Akbar Sheriff has joined Coremont, the UK-based fintech, as COO. Coremont, which was spun off from Brevan Howard in 2018, provides portfolio management technology and support across all investment management and trading functions. Its flagship software, Clarion, provides risk analytics and data across all asset classes, including rates, fixed income, credit, FX, equities, commodities and, most recently, cryptocurrencies. Sheriff previously spent nine years with State Street.