Citadel Securities purchased a 2-year U.S. Treasury note through Tradeweb, which BNY recorded as a tokenized asset on its private ledger and Citadel then pledged as collateral in an overnight triparty repo to receive cash.

From the articleBNY, Citadel put tokenized Treasury through triparty repo on major platform - CryptopolitanAlso in BNY, Citadel Securities complete tokenized Treasury transaction with near-instant settlement, BNY Completes First Tokenized Treasury Repo Workflow With Citadel, BNY settles a treasury repo in minutes with Citadel Securities - A tokenization first - AMBCrypto, BNY, Citadel Securities complete Treasury repo in first use of tokenized assets on major triparty platform, BNY uses tokenized US Treasury in landmark Citadel Securities repo deal