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Tail Dependence - ETH - Entrepreneurial Risks - ETH Zürich

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3.51 ˆ λ + (k) for the lower tail of the nine assets and the index S&P 500 is<br />

plotted in black for ˆ β(k) calculated by least squares method applied to<br />

linear additive single factor model: X = β·Y +ε and adapted to the first<br />

condition: Y ≥ Y (k) ∩ X ≥ X(k), ˆν(k = 4%) and ˆ l(k) in dependence<br />

of threshold k for k/N = 3% . . .10%, in blue for ˆ β(k) and ˆ l(k) adapted<br />

to the first SI condition for comparison, in green for Reference ˆ β and<br />

ˆl(k), and for Reference ˆ λ + (k = 4%) is given in red. Y denotes the index<br />

return vector of S&P 500 and X denotes asset return vector of the nine<br />

assets for a time interval ranging from January 1991 to December 2000. 91<br />

3.52 ˆ λ + (k) for the upper tail of the nine assets and the index S&P 500 is<br />

plotted in black for ˆ β(k) calculated by least squares method applied to<br />

linear additive single factor model: X = β · Y + ε and adapted to the<br />

second condition: Y ≥ Y (k), ˆν(k = 4%) and ˆ l(k) in dependence of<br />

threshold k for k/N = 3% . . .10%, in blue for ˆ β(k) and ˆ l(k) adapted<br />

to the first SI condition for comparison, in green for Reference ˆ β and<br />

ˆl(k), and for Reference ˆ λ + (k = 4%) is given in red. Y denotes the index<br />

return vector of S&P 500 and X denotes asset return vector of the nine<br />

assets for a time interval ranging from January 1991 to December 2000. 92<br />

3.53 ˆ λ + (k) for the lower tail of the nine assets and the index S&P 500 is<br />

plotted in black for ˆ β(k) calculated by least squares method applied to<br />

linear additive single factor model: X = β · Y + ε and adapted to the<br />

second condition: Y ≥ Y (k), ˆν(k = 4%) and ˆ l(k) in dependence of<br />

threshold k for k/N = 3% . . .10%, in blue for ˆ β(k) and ˆ l(k) adapted<br />

to the first SI condition for comparison, in green for Reference ˆ β and<br />

ˆl(k), and for Reference ˆ λ + (k = 4%) is given in red. Y denotes the index<br />

return vector of S&P 500 and X denotes asset return vector of the nine<br />

assets for a time interval ranging from January 1991 to December 2000. 93<br />

3.54 ˆ βSI(N) plotted in black for the upper tails and plotted in green for the<br />

lower tails for 9 assets given by X and index S&P 500 given by Y using<br />

the linear single factor model: X = β · Y + ε and the first SI condition:<br />

Y ≥ Y (k) ∩ X ≥ X(k) for rolling time horizon windows of S = 2500<br />

considered data points from N = (1 . . .S), (2 . . .S + 1), . . ., (5736 − S +<br />

1 . . .5736) or a total time interval from July 1985 to Mars 2008. . . . . 100<br />

3.55 ˆ βSI(N) plotted in black for the upper tails and plotted in green for the<br />

lower tails for 9 assets given by X and index S&P 500 given by Y using<br />

the linear single factor model: X = β·Y +ε and the second SI condition:<br />

Y ≥ Y (k) for rolling time horizon windows of S = 2500 considered data<br />

points from N = (1 . . .S), (2 . . .S + 1), . . ., (5736 − S + 1 . . .5736) or a<br />

total time interval from July 1985 to Mars 2008. . . . . . . . . . . . . . 101<br />

3.56 λ + (N) for upper tails of index S&P 500 and the nine assets plotted<br />

in blue and λ − (N) for lower tails plotted in red using non-parametric<br />

approach given by equation ˆ λ +,− = 1/ max<br />

�<br />

1,<br />

l<br />

ˆβ +,−<br />

SI<br />

� ˆν<br />

with coefficients<br />

ˆν, l, and ˆ β +,−<br />

SI for rolling time horizon windows of S = 2500 considered<br />

data points from N = (1 . . .S), (2 . . .S+1), . . ., (5736−S+1 . . .5736) or<br />

a total time interval from July 1985 to Mars 2008. ˆ β +,−<br />

SI were calculated<br />

using the linear single factor model: X = β · Y + ε and the first SI<br />

condition: Y ≥ Y (k) ∩ X ≥ X(k). . . . . . . . . . . . . . . . . . . . . . 102

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