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statistique, théorie et gestion de portefeuille - Docs at ISFA

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9.2. Estim<strong>at</strong>ion du coefficient <strong>de</strong> dépendance <strong>de</strong> queue 329<br />

July 1962 - December 1979 January 1980 - December 2000 July 1962 - December 2000<br />

Mean Std. Skew. Kurt. Mean Std. Skew. Kurt. Mean Std. Skew. Kurt.<br />

Abbott Labs 0.6677 0.0154 0.2235 2.192 0.9217 0.0174 -0.0434 2.248 0.8066 0.0165 0.0570 2.300<br />

American Home Products Corp. 0.4755 0.0136 0.2985 3.632 0.8486 0.0166 0.1007 8.519 0.6803 0.0154 0.1717 7.557<br />

Boeing Co. 0.8460 0.0228 0.6753 4.629 0.7752 0.0193 0.1311 4.785 0.8068 0.0209 0.4495 4.901<br />

Bristol-Myers Squibb Co. 0.5342 0.0152 -0.0811 2.808 0.9353 0.0175 -0.3437 16.733 0.7546 0.0165 -0.2485 12.573<br />

Chevron Corp. 0.4916 0.0134 0.2144 2.442 0.6693 0.0169 0.0491 4.355 0.5885 0.0154 0.1033 4.209<br />

Du Pont (E.I.) <strong>de</strong> Nemours & Co. 0.2193 0.0126 0.3493 2.754 0.6792 0.0172 -0.1021 4.731 0.4715 0.0153 0.0231 4.937<br />

Disney (Walt) Co. 0.9272 0.0215 0.2420 2.762 0.8759 0.0195 -0.6661 17.655 0.8997 0.0204 -0.1881 9.568<br />

General Motors Corp. 0.3547 0.0126 0.4138 4.302 0.5338 0.0183 -0.0128 5.373 0.4538 0.0160 0.0872 6.164<br />

Hewl<strong>et</strong>t-Packard Co. 0.7823 0.0199 0.0212 3.063 0.8913 0.0238 0.0254 4.921 0.8420 0.0221 0.0256 4.624<br />

Coca-Cola Co. 0.4829 0.0138 0.0342 5.436 0.9674 0.0170 -0.1012 14.377 0.7483 0.0157 -0.0513 12.611<br />

Minnesota Mining & MFG Co. 0.3459 0.0139 0.3016 2.997 0.6885 0.0150 -0.7861 20.609 0.5333 0.0145 -0.3550 14.066<br />

Philip Morris Cos Inc. 0.7930 0.0153 0.2751 2.799 0.9664 0.0180 -0.2602 10.954 0.8863 0.0169 -0.0784 8.790<br />

Pepsico Inc. 0.4982 0.0147 0.2380 2.867 0.9443 0.0180 0.1372 4.594 0.7431 0.0166 0.1786 4.413<br />

Procter & Gamble Co. 0.3569 0.0115 0.3911 4.343 0.7916 0.0164 -1.6610 46.916 0.5947 0.0144 -1.2408 44.363<br />

Pharmacia Corp. 0.3801 0.0145 0.2699 3.508 0.9027 0.0191 -0.6133 13.587 0.6666 0.0172 -0.3773 12.378<br />

Schering-Plough Corp. 0.6328 0.0163 0.2619 3.112 1.0663 0.0192 0.1781 7.9979 0.8703 0.0179 0.2139 6.757<br />

Texaco Inc. 0.3416 0.0134 0.2656 2.596 0.6644 0.0166 0.1192 6.477 0.5197 0.0152 0.1725 5.829<br />

Texas Instruments Inc. 0.6839 0.0198 0.2076 3.174 1.0299 0.0268 0.1595 7.848 0.8726 0.0239 0.1831 7.737<br />

United Technologies Corp 0.5801 0.0185 0.3397 2.826 0.7752 0.0170 0.0396 3.190 0.6876 0.0177 0.1933 3.034<br />

Walgreen Co. 0.5851 0.0165 0.3530 3.030 1.1996 0.0185 0.1412 3.316 0.9217 0.0176 0.2260 3.295<br />

30<br />

Standart & Poor’s 500 0.1783 0.0075 0.2554 3.131 0.5237 0.0101 -1.6974 36.657 0.3674 0.0090 -1.2236 32.406<br />

Table 1: This table gives the main st<strong>at</strong>istical fe<strong>at</strong>ures of the three samples we have consi<strong>de</strong>red. The columns Mean, Std., Skew. and Kurt.<br />

respectively give the average r<strong>et</strong>urn multiplied by one thousand, the standard <strong>de</strong>vi<strong>at</strong>ion, the skewness and the excess kurtosis of each ass<strong>et</strong><br />

over the time intervals form July 1962 to December 1979, January 1980 to Decemeber 2000 and July 1962 to December 2000. The excess<br />

kurtosis is given as indic<strong>at</strong>ive of the rel<strong>at</strong>ive weight of large r<strong>et</strong>urn amplitu<strong>de</strong>s, and can always be calcul<strong>at</strong>ed over a finite time series even if<br />

it may not be asymptotically <strong>de</strong>fined for power tails with exponents less than 4.

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