Aster has integrated bStock as collateral for perpetual contract trading on BNB Chain, launching with initial support for four assets. The update expands the range of collateral options available to traders using the decentralized derivatives platform. The integration allows traders on Aster to post bStock tokens as margin when opening perpetual contract positions. bStocks are tokenized representations of traditional equities that operate natively on BNB Chain, offering 24/7 trading with zero fees and full self-custody.