(Bloomberg/Katherine Doherty) — Nasdaq Inc. is asking regulators to let investors trade tokenized versions of stocks on its exchange, a move that could mark the first big test of blockchain technology inside the core of America’s equity markets.

The exchange operator is seeking approval from the US Securities and Exchange Commission to amend certain rules, including the definition of a security, that would allow stocks to be tokenized and traded on regulated venues like Nasdaq, according to a filing Monday. Any changes would have to be approved by the SEC and need to go through a comment period before implementation.

Nasdaq detailed ways it would trade tokenized securities in the filing seen by Bloomberg. The firm suggests shares of a tokenized security should trade on Nasdaq and other e

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