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Companies / pubX

pubX

London, United Kingdom

pubX builds agent-to-agent infrastructure for advertising

pubX, based in London, United Kingdom, has 2 investors on file, among them Chicago Ventures and Haatch. Its latest round on record is Series A, 6 Oct 2026. Its site was last checked 13 Nov 2026: site answers.

Funding

1 round on record
Latest roundSeries A6 Oct 2026
Since that round1 monthno later round on record
Investors in its rounds11 with a VCinfo profile
Oct 2026Series ALed by Chicago Ventures

Round sizes and total raised are on Fundup AI, our sister product for funding data.

Investors

2 investors on file
InvestorEvidenceType
Chicago VenturesPortfolio pageVenture capital
HaatchPortfolio pageVenture capital

More from Chicago Ventures

9 companies on its checked portfolio

Its portfolio leans to Fintech (20%), Education (13%), Real Estate & Construction (13%).

See Chicago Ventures' full profile · Who invests alongside it

More from Haatch

186 companies on its checked portfolio

Its portfolio leans to AI & Machine Learning (21%), Fintech (15%), Enterprise Software (10%).

See Haatch's full profile · Who invests alongside it

A company is shown only after its own site answers and carries its name. Sites are checked again on a schedule, because domains lapse and get bought. Round stages and dates come from Fundup AI; investor links come from portfolio pages and rounds; other facts name their source when you point at them. How we grade the data

Free account · no card

Get pubX and its investors as data

Look up any company's investors, or any investor's full portfolio, through one API key or MCP. A free account also opens Ask AI searches and alerts when Chicago Ventures adds a company.

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  • Ask AI5 plain-English investor searches a day
  • Full listsEvery portfolio row and two-firm overlap
  • API and MCP100 REST or MCP calls a month, one key
  • AlertsFollow 5 investors for portfolio and fund changes
VCinfo API
$ curl -H "X-API-Key: YOUR_KEY" \
  https://api.vcinfo.io/v1/companies/pubx.ai/investors

# also
GET /v1/companies/pubx.ai
GET /v1/companies/pubx.ai/news
The same data as an MCP server for Claude, Cursor and other AI tools. Set up MCP · Docs · Pricing