In the competitive world of non-fungible tokens (NFTs), OpenSea has emerged as a market leader. The company’s newly launched OS2 platform, along with strategic marketing campaigns, propelled it to the top spot in the NFT marketplace share during May 2025. Data from nftpulse.org indicates that OpenSea held over 70% of the total market share, fueled by its expanded functionality and high trading volume. OS2’s introduction allows for cross-chain token trading on 19 networks, including support for fungible tokens on Solana. The platform has also incorporated new NFT tools aimed at enhancing cross-chain functionality, signaling a broader shift from NFTs to the wider crypto market.