MarketplaceVC-backedSeries C
New York, United States · Founded 2017
OpenSea
The world's first and largest NFT marketplace.
About OpenSea
Ethereum, Polygon, and multi-chain NFT trading platform. Peaked at $14B valuation in 2022; rebuilt as OS2 in 2025.
Company facts
- Category
- Marketplace
- Funding stage
- Series C
- Total raised
- $427M+
- Founded
- 2017
- Team size
- 201-500
- HQ
- New York
- Country
- United States
- Website
- opensea.io
Founders of OpenSea
- Devin Finzer
- Alex Atallah
Investors backing OpenSea
- Andreessen Horowitz
- Coatue
- Paradigm
Frequently asked questions
What does OpenSea do?
Ethereum, Polygon, and multi-chain NFT trading platform. Peaked at $14B valuation in 2022; rebuilt as OS2 in 2025.
Where is OpenSea based?
OpenSea is based in New York, United States.
When was OpenSea founded?
OpenSea was founded in 2017.
How much has OpenSea raised?
OpenSea has raised $427M+ in their Series C round.
Who founded OpenSea?
OpenSea was founded by Devin Finzer, Alex Atallah.
Who has invested in OpenSea?
OpenSea is backed by Andreessen Horowitz, Coatue, Paradigm.