Douro Labs submitted a request to the US Securities and Exchange Commission (SEC) on October 9, seeking provider-neutral principles to assess external price feeds for tokenized stocks. This comes after the SEC's September exemption allowed tokenized stocks to trade on venues that can operate outside key Regulation NMS protections, making it crucial for investors to understand how orders are priced and handled. FINRA-member brokers retain applicable best-execution duties for covered customer transactions.