies with a known first round. Its largest themes are AI & Machine Learning (35%), Cybersecurity (32%) and Enterprise Software (11%). 85% of its companies are based in United States. It invests most often alongside Aviso Ventures, IQT and Insight Partners.
Counts come from funding rounds that name Decibel, 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 Decibel's whole history. Rounds on record name 10 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 roundDecibel does not state its stages on its site, so only what it does is shown.
Show as a table
| Value | |
|---|---|
| Pre-seed | 0% |
| Seed | 30% |
| Series A | 40% |
| Series B | 20% |
| Growth | 10% |
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 | 7 | 3 |
| '26 | 3 | 1 |
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 | 61th | 30% of entries at pre-seed or seed |
| Evidence | 94th | 24% of companies confirmed by a round |
| Sector focus | 64th | 35% 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 | 35% | 18% |
| Cybersecurity | 32% | 4% |
| Enterprise Software | 11% | 8% |
| Space & Defense | 9% | 3% |
| Healthcare & Biotech | 3% | 15% |
| Fintech | 3% | 12% |
| Media & Entertainment | 2% | 4% |
| Legal & Compliance | 2% | 2% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| Aviso Ventures | 7 |
| IQT | 4 |
| Insight Partners | 3 |
| Madrona | 3 |
| 645 Ventures | 2 |
| Ansa | 2 |
| Bain Capital Ventures | 2 |
| Cisco Investments | 2 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers3492%
- No longer answers00%
- Points to another company38%
- 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 Decibel 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 Decibel| Date | Company | Stage |
|---|---|---|
| 25 Jun 2026 | Series A | |
| 15 Jun 2026 | Seed Led | |
| 31 Mar 2026 | Series C+ | |
| 16 Oct 2025 | Series A | |
| 28 Jul 2025 | Series A | |
| 22 Jul 2025 | Series A Led | |
| 17 Jul 2025 | Seed Led | |
| 17 Jul 2025 | Series B |
Round details for Decibel
Amounts, full round histories and every co-investor in Decibel'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 |
|---|---|---|---|---|
| Abacus.ai develops and provides AI-powered assistant solutions for professionals and enterprises | AI & Machine LearningEnterprise Software | Portfolio page | ||
| Akuity provides enterprise software delivery, continuous promotion, and operations to modernize application delivery | Enterprise SoftwareAI & Machine Learning | Portfolio page | ||
AI & Machine LearningSpace & Defense | Portfolio page | |||
| Bicycle provides AI analytics agents for revenue-critical data | AI & Machine LearningSpace & Defense | Portfolio page | ||
CybersecuritySpace & Defense | Portfolio page | |||
| Botpress builds and provides AI agent platforms for customer support | AI & Machine LearningSpace & Defense | Jun 2025Series B | Page + round | |
| Censys provides internet intelligence and insights for security operations and exposure management. | Cybersecurity | Mar 2026Series C+ | Page + round | |
| Confident Security develops and provides private and secure AI inference solutions for businesses. | AI & Machine LearningCybersecurity | Jul 2025Seed | Funding round | |
| Credo AI provides an AI governance platform to help companies adopt, scale, and govern trusted AI effectively. | AI & Machine LearningCybersecurity | Portfolio page | ||
| Cube Dev provides a business intelligence platform built on a semantic layer for both humans and AI agents | AI & Machine LearningEnterprise Software | Portfolio page | ||
| Dreadnode provides AI infrastructure for cybersecurity, allowing security teams to own, operationalize, and improve agentic cyber capabilities. | CybersecurityAI & Machine Learning | Portfolio page | ||
| Dropzone AI develops AI agents for alert triage and threat hunting in security operations | CybersecurityAI & Machine Learning | Jul 2025Series B | Page + round | |
| E2B provides a cloud platform for running artificial intelligence agents | AI & Machine LearningEnterprise Software | Jul 2025Series A | Page + round | |
| Ent provides a security platform that secures human, AI, and application activity in real time. | Cybersecurity | Jun 2026Seed | Page + round | |
| Fixify solves routine tickets start to finish inside a company's PSA, under their brand | AI & Machine LearningCybersecurity | Portfolio page | ||
| Knocknoc removes the attack surface of a company's existing infrastructure by orchestrating network level access controls | Cybersecurity | Portfolio page | ||
| Magnify provides a platform for customer success and revenue growth using AI and automation | AI & Machine LearningEnterprise Software | Portfolio page | ||
| Mallory AI connects threat intelligence to a company's environment and puts it to work across security teams to manage threats and exposures. | CybersecurityAI & Machine Learning | Portfolio page | ||
| Mantis builds living, predictive models of individual people — their physiology and behavior, forecast to the horizon where a decision still has to be made, starting with medicine. | Healthcare & Biotech | Portfolio page | ||
| Nebulock provides a cybersecurity engineering platform for threat detection and investigation | Cybersecurity | Jun 2026Series A | Page + round |
About this data
site last read 5 Nov 2026- Site
- decibel.vc
- Last read
- 5 Nov 2026
- Watching since
- 6 Nov 2026
- Rounds since
- 22 May 2025
- 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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