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 operates in FinTech and is based in New York City, New York. Its latest recorded funding round was a Series A round in September 2026.
Diameter Pay is a fintech company that provides embedded payments to banks and financial institutions.
Sector
FinTech
Verticals
Digital Payments, Digital Banking, Compliance & Risk, API Management, Corporate Banking
Business Model
B2B
Customer Profile
Payment Processing Fee, Usage-Based SaaS, Subscription SaaS
AI Layer
Application
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% |
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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 |
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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 |
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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.
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Recent news
Latest coverage and updates
- is_developingSep 4, 2026
Diameter Pay develops an API that gives banks, fintechs, digital asset exchanges and their customers global access to U.S. dollar accounts and payments, with support for virtual accounts, domestic and international payments, stablecoin on- and off-ramps, and embedded compliance controls, in New York as of Sep 4th '26.
- receives_financingSep 3, 2026
On Sep 3rd '26 in New Jersey, Diameter Pay receives $10M in Series A financing co-led by CMT Digital and Lightspeed Faction, with participation from SixThirty Ventures, Stellar Development Foundation, Tech Council Ventures, Onigiri Capital and BitRock Capital, to scale its platform, expand banking partnerships and broaden geographic reach.
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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.
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Frequently 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, so its shares have no public market price. Caplight tracks Diameter Pay's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
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.
When was Diameter Pay's last funding round?
Diameter Pay's most recent funding round was Series A on September 3, 2026.
Who are the main investors in Diameter Pay?
Key investors in Diameter Pay include Faction VC, CMT Digital, 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 in Diameter Pay's shares on secondary markets.