# Optimism

> Ethereum Layer 2 / OP Stack scaling ecosystem.

## Why it is interesting

Optimism’s OP Stack powers a superchain thesis — L2 infrastructure as shared public goods for Ethereum apps.

## Profile

- **Stage:** growth
- **Status:** private
- **Industries:** crypto-web3, infra-cloud
- **Coverage:** full
- **Last updated:** 2026-07-24

## Key facts

- Series B (Mar 2022): $150M at $1.65B co-led by a16z and Paradigm (TechCrunch)
- Series A (Feb 2021): $25M led by a16z (a16z announcement)
- Co-investor not in VCT directory: Paradigm
- Source: https://techcrunch.com/2022/03/17/paradigm-and-a16z-back-ethereum-scaling-startup-optimism-at-1-65b-valuation/
- VCT directory co-investors: none mapped (non-directory syndicates noted above); reviewed 2026-07-24

## Investors in our directory

- https://venturecapitaltracker.com/fund/andreessen-horowitz

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Source: https://venturecapitaltracker.com/startup/optimism