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Evolutionary Portfolio Theory: Development and Selection, Slides of Banking and Finance

The evolution of portfolio theory in finance, from the traditional rationality hypothesis to behavioral finance and evolutionary finance. It discusses various portfolio rules, such as equal weights, capm, mean-cvar, and growth optimal, and their implications for asset allocation. The document also touches upon the underdiversification problem and the role of efficient frontier in portfolio selection.

Typology: Slides

2012/2013

Uploaded on 07/29/2013

sathyanarayana
sathyanarayana 🇮🇳

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Download Evolutionary Portfolio Theory: Development and Selection and more Slides Banking and Finance in PDF only on Docsity! Entwicklung der Portfolio Theorie:  Traditionelles Finance: Rationalitätshypothese  Behavioral Finance: Real man is unilke economic man“ „  Evolutionary Finance: Marktselektionshypothese Docsity.com Evolutionary Portfolio Theory „Survival of the Fittest at Wall Street.“ Evolutionäre Biologie als ein neues Paradigma für Finance Biologie: Finance: Strategie Portfolio Regel Ressourcen Markekapital Selektion Gewinn / Verlust Mutation Innovation Docsity.com Earnings oder Dividenden? „Earnings are an opinion, but cash is fact.“ Docsity.com Evolutionäre Finance: Asset Allokation am DJIA 2) Returns = Dividenden + Kapital Gewinne . Preise nach Angebot = Nachfrage (A b t i t f 1)nge o norm er au kiI , i t ti k t wP 1  = = λ „Der Preis der Aktie k ist der mit dem Vermögen gewichtete Durchschnitt der Strategien für Aktie k.“ Docsity.com Evolutionäre Finance: Asset Allokation am DJIA 3) Einfache Strategie: Halte die Portfolio Gewichte über die Zeit konstant. R b l i di A hl d Akti it d P i h ke a anc ere e nza er en m en re ssc wan ungen: s e ll b uy 9 6 7 8 3 4 5 0 1 2 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 Docsity.com Der Catch 22 der Mean-Variance-Analyse If not everybody does - Portfolio Selection,),( σμ then the - and the CAPM-Portfolio look quite different: underdiversified : - inefficient: ),( σμ ),( σμ Tangentialportfolio Marketportfolio Docsity.com SMI ist Mean-Variance ineffizient: Efficient Frontier SMI 99 1.2 0.8 1 0.2 0.4 0.6 M ea n -0.2 0 0 1 2 3 4 5 6 7 8 9 10 Variance SMI Docsity.com Kandidaten für die Portfolio Regel: Neu-Klassische Portfolio Theorie Koherent Risk Measures: Conditional Value at Risk G d f b k l N f f l h ?oo or an ing regu ation. ot appropriate or port o io t eory Underdiversification Problem remains. Efficient frontier CVaR(1%) 0 25 0.3 Asset allocation with CVaR(5%) 0.2 . 