Arbitrum

Company

Arbitrum has 8 investors on file, among them Compound, Delphi Ventures and Diffusion Capital. Its site turns away automated reads, so VCinfo could not check it; it is listed because an investor's own portfolio page links to it.

arbitrum.io

Investors

8 investors on file

Investor	Evidence	Type
Compound	Portfolio page	Venture capital
Delphi Ventures	Portfolio page	Venture capital
Diffusion Capital	Portfolio page	Investor
eGirl Capital	Portfolio page	Venture capital
Mechanism Capital	Portfolio page	Venture capital
Pantera Capital	Portfolio page	Venture capital
ParaFi Capital	Portfolio page	Venture capital
Standard Crypto	Portfolio page	Venture capital

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

At a glance

Investors on file: 8
Founded: 2021
Site: Could not be checked
Last checked: 12 Nov 2026

Also from Wikidata.

Backed by the same investors

Companies sharing two or more investors with Arbitrum.

Morpho3 shared

Offchain Labs3 shared

PleasrDAO3 shared

Starkware3 shared

Abra2 shared

Allora2 shared

Get this company as JSON

GET /v1/companies/arbitrum.io
GET /v1/companies/arbitrum.io/investors
GET /v1/companies/arbitrum.io/news

API docs · Get a free key · Your API key

Raising a round?

See which investors fit your startup, ranked by what they actually back.

Check investor fit

Free account · no card

Get Arbitrum 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 Compound adds a company.

Work email, sign-in link by email. Already have an account? Log in

Your API key Read the docs

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/arbitrum.io/investors

# also
GET /v1/companies/arbitrum.io
GET /v1/companies/arbitrum.io/news

The same data as an MCP server for Claude, Cursor and other AI tools. Set up MCP · Docs · Pricing