OpenSea is a leading onchain NFT and token trading marketplace, co-founded by Devin Finzer and Alex Atallah in December 2017 as a peer-to-peer NFT marketplace on Ethereum, originally inspired by CryptoKitties. OpenSea's Twitter Score is 845 out of 1000 (an Excellent rating) as of July 2026, ranking it #49 out of 389,613 crypto accounts tracked on this platform, with 2,250,644 followers and 26,824 posts published. OpenSea ranks #49 (top 0.1%) out of 389,000+ tracked accounts on TwitterScore.
OpenSea previously participated in the Y Combinator W18 accelerator and raised a $2M seed round in May 2018 from backers including Founders Fund, 1confirmation, Foundation Capital, Blockchain Capital, and Coinbase Ventures. It went on to raise a $300 million Series C in January 2022 at a $13.3 billion valuation, co-led by Paradigm and Coatue, bringing total funding to approximately $427 million; backers also include Andreessen Horowitz. In February 2022, OpenSea launched OpenSea Ventures, an investment arm focused on Web3, NFTs, and decentralized systems, initially led by co-founder Alex Atallah. OpenSea laid off approximately 20% of its staff in July 2022 as NFT trading volumes declined sharply from their 2022 peak.
OpenSea launched OS2, a platform overhaul in 2025 enabling token trading and NFTs across 20+ blockchains, processing $1.6 billion in cryptocurrency trades and $230 million in NFT transactions in the first two weeks of October 2025. OpenSea acquired Rally, a Web3 wallet and trading app, in July 2025. OpenSea received an SEC Wells notice in August 2024 alleging it operated as an unregistered securities marketplace; the SEC closed the investigation in February 2025. OpenSea announced plans for a SEA token with 50% of supply allocated to the community, targeting a Q1 2026 launch, but delayed the launch in March 2026 citing challenging market conditions, with no token launched as of June 2026. OpenSea has been mentioned by 6,674 accounts, with 46,973 total mentions across the platform.
OpenSea's associated portfolio includes Dharma, Rally, OpenSea Pro and Pixels.
Who follows OpenSea on X?
OpenSea's Twitter following includes participants from across the crypto industry. The accounts that follow OpenSea include 2,530 founders, 438 angel investors, 2,716 influencers and 172 VCs, among them Chris Dixon, Erik Voorhees, Laura Shin, Toly, Solana and Ansem.