Morgan Stanley Prime Brokerage is a major global provider of financing, securities lending, synthetic products, custody, clearing, reporting, capital introduction, and hedge fund business support. Website or institutional source

Monarch Alternative Capital is an opportunistic-credit investment firm active across corporate credit, structured credit, real estate, government debt, and special situations. Website or institutional source

MKP Capital Management is a specialist global macro investment manager operating across interest rates, credit, currencies, commodities, equities, and derivatives. Website or institutional source

Millennium Management is a global multi-manager platform that allocates capital across fundamental equity, equity arbitrage, fixed income, commodities, quantitative, and credit strategies. Website or institutional source

MetaTrader 5 is a multi-asset trading platform developed by MetaQuotes for brokerages, banks, exchanges, hedge funds, and traders. Website or institutional source

Measurable AI provides consumer and digital-economy intelligence derived principally from permissioned e-receipt data. Website or institutional source

McKay Brothers builds purpose-designed transport infrastructure for financial markets. Website or institutional source

Maverick Capital is an established fundamental equity manager with a long history in long/short investing. Website or institutional source

MATLAB and Financial Toolbox provide a mature computational environment for investment modeling, optimization, statistics, machine learning, risk analysis, and portfolio backtesting. Website or institutional source

Marshall Wace is one of the world’s largest investment firms specializing in equity long/short strategies. Website or institutional source

Massif Capital manages a liquid real-assets strategy focused on basic materials, energy, industrial businesses, and the infrastructure underlying the modern economy. Website or institutional source

MarketAxess operates a major electronic fixed-income trading platform covering corporate bonds, emerging-market debt, municipal bonds, government bonds, and related products. Website or institutional source

Marex Prime Services provides multi-asset custody, financing, securities lending, execution, outsourced trading, technology, and capital introduction within a broader global clearing and market-infrastructure organization. Website or institutional source

Maples Group Fund Services provides administration, fiduciary, entity, regulatory, and operational support to hedge funds, private-capital funds, institutional investors, and family offices. Website or institutional source

Maple Rock Capital Partners is a concentrated long/short equity manager focused on mispriced businesses in cyclical and structurally inefficient sectors. Website or institutional source

Mantle Ridge operates in active ownership, governance engagement and public-company value creation. Website or institutional source

Man Group is a global investment manager with systematic, discretionary, and solutions capabilities. Website or institutional source

Magnetar Capital is an alternative investment firm operating across credit, fixed income, energy, systematic strategies, and opportunistic investments. Website or institutional source

Macrobond is a macroeconomic and financial-data platform used by economists, strategists, asset managers, hedge funds, banks, and public institutions. Website or institutional source

M Science is a data-driven research and analytics firm that combines dozens of alternative-data sources with sector-specialist analysis. Website or institutional source