OpenSea argues NFTs shouldn’t be regulated as securities because they’re unique, personal items rather than investment vehicles.OpenSea positions itself as a marketplace like eBay, not a securities exchange, stating trades execute outside their platform.OpenSea urges the SEC to exclude NFT marketplaces from regulation under federal securities laws.OpenSea's letter could be part of building a public record and clarifying its non-securities framework in case of future litigations or lobbying.