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GiuseppeAlesii
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Posts: 9
Joined: December 8th, 2013, 3:54 pm

analytical solutions / closed forms for classical mean var. portfolio sel.

August 17th, 2017, 5:39 pm

could anyone tell me a reference where I can find the analytical solution of the risk aversion formulation of the classical mean variance portfolio optimization problem,
maxw(w' \mu - \lambda w' \Sigma w)
s.t.
w' i = 1
 akin to the closed forms which can be derived through constrained optimization using Lagrange multipliers for the risk minimization formulation?
minww' \Sigma w )
s.t.
w' \mu = \mu0
w' i = 1
Also, could anyone tell me the reference for a closed form solution of the expected return formulation of the same classical mean variance portfolio optimization problem.
maxw(w' \mu) 

s.t.
w' \Sigma w = \sigma20
w' i = 1
Last edited by GiuseppeAlesii on August 18th, 2017, 7:32 am, edited 1 time in total.
 
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RDiamond
Posts: 14
Joined: March 5th, 2010, 5:57 pm

Re: analytical solutions / closed forms for classical mean var. portfolio sel.

August 17th, 2017, 9:35 pm

What a coincidence!
 
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ppauper
Posts: 11729
Joined: November 15th, 2001, 1:29 pm

Re: analytical solutions / closed forms for classical mean var. portfolio sel.

August 18th, 2017, 5:31 am

What a coincidence!
you both have it for homework?
 
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GiuseppeAlesii
Topic Author
Posts: 9
Joined: December 8th, 2013, 3:54 pm

Re: analytical solutions / closed forms for classical mean var. portfolio sel.

August 18th, 2017, 7:28 am

What a coincidence!
happenstance with which event?
 
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kermittfrog
Posts: 23
Joined: September 9th, 2010, 10:25 am
Location: Frankfurt

Re: analytical solutions / closed forms for classical mean var. portfolio sel.

August 18th, 2017, 1:59 pm

If i remember correctly, the first set optimization equations are derived using exponential utility.

So the expected utility formula should be something like E(exp(-a*x)).

Yet, I assume that you are rather interested in the closed form solution to this equation - this would make itself available by googling along the lines of "linear algebra portfolio selection". Then, select result 1.
 
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GiuseppeAlesii
Topic Author
Posts: 9
Joined: December 8th, 2013, 3:54 pm

Re: analytical solutions / closed forms for classical mean var. portfolio sel.

August 18th, 2017, 3:11 pm

If i remember correctly, the first set optimization equations are derived using exponential utility.

So the expected utility formula should be something like E(exp(-a*x)).

Yet, I assume that you are rather interested in the closed form solution to this equation - this would make itself available by googling along the lines of "linear algebra portfolio selection". Then, select result 1.
thanks, very good hint. I really appreciate.