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A financial fraud detection indicator for investors: an IDeA

Bernard, Philippe; El Mekkaoui-De Freitas, Najat; Maillet, B. B. (2019), A financial fraud detection indicator for investors: an IDeA, Annals of Operations Research, 313, p. 809–832. 10.1007/s10479-019-03360-6

Type
Article accepté pour publication ou publié
Date
2019
Journal name
Annals of Operations Research
Number
313
Publisher
Springer
Pages
809–832
Publication identifier
10.1007/s10479-019-03360-6
Metadata
Show full item record
Author(s)
Bernard, Philippe
El Mekkaoui-De Freitas, Najat
Maillet, B. B.
Abstract (EN)
Fraud detection is a key issue for investors and financial authorities. The Ponzi scheme organized by Bernard Madoff is a magnified example of a financial fraud, always possible when well-orchestrated. Traditional methods to detect fraud require costly and lengthy investigations that involve complex financial and legal knowledge, as well as highly skilledanalysts. Based on the motto “too good to be true” that should be adopted by any rational investor, we propose herein the use of a robust performance measure (named GUN*) to construct an Index for detection of anomalies (called IDeA). This index is based on the basic intuition that it is not possible to properly evaluate a fund as “good” regardless the characteristics and risk aversion of investors. After defining the intuition behind such an index and its economic theoretical background, we illustrate our innovative operations research methodology for fraud detection and demonstrate its usefulness studying the emblematic case of the fraud by Madoff.
Subjects / Keywords
Performance measurement; Fraud detection; Robust statistics; Hedge funds
JEL
G24 - Investment Banking; Venture Capital; Brokerage; Ratings and Ratings Agencies

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