Manchester United PLC shares on the New York Stock Exchange fell 4% in the first fifteen minutes after opening following the news that Sir Alex Ferguson is to retire.
Starting the day with a market capitalisation of £1.997bn, the 4.05% fall equates to a loss of over £80m in value - the same figure the club received when it sold Cristiano Ronaldo to Real Madrid in 2009.
Sir Alex Ferguson's brisk way with words has influenced the way we talk about football.
A timeline of the life of outgoing Manchester United manager Sir Alex Ferguson.
A special photo gallery of Sir Alex Ferguson's career at Manchester United as he steps down from his post as manager of the club.