SEC Custody Rule Opens a Self-Custody Path as Tokenized Stock Volume Outpaces Supply

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SEC Custody Rule Opens a Self-Custody Path as Tokenized Stock Volume Outpaces Supply

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Aurellix
October 4, 2026
1 min read

Today’s Focus
Regulation and data move in parallel. The SEC’s 760-page custody proposal clears a compliant path for institutions to hold digital assets, allowing self-custody and state trust custodians, while the ECB outlined three models for putting central bank money onchain and the CFTC recognized tokenized assets as customer funds. On-chain data, however, shows a caution flag: tokenized stock DEX volume surged to $48.7B in a year while distributed supply stands at only $3.2B.

Industry Flash

10 items

  • SEC Proposes 760-Page Crypto Custody Rule, Allowing Self-Custody and State Trust Custodians — The proposal builds a custody framework for advisers and regulated funds, permitting self-custody when firms have crypto expertise and no qualified third-party custodian is available; released Oct 1 and now in a 60-day comment window.
  • SEC Wants Blockchains to Serve as Official Ownership Records for Tokenized Stocks — An on-chain ledger could act as the master securityholder file, cutting reconciliation and bankruptcy title disputes, though transfer agents still keep their control book and transfer log.
  • Tokenized Stock DEX Volume Jumps to $48.7B in a Year While Distributed Value Sits at $3.2B — Up 10,163.7% year over year with Uniswap leading at $17.1B, but in-flight supply is under 7% of volume, with turnover concentrated in a few names like QQQb.
  • XRPL Net Inflows Reach $1.1B Over 30 Days, Overtaking Ethereum — RWA.xyz shows XRPL leading major chains while Solana and Base see outflows, driven by payments, tokenization, and settlement use cases.
  • ECB Sets Out Three Models for Tokenizing Central Bank Money — Schnabel presented direct tokenization, connecting through an interoperability layer, and fully tokenized reserves at the Bank of England’s conference; a Lloyds survey shows 71% of institutions expect tokenization to reshape finance.
  • On-Chain RWA Market Cap Reaches $38.55B With Over 5.01 Million Holders — RWA.xyz data as of Oct 2 shows market cap down 0.94% month over month while holder count jumped 51.6%, signaling faster new-user entry.
  • SEC Reportedly Revising KYC So One Authentication Unlocks Tokenized Securities — The move would support composability across venues and platforms, letting users split orders across multiple venues via zero-knowledge identity systems.
  • CFTC Allows Tokenized Assets to Count Toward Customer Funds Compliance — An updated FAQ lets registered derivatives firms treat tokenized money-market fund shares like traditional assets and does not object to blockchain-based recordkeeping.
  • 21X Group Partners With Circle as a Day-One Launch Partner on Arc — With USDC as gas on the Arc L1, the pair tests tokenized security atomic settlement across the EU and US, settling individual trades in under a second.
  • Tokenized Treasury Sizes Diverge: BUIDL at $2.25B, USYC at $2.4B — Per rwa.xyz as of Oct 2, BUIDL fell 18.49% to $2.25B while Circle’s USYC reached $2.4B, with most assets sitting on BNB Chain.
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