Harmonic
PrivateLast Round
Series C
Nov 25, 2025
Est. Valuation
$1.45B
Total Funding Raised
$295M
Momentum
Top 25%
of companies Caplight tracks
Company Overview
Harmonic is an artificial intelligence company that develops a mathematical reasoning engine utilizing artificial intelligence to deliver verifiably correct outputs.
Sector
AI, Data & Cloud Infrastructure
Verticals
ML Platforms, Synthetic Data
Business Model
B2B
Customer Profile
Usage-Based SaaS, Freemium, Subscription SaaS, Government Contracts
AI Layer
Foundation
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Harmonic Comparables
Compare Harmonic with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Axiom Math | 79% | |
| Logical Intelligence | 73% | |
| Principia Labs | 72% |
Harmonic Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series C | Nov 25, 2025 | ||||
| Series B | Jul 10, 2025 | ||||
| Series A | Sep 23, 2024 |
Harmonic Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Sequoia Capital | Series C |
| Emerson Collective | Series C |
| Index Ventures | Series C |
| Ribbit Capital | Series C |
| Kleiner Perkins | Series C |
Market signals
Structured signals derived from secondary market and firmographic data.
- Jul 28, 2026
Grew 20% QoQ, from 41 to 49 employees.
- Mar 18, 2026
Launched Aristotle Agent, an 'autonomous mathematician', with Robinhood CEO endorsement.
Harmonic Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
Request accessFrequently Asked Questions
Common questions about Harmonic's valuation, stock price, and market status.
Is Harmonic a public or private company?
Harmonic is a private company.
What is the current stock price of Harmonic?
Harmonic is a private company with no public stock price. No recent secondary market data is available.
How much is Harmonic worth (valuation)?
Harmonic's valuation is estimated at $1.4B based on funding round data.
Can I buy Harmonic stock?
Harmonic shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors. Visit https://www.caplight.com to learn more.
When was Harmonic's last funding round?
Harmonic's most recent funding round was Series C on November 25, 2025.
Who are the main investors in Harmonic?
Key investors in Harmonic include Sequoia Capital, Ribbit Capital, Kleiner Perkins.
Will Harmonic IPO soon?
No public IPO plans have been announced for Harmonic.
How can I track Harmonic secondary market activity?
Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Harmonic's secondary market activity and sign up for updates.