Citadel Securities-backed brokerage firm Hidden Road announced that it has added several major exchanges to its Tier 1 brokerage platform and expanded the use of BlackRock's BUIDL token to accept it as collateral within the network. On Monday, Hidden Road issued a press release announcing that it has integrated with several institutions, including Coinbase International Exchange, OKX, Deribit, Bitfinex, Bullish, AsiaNext, and SIX Digital Exchange. In addition, due to its partnership with the Chicago Mercantile Exchange (CME), Hidden Road can also conduct cross-margin and margin financing on digital asset tokens such as BUIDL on the CME.