Joel Greenblatt

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Joel Greenblatt (born December 13, 1957 in Great Neck , Long Island , NY ) is an American fund manager and adjunct professor at the Columbia University Graduate School of Business.


Greenblatt studied at the University of Pennsylvania and graduated with a Bachelor of Science and a Master of Business Administration . In 1985 he started the Gotham Capital hedge fund with $ 7 million. He launched a website where investors could have their investment ideas evaluated. The website gives away $ 5,000 in prize money every week for the best idea. In his book Die Börsen-Zauberformel he describes his investment strategy. In doing so, he filters out the best stocks using the two key figures return on investment (RoIC, Return on Invested Capital) and profit return (reciprocal of the P / E ratio or 1 / P / E ratio).,

From 1994 to 1995 Greenblatt was chairman of the supervisory board of the defense company Alliant Techsystems , whose supervisory board he remained on until 2000. Later he was also active in philanthropy, for example in the promotion of students in disadvantaged residential areas of New York.


  • Joel Greenblatt: The magic formula for the stock market. How to Beat the Market with Ease. 2nd Edition. Börsen-Medien, Kulmbach 2006, ISBN 3-938350-15-6 .
  • Joel Greenblatt: You Can Be a Stock Market Genius: Uncover the Secret Hiding Places of Stock Market Profits. 1st edition. Fireside, New York 1999, ISBN 0-684-84007-3 .

Web links

Individual evidence

  1. Ulrich W. Hanke: Attention: There really is a magic formula for stock market success!  ( Page no longer available , search in web archivesInfo: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. @1@ 2Template: Dead Link /   In: Hankes Börsen-Bibliothek. ("WirtschaftsWoche") of August 31, 2011.
  2. Susan Levermann: The relaxed way to wealth. Deutscher Taschenbuch Verlag, 2011, ISBN 978-3-423-34675-7 .
  3. ^ Robert Kolker: How Is a Hedge Fund Like a School? In: New York. February 12, 2006, ISSN  0362-4331 .