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List: r-sig-finance
Subject: Re: [R-SIG-Finance] fPortfolio and minimum variance portfolio
From: amarjit chandhial <a.chandhial () btinternet ! com>
Date: 2014-05-13 8:19:55
Message-ID: 1399969195.87488.YahooMailNeo () web186002 ! mail ! ir2 ! yahoo ! com
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Try:
library(fPortfolio)
?minvariancePortfolio
#>From the Examples
## data -
Data = SMALLCAP.RET
Data = Data[, c("BKE", "GG", "GYMB", "KRON")]
Data
## spec -
Spec = portfolioSpec()
setTargetReturn(Spec) = mean(colMeans(Data))
Spec
## constraints -
Constraints = "LongOnly"
Constraints
## efficientPortfolio -
# efficientPortfolio(Data, Spec, Constraints)
## tangency Portfolio -
# tangencyPortfolio(Data, Spec, Constraints)
## minvariancePortfolio -
result <- minvariancePortfolio(Data, Spec, Constraints)
##########
#Via result
#-------------
print(result)
attributes(result)
result@portfolio
result@portfolio@portfolio
result@portfolio@portfolio$targetReturn[1]
result@portfolio@portfolio$targetRisk[2]
Amarjit
________________________________
From: Albert Darenberg <albert.darenberg@gmail.com>
To: r-sig-finance@r-project.org
Sent: Tuesday, 13 May 2014, 0:01
Subject: [R-SIG-Finance] fPortfolio and minimum variance portfolio
I'm using fPortfolio to determine the minimum variance portfolio which
works fine. However, I can't seem to get direct access to the Target Return
and Risk values.
result <- minvariancePortfolio(data, globminSpec, "LongOnly")
will output
[..]
Target Return and Risks:
mean mu Cov Sigma
0.0302 0.0302 0.0143 0.0143
[..]
The question is how can I directly access "mean" and "Sigma"?
I tried getTargetReturn(result) but it returns "NA"
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