Here are the top 5 papers downloaded from the SSRN eLibrary for the week ending June 19, 2009:

1. Betas Used by Companies and Professors in Europe: A Survey
by Pablo Fernandez (University of Navarra – IESE Business School) and Vicente J. Bermejo (University of Navarra – IESE Business School)

2. A Quantitative Approach to Tactical Asset Allocation
by Mebane T. Faber (Cambria Investment Management)

3. Case Closed
by Robert A. Haugen (Haugen Custom Financial Systems) and Nardin L. Baker (University of California, Irvine – Paul Merage School of Business)

4. The Black-Litterman Approach: Original Model and Extensions
by Attilio Meucci (Bloomberg ALPHA, Portfolio Analytics and Risk)

5. The Curse of the First-Mover: When Incremental Innovation Leads to Radical Change
by Thierry Rayna (London Metropolitan Business School) and Ludmila Striukova (University College London)