Guy Carpenter is a financial advisory firm which provides a wide range of services such as buy-side and sell-side, reinsurance brokerage, strategic advisory, merger and acquisitions advisory, corporate finance, risk analysis, portfolio management, and analytical advisory to the agriculture, aviation, aerospace, construction, engineering and technology sectors. The firm was founded in 1922 and is based in New York City, New York. It operates as a subsidiary of Marsh & McLennan Companies.