Allvue Systems (formerly known as Black Mountain Systems) is a company that provides AI-powered alternative investment software services. Its products include Nexius, a platform for API-driven data management solutions, and Octaura, an electronic loan trading platform that enables liquidity and execution strategies for financial institutions. The company offers accounting, portfolio monitoring, data collection, compliance, fund financing solutions, etc. Allvue Systems caters to banking, private equity, insurance, venture capital, and other sectors.