# Cross-Chain Liquidity

In the realm of on-chain leveraged trading, users and liquidity are often spread across different chains. To provide seamless trading experiences for users on different chains, the Alpaca Aggregator leverages the Universal Liquidity mechanism of the Alpaca protocol to enable cross-chain liquidity aggregation.&#x20;

If a user opens a position on Chain A, the broker module can utilize the Alpaca Aggregator to open the position on an underlying protocol of Chain B. This means that the user can access the liquidity on Chain B for leveraged trading without having to directly interact with Chain B.
