Heterogeneity of Investors and Asset Pricing in a Risk-Value World



fe

-fl (⅛)


-1


7 - 2 -f '(⅛).

7 - 1 f(eA ’


V i,ε


(33)


Hence

*>=71(a+
i ×


⅛i

7

dei ∕dε

Ai ■ —

c I—7


)∙


(34)


Divide (30) by f (e) and aggregate. This yields

1 = -τ'(e)-diffl(<Ы = ~'(^)(a +1—-) (dJfiAA    (35)

i                                       i 7                  ' /

Now divide (30) by fi (⅛)∙ This and (35) yield

fl (<M
fi (A)


dei


-'l. j(ɛ) =________-djfi(eA________

fi '       ∑j ⅛√Λ∙(M + ⅛)


(36)


The left hand side of this equation, multiplied by -1, equals the term in
the squared bracket of (34). Hence it follows that

7 - 2 ^2A + 1-7________

7 - 1 i [∑J (½√f,∙ (eie))(a + f⅛)]


(⅛ )'


ε.


(37)


Mne gil+ ɪ/ / l'a + ɪ)

V i, ε so that   i g-iε = 1 ^ ε.


Then (37) yields

43



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