The SEC (U.S. securities regulator) approved limited trading of tokenized U.S. stocks through automated market makers and liquidity pools, potentially opening a regulated route for Wall Street to move parts of equity trading onchain. Tokenized stocks represent claims on traditional shares in digital form, while automated market makers use algorithmic pricing and pooled liquidity to facilitate trades. The approval is limited, and the source does not specify which stocks, platforms or trading conditions are covered.