The tokenization of U.S. stocks has finally seen the SEC move from “all talk, no action” to “taking action with conditions.” The September 17 document drew a red line for five years of on-chain U.S. stock trading.

The biggest change is the recognition of AMMs’ legitimacy in securities trading. Although it comes with the qualifier “permissioned,” this is still a huge step forward compared with previously forcing on-chain protocols to transform themselves into traditional order books. Smart contracts must be publicly auditable, the ledger must be on a public chain, but participants must undergo KYC. This “half-open door” is precisely the maximum level regulators can currently accept.
But the bar is extremely high. First, the assets must be tokenized real stocks, complete with dividends and voting rights. The synthetic tokens thriving overseas were explicitly excluded this time by Atkins. Second, the issuer has the final say: if it does not approve, you cannot force the asset to be listed.
On the data front, the SEC is demanding extremely granular information this time. Prices, quantities, pool addresses, and end-of-day balances must all be reported. The five-year observation period is essentially regulators collecting samples. After all, Nasdaq and the NYSE are also set to begin tokenization within their own systems in 2026. The SEC is worried that crypto-native platforms will be left behind, so it is granting them an early-access slot.
My personal feeling is that this is bullish for infrastructure, especially protocols like Uniswap v4 that support customizable hooks. But for users, it will not actually become available that quickly.
As Peirce said, if the rules are still rigidly imposed according to the logic of the old market, the room for innovation will be very limited. Five years is not a short time. If liquidity is blocked during that period by issuers with veto power, this “compliance door” may ultimately be nothing more than a facade. Still, having a door is better than having none.