Diameter Pay
PrivateLast Round
Series A
Sep 3, 2026
Total Funding Raised
$14.89M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
Diameter Pay is a fintech company that provides embedded payments to banks and financial institutions.
Sector
FinTech
Verticals
Digital Payments, RegTech, Corporate Banking, Foreign Exchange
Business Model
B2B
Customer Profile
Payment Processing Fee, Usage-Based SaaS, Subscription SaaS
AI Layer
Application
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Diameter Pay Comparables
Compare Diameter Pay with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Routefusion | 86% | |
| PayAll | 84% | |
| Visa Inc. | 78% |
Diameter Pay Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series A | Sep 3, 2026 | ||||
| Grant | Jan 1, 2023 | ||||
| Pre Seed | Feb 11, 2019 | ||||
| Accelerator | Sep 10, 2018 | ||||
| Grant | Aug 1, 2018 |
Diameter Pay Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Faction VC | Series A |
| Stellar Development Foundation | Series A |
| Mastercard Foundation | Pre Seed |
| Techstars | Pre Seed, Accelerator |
| SixThirty Ventures | Series A |
| BitRock Capital | Series A |
| Tech Council Ventures | Series A |
Market signals
Structured signals derived from secondary market and firmographic data.
- Sep 3, 2026
$10M round led by CMT Digital and Lightspeed Faction.
- Oct 27, 2024
Monthly visitors grew 422% MoM, reaching 674.
Recent news
Latest coverage and updates
- is_developingSep 4, 2026
Diameter Pay is developing API on Sep 4th '26.
- receives_financingSep 3, 2026
Diameter Pay received financing of $10M in Series A on Sep 3rd '26.
Diameter Pay 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 Diameter Pay's valuation, stock price, and market status.
Is Diameter Pay a public or private company?
Diameter Pay is a private company.
What is the current stock price of Diameter Pay?
Diameter Pay is a private company with no public stock price. No recent secondary market data is available.
How much is Diameter Pay worth (valuation)?
Valuation information for Diameter Pay is not publicly available.
Can I buy Diameter Pay stock?
Diameter Pay 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 Diameter Pay's last funding round?
Diameter Pay's most recent funding round was Grant on January 1, 2023.
Who are the main investors in Diameter Pay?
Key investors in Diameter Pay include MIT Media Lab.
Will Diameter Pay IPO soon?
No public IPO plans have been announced for Diameter Pay.
How can I track Diameter Pay secondary market activity?
Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Diameter Pay's secondary market activity and sign up for updates.