**tradeblotter » R**, and kindly contributed to R-bloggers)

In our pre-conference workshop, Brian Peterson and I worked with the EDHEC hedge fund indexes as a way to demonstrate how to use PortfolioAnalytics within the context of long-term allocation problems.

Although they are not investible, these indexes are probably more representative than most given that they are, in fact, meta-indexes. Other indexes might be preferable when considering a specific portfolio, however.

Here’s how to parse the data. Unfortunately, there’s no good way to download the data directly (as far as I can figure), so you’ll have to have to log in (registration is free) and download the data manually. The code shown here only requires PerformanceAnalytics.

Here’s a parser for once you have the `history.csv`

file in a local directory.

require(xts) # Download the following file to the working directory: # http://www.edhec-risk.com/indexes/pure_style/data/table/history.csv x=read.csv(file="history.csv", sep=";", header=TRUE, check.names=FALSE) x.dates = as.Date(x[,1], format="%d/%m/%Y") x.data = apply(x[,-1], MARGIN=2, FUN=function(x){as.numeric(sub("%","", x, fixed=TRUE))/100}) # get rid of percentage signs edhec = xts(x.data, order.by=x.dates)

Now we can draw some pictures. Here are cumulative returns and drawdowns through time.

# Drop some indexes and reorder edhec.R = edhec[,c("Convertible Arbitrage", "Equity Market Neutral","Fixed Income Arbitrage", "Event Driven", "CTA Global", "Global Macro", "Long/Short Equity")] require(PerformanceAnalytics) # Cumulative returns and drawdowns par(cex.lab=.8) # should set these parameters once at the top op <- par(no.readonly = TRUE) layout(matrix(c(1, 2)), height = c(2, 1.3), width = 1) par(mar = c(1, 4, 4, 2)) chart.CumReturns(edhec.R, main = "EDHEC Index Returns", xaxis = FALSE, legend.loc = "topleft", ylab = "Cumulative Return", colorset= rainbow8equal, ylog=TRUE, wealth.index=TRUE, cex.legend=.7, cex.axis=.6, cex.lab=.7) par(mar = c(5, 4, 0, 2)) chart.Drawdown(edhec.R, main = "", ylab = "Drawdown", colorset = rainbow8equal, cex.axis=.6, cex.lab=.7) par(op)

Here are the monthly returns of these series with estimates of VaR and ETL. Note that the axes are scaled the same for each series, which makes certain attributes easier to compare, visually.

# Generate charts of EDHEC index returns with ETL and VaR through time par(mar=c(3, 4, 0, 2) + 0.1) #c(bottom, left, top, right) charts.BarVaR(edhec.R, p=(1-1/12), gap=36, main="", show.greenredbars=TRUE, methods=c("ModifiedES", "ModifiedVaR"), show.endvalue=TRUE, colorset=rep("Black",7), ylim=c(-.1,.15)) par(op)

Similarly, here is a view that compares the distributions of each. This graphic is a bit more complicated, but I think I like it well enough to consider functionalizing it.

op <- par(no.readonly = TRUE) # c(bottom, left, top, right) par(oma = c(5,0,2,1), mar=c(0,0,0,3)) layout(matrix(1:28, ncol=4, byrow=TRUE), widths=rep(c(.6,1,1,1),7)) # layout.show(n=21) chart.mins=min(edhec.R) chart.maxs=max(edhec.R) row.names = sapply(colnames(edhec.R), function(x) paste(strwrap(x,10), collapse = "\n"), USE.NAMES=FALSE) for(i in 1:7){ if(i==7){ plot.new() text(x=1, y=0.5, adj=c(1,0.5), labels=row.names[i], cex=1.1) chart.Histogram(edhec.R[,i], main="", xlim=c(chart.mins, chart.maxs), breaks=seq(-0.15,0.10, by=0.01), show.outliers=TRUE, methods=c("add.normal")) abline(v=0, col="darkgray", lty=2) chart.QQPlot(edhec.R[,i], main="", pch="*", envelope=0.95, col=c(1,"#005AFF"), ylim=c(chart.mins, chart.maxs)) abline(v=0, col="darkgray", lty=2) chart.ECDF(edhec.R[,i], main="", xlim=c(chart.mins, chart.maxs), lwd=2) abline(v=0, col="darkgray", lty=2) } else{ plot.new() text(x=1, y=0.5, adj=c(1,0.5), labels=row.names[i], cex=1.1) chart.Histogram(edhec.R[,i], main="", xlim=c(chart.mins, chart.maxs), breaks=seq(-0.15,0.10, by=0.01), xaxis=FALSE, yaxis=FALSE, show.outliers=TRUE, methods=c("add.normal")) abline(v=0, col="darkgray", lty=2) chart.QQPlot(edhec.R[,i], main="", xaxis=FALSE, yaxis=FALSE, pch="*", envelope=0.95, col=c(1,"#005AFF"), ylim=c(chart.mins, chart.maxs)) abline(v=0, col="darkgray", lty=2) chart.ECDF(edhec.R[,i], main="", xlim=c(chart.mins, chart.maxs), xaxis=FALSE, yaxis=FALSE, lwd=2) abline(v=0, col="darkgray", lty=2) } } par(op)

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