Nasdaq, the U.S. exchange where the tech sector's biggest names list their stocks, is seeking to put stocks on the blockchain, asking the U.S. Securities and Exchange Commission on Monday to bless its effort even as others in the securities world are sprinting toward the same tokenization goal. If the SEC filing is approved, the exchange would let customers choose either the traditional route for trading equities or to do so on-chain with tokenized stocks — an option that would be treated with the same pr ...