Mr. Market

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DEFINITION of 'Mr. Market '

An imaginary investor devised by Benjamin Graham and introduced in his 1949 book "The Intelligent Investor". In the book, Mr. Market is a hypothetical investor who is driven by panic, euphoria and apathy (on any given day), and approaches his investing as a reaction to his mood, rather than through fundamental (or technical) analysis.

BREAKING DOWN 'Mr. Market '

Investor and author Benjamin Graham invented Mr. Market as a clever means of illustrating the need for investors to make rational decisions in regard to their investment activities instead of allowing emotions to play a deciding role. Mr. Market teaches that although prices fluctuate, it is important to look at the big picture (fundamentals) rather than reacting to temporary emotional responses. Graham is also well-known for his most successful student, multibillion-dollar value investor Warren Buffett.

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