CAC40 2007 -2010 seddiki.safia@univ-ouargla.dz souici.ho@univ-ouargla.dz Zergoune.me@univ-ouargla.dzBuilding financial portfolio within behavioral finance
An application to the companies listed on the CAC40 of Paris stock exchange for the period of 2007- 2010
Safia SEDDIKI & Houari SOUICI & Mohamed ZERGOUNE University of Kasdi Merbah, Ouargla –Algeria
Received:10 Jan 2015 Accepted: 13 Apr 2015 Published: 30 June 2015
: 2002 (BPT) (MPT) jel G11, G02 Abstract:
Behavioral finance has known a remarkable development since the eighties of the last century. It was recognized as a new research trend after the psychologist Daniel Kahneman has been awarded the Nobel Prize for Economics in 2002.
The researches in this field have included several aspects, the most important one is building financial portfolio.
Our aim here is to provide a definition of behavioral finance and its most important findings in order to understand its increasing prevalence, and then we will try to identify the main contribution of this new trend in the area of financial portfolio building.
Keywords:Behavioral finance, rationality, behavioral portfolio theory, modern portfolio theory,
standard finance 1952 1
(Modern Portfolio Theory) (MPT) . ) 1958 ( MEDAF 2 1964 ) 1973 ( 1965 (Expected Utility) 1944 homo oeconomicus 3
4 5 1953 6 l’hypothèse d’efficience des marchés HEM 7 8 9 10 11 (anomalies) 2004 12 13 MEDAF 14 1 (les anomalies saisonnières)
2 (l’effet petite firme/l’effet taille)
(small caps)
3 (l’effet momentum) 15 4 3 1986 16 5 (IPO) 17 1986 18 6 (l’excès de volatilité) 1981 / 1984 19 20 21 22 23 24 25 1999 26 27 28 29 30 1 31 (Noise traders) (NT) 32 2 3 3 34 35 36 (le biais)
2 (heuristics/Généralisation heuristique) 38 3 (Disposition effect) 39 40 4
(Herd instinct/ le comportement moutonnier)
41 (Behavioral Portfolio Theory) (BPT)
(safety first) 1952 1952 42 SP/A 1987 (prospect theory) 1979 1948 (lottery tickets) 43 1 ) 1952 Roy , (
W 4 4 (subsistence level) S 1955
1 (overconfidence/l’excès de confiance) 37 α α E(W) 45 Max (E(w))
s.c P(w< s) ≤ α 1977 α (E(w), α)
U(w) U(w) = w si prob{ w ≤ s} ≤ α U(w) = w-c si prob{ w ≤ s} ≥ α c α 2 SP/A
1987 Lopes , 1979 S
(security) A
(aspiration) P
(potential) prob{ w ≥ s}
D (x) = prob{ w ≥ x} n Pi Pi = prob{ wi } i=1 ,……n
wn > …. > w2 > w1 E(w) P1 E(w) P1 Pn D
D P h : h(D) : [ 0 , 1 ] 46 3 (BPT) )Shefrin & Statman , 2000 ( SP/A (Mental Accounting)
(BPT-SA) (Single Account) (BPT-MA) (Multiple Accounts).
1.3 (BPT-SA) BPT-SA 47 23 (BPT-MA)
A A BPT-MA
99.9 48 2000 2000 (la lotterie) 49
(Swedish Lottery Bonds)
A
50
51 - CAC40 2007 2010 52
01 / 01 / 2007 31 / 12 / 2008
01 / 01 / 2009 31 / 12 / 2010 CAC40 2007 2010 36 ) 01 ( ) 02 ( ) 03 ( 2009 -2010 ) 03 ( 2007 -2008 UNIBAIL-RODAMCO RENAULT FRANCE TELECOM GDF SUEZ CREDIT AGRICOLE