Marsh McLennan is one of Alleghany's top competitors. Marsh McLennan was founded in 1871 in New York, New York. Like Alleghany, Marsh McLennan also operates in the Insurance Brokers industry. Marsh McLennan generates $11.8B more revenue than Alleghany.
Progressive is a top competitor of Alleghany. Progressive was founded in 1937, and is headquartered in Mayfield Village, Ohio. Like Alleghany, Progressive also competes in the Banking, Financial Services and Insurance field. Progressive generates $63.1B more revenue vs. Alleghany.