0.1 0.15m u 0 0.05 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 Docsity.com Behavioral Finance Portfolio Regel 1: Real man is unlike economic man “„ . Naive (illusionäre) Diversifizierung: Benartzi and Thaler (1998): Real man tends to choose equal weights. Illusionary Diversification Docsity.com Behavioral Finance Portfolio Regel 2: Real man is unlike economic man “„ . Prospect Theory (Kahneman and Tversky (1979): Loss Aversion 5 10 Probability Weightening 1 1.2 -10 -5 0 -15 -10 -5 0 5 10 15 0.4 0.6 0.8 -20 -15 0 0.2 0 0.2 0.4 0.6 0.8 1 1.2 Prospect Theory Portfolio: Docsity.com Meine Einfache Portfolio Regel:  Mean-Variance  CAPM  Mean-CVaR  Expected Dividends  Growth Optimal  Equal Weights  Prospect Theory Docsity.com Evolutionäre Portfolio Selektion auf dem DJIA M e a n + /- s ta n d a rd d e v ia tio n o f w e a lth s h a re 0 .9 1 0 .6 0 .7 0 .8 1 s te rn 1 1 /n 0 .4 0 .5 W ea lth s ha re 3 m a rk o * (p = 1 ) 4 m a rk o * (p = la ) 5 m a xg ro w th (p =1 ) 6 m a xg ro w th (p = la ) 7 C R a V (m = 0 .8 , p =1 ) 8 C R V ( 0 8 l 0 1 0 .2 0 .3 a m = . , p = a 9 P ro s p e c t Th. S te rn 1 0 m a rk o * a ll m in (p = -0 .1 0 . 0 1 0 0 2 0 0 3 0 0 4 0 0 5 0 0 6 0 0 7 0 0 8 0 0 9 0 0 1 0 0 0 P i de r o Docsity.com Evolutionäre Portfolio Selektion auf dem DJIA Wealthsharemean: equal initial wealth 0.6 0.4 0.5 1 stern 2 1/n 3 k *( 1) 0.3 mar o p= 4 marko* (p=la) 5 maxgrowth (p=1) 6 maxgrowth (p=la) 7 CRaV (m=0.8, p=1) 0.1 0.2 8 CRaV (m=0.8, p=la) 9 Prospect Th. Stern 10 marko* all min (p=la) 0 1 5 9 13 17 21 25 29 33 37 41 45 49 53 57 61 65 69 73 77 81 85 89 93 97 10 1 Docsity.com Evolutionäre Portfolio Selektion auf dem DJIA Relative asset price with noise (sample run) 0.25 0.15 0.2 ce 0 05 0.1 Pr ic 0 . 1 55 09 63 17 71 25 79 33 87 41 95 49 03 57 11 65 19 735 10 16 21 27 32 37 43 48 54 59 64 70 75 81 86 91 97 Period Docsity.com Sehr gut, jedoch... Keynes:  „In the long run we are all dead.“  „Markets can remain irrational longer than you can remain solvent.“ Question: Can performance be improved by switching strategies , i e by using non simple portfolio rules ?. - Docsity.com Beachte, dass nicht in allen Populationen am schnellsten wächst: λ M e a n o f w e a lth s h a re 0 8 0 .9 1 0 .6 0 .7 . sh ar e 1 s te rn 1 1 /n 3 m a rk o * (p = 1 ) 4 m a rk o * (p = la ) 5 th ( 1 ) 0 .3 0 .4 0 .5 W ea lth s m a xg ro w p = 6 m a xg ro w th (p = la ) 7 C R a V (m = 0 .8 , p = 1 ) 8 C R a V (m = 0 .8 , p = la ) 9 P ro s p e c t Th. S te rn 1 0 m a rk o * a ll m in (p = la ) s 0 0 .1 0 .2 0 40 80 12 0 16 0 20 0 24 0 28 0 32 0 36 0 40 0 44 0 48 0 52 0 56 0 60 0 64 0 68 0 72 0 76 0 80 0 84 0 88 0 92 0 96 0 10 00 P e rio d Docsity.com Zuerst wächst Prospect schneller als * λ M kt i ik “„ ar r s o: Die rationale Strategie trägt das Risiko, Beste Antwort: Wähle eine in der Zeit variable Strategie! dass es zu viele irrationale Investoren am Markt gibt. S i l P k h i d d h l * λp e e zuerst rospe tt eor e un ann wec s e zu . Docsity.com Wechselnde Marktanomalien * Beispiel: Januareffekt Dezembereffekt ——___--. etc Docsity.com Esher University of Zurich Institute for Empirical Research in Economics Docsity.com Catch 22 der Behavioral Strategien: You try to exploit the behaviour of others. But they try to exploit the behaviour of you! Lösung: Nash Gleichgewicht! Evstigneev, Hens, Schenk-Hoppe (2002b): Nur ist ein evolutionär-stabiles Nash Gleichgewicht!*λ Docsity.com
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