33Across
PrivateLast Round
Series C
Jul 19, 2012
Total Funding Raised
$23.35M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
33Across is an ad-tech company that offers a publisher monetization platform to help publishers turn cookieless inventory into addressable and relevant revenue streams.
Sector
Media, Entertainment & Gaming
Verticals
Digital Advertising, Digital Publishing, Digital Identity, Marketing
Business Model
B2B
Customer Profile
Revenue Share, Data as a Service, Marketplace Commission
AI Layer
Infrastructure
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
33Across Comparables
Compare 33Across with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Sovrn Holdings, Inc. | 80% | |
| Sonobi | 79% | |
| Index Exchange | 78% | |
33Across Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series C | Jul 19, 2012 | ||||
| Series B | Jan 5, 2011 | ||||
| Series A | May 20, 2008 |
Key People
Founding team and executive leadership
33Across Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Flybridge | Series C, Series B |
| Pelion Venture Partners | Series C |
| First Round Capital | Series B, Series A, Series C |
| Greycroft | Series C |
| QED Investors | Series B, Series A |
| Panorama Capital | Series C |
Market signals
Structured signals derived from secondary market and firmographic data.
- Aug 21, 2026
Monthly visitors increased 34% MoM, reaching 48.1K.
- Jul 20, 2026
Open roles increased from 0 to 37, representing 79% of headcount.
33Across Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
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Frequently Asked Questions
Common questions about 33Across's valuation, stock price, and market status.