The Securities and Exchange Commission approved on Wednesday Nasdaq’s proposal to allow the trading of some stocks and exchange-traded products in tokenized forms, according to a regulatory filing. Nasdaq’s proposal, which was filed in September last year, would allow investors to trade certain high-volume stocks such as Nvidia or Tesla either as traditional shares or as tokens on the blockchain, the digital ledger technology that underpins many cryptocurrencies, all within Nasdaq’s existing exchange. Both versions would trade with the same ticker and Cusip number to ensure they are interchangeable and settle through the Depository Trust Company, which processes many stock trades.