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Introduction to Asset Allocation

October 12, 2011
By
Introduction to Asset Allocation

This is the first post in the series about Asset Allocation, Risk Measures, and Portfolio Construction. I will use simple and naive historical input assumptions for illustration purposes across all posts. In these series I plan to discuss: Maximum Loss, MAD, CVaR, CDaR, Omega Risk Measures 130:30 Long/Short portfolios and Cardinality Constraints Arithmetic and Geometric

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Where to find data to use with R

October 11, 2011
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(Contributing blogger Joe Rickert has put together a fantastic list of data sources suitable for use with R. If you're looking for data to use in the Applications of R Contest -- entries close October 31 -- this is a great resource for you -- Ed.) Hardly a day goes by without someone or something reminding me that we...

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The Work of the 1 Percent and the 0.1 Percent

October 10, 2011
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The Work of the 1 Percent and the 0.1 Percent

The Occupy Wall Street movement chants "We are the 99 percent, you are the 1 percent." It's a catchy refrain, and there are many excellent reasons to put the focus on Wall Street in the struggle for economic and political justice in the US. But even singling out one percent of the US means we

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Risk, Return and Analyst Ratings

October 7, 2011
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Risk, Return and Analyst Ratings

Today I want to discuss a connection between Risk, Return and Analyst Ratings. Let’s start with defining our universe of stocks : 30 stocks from Dow Jones Industrial Average (^DJI) index. For each stock I will compute the number of Upgrades and Downgrades, Risk, and Return in 2010:2011. I will run a linear regression and

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Visualizing Tables with plot.table

October 6, 2011
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Visualizing Tables with plot.table

plot.table function in the Systematic Investor Toolbox is a flexible table drawing routine. plot.table has a simple interface and takes following parameters: plot.matrix – matrix with data you want to plot smain – text to draw in (top, left) cell; default value is blank string highlight – Either TRUE/FALSE to indicate if you want to

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Drawing maps using shape files and R

October 3, 2011
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Drawing maps using shape files and R

Sometimes, the only thing we want is a chart that speaks for itself rather than boring regression tables in our research paper. Graphs are efficient at showing the broad picture of an issue. In fact, graphs in research papers seem to be gaining a momentum in political science. If you want a more in-depth discussion about this, you may...

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Reminder: One week til Rcpp class in San Francisco

October 1, 2011
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Just a quick note to remind everyone that the Rcpp class in San Francisco, which I am holding together with Revolution Analytics, will take place a week from today. We are happy to report that the number of registrations has met our initial target...

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Stuff Harvard People Like

September 28, 2011
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What types of students go to which schools? There are, of course, the classic stereotypes: MIT has the hacker engineers. Stanford has the laid-back, social folks. Harvard has the prestigious leaders of the world. Berkeley has the activist hippies. Caltech has the hardcore science nerds. But how well do these perceptions match reality?...

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ttrTests: Its Great Thesis and Incredible Potential

September 26, 2011
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ttrTests: Its Great Thesis and Incredible Potential

I stumbled on the ttrTests R package as mentioned in my post ttrTests Experimentation.  I did not recognize its potential until I spent much more time absorbing the basis of the package—David St. John’s thesis Technical Analysis Based on Movin...

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Are new SEC rules enough to prevent another Flash Crash?

September 22, 2011
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Are new SEC rules enough to prevent another Flash Crash?

At 2:42PM on March 10 2010, without warning, the Dow Jones Industrial Index plunged more than 1000 points in just 5 minutes. It remains the biggest one-day decline in this stock market index in history. On an intra-day basis, anyway: by the end of the day, the market had regained 600 points of the drop. At the time, the...

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