BNY and Citadel Securities Complete First Tokenized US Treasury Triparty Repo, Settled in Minutes

First Tokenized Collateral on Triparty Rails

BNY and Citadel Securities completed a short-term financing transaction on Tuesday that used a tokenized U.S. Treasury as collateral, and the custody bank described it as the first use of tokenized assets across a major dealer's triparty repurchase agreement, or repo, infrastructure. The workflow set out in BNY's announcement ran end to end: Citadel Securities bought a two-year Treasury note on the TradeWeb trading platform, the bond was recorded as a tokenized security on BNY's private digital ledger, and it settled within minutes of execution rather than on the standard T+1 cycle, under which trades finalize the following business day. Citadel Securities then pledged the tokenized note as collateral in an overnight triparty repo, with BNY providing cash against it.

Triparty repo is a funding structure in which a third-party bank manages collateral between borrowers and lenders, a cousin of margin trading at institutional scale, with loans extended against securities posted as collateral. It is one of the deepest channels in the United States funding market, since trading firms and banks pledge government bonds to secure short-term loans. Bonds moving between accounts and settlement systems take time to arrive, leaving assets idle that could otherwise back fresh borrowing, and banks and trading houses rely on this market daily to fund positions, so a security is only useful once it sits where it is needed. BNY said the trade answers demand from participants for faster, more efficient collateral movement, and Brian Ruane, the bank's global head of settlement and collateral management, said the infrastructure supporting liquidity, funding and collateral must keep pace as Treasury trading grows more continuous.

From Settlement into Financing

BNY, the world's largest custody bank, presented the transaction as a bridge between traditional market infrastructure and digital markets that operate for longer hours. Tokenization, the recording of traditional assets as digital tokens on shared ledgers, has so far concentrated on issuance and settlement: BlackRock, Franklin Templeton and JPMorgan have already put tokenized funds and securities to work, wagering that ledger-based records cut settlement times and simplify asset movement. The BNY and Citadel Securities transaction pushes the same logic into collateral and financing, the deepest and least visible layer of institutional funding markets. Carolyn Weinberg, BNY's chief innovation and market transformation officer, said the ability to put a single tokenized Treasury to work across both settlement and financing points toward a financial system that is more connected and runs around the clock. Dan Doherty, who leads digital assets operations at Citadel Securities, said “efficient movement of high-quality collateral is fundamental to well-functioning markets,” describing the trade as practical proof that tokenized government bonds can shift from settlement into financing. The bank's roadmap follows from the trade: digital cash and tokenized deposit capabilities are planned to support blockchain-based settlement and financing, functions adjacent to the on-chain payments activity the payfi sector targets. Settlement systems for Federal Reserve-eligible securities and U.S. triparty transactions are also expected to run longer hours, with European and Asian trading windows on the roadmap for next year. That extension would matter for collateral desks outside United States time zones, which today wait for American windows to pledge or recall securities. BNY's ledger in this workflow is private rather than a public layer 1 blockchain protocol, so the demonstration ran on permissioned rails even as parts of the industry test open networks for tokenized stocks and funds.

Collateral Speed Is the Measurable Test

Our reading: the number that matters here is minutes, not the headline first. Settlement speed decides how quickly collateral can be reused; a note that clears within minutes can be pledged again the same session, freeing cash and balance sheet that a T+1 cycle would lock up overnight. The scope deserves equal attention: this was a demonstration between two named counterparties on BNY's own permissioned ledger, and neither the transaction size nor a timetable for making the workflow routine in triparty markets has been disclosed. The milestone to track is BNY's plan to run settlement into European and Asian hours next year; that extension, more than the single trade, will show whether tokenized collateral becomes routine plumbing.