Posts Tagged ‘ S&P 500 ’

More S&P 500 correlation

July 28, 2011
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More S&P 500 correlation

Here are some additions to the previous post on S&P 500 correlation. Correlation distribution Before we only looked at mean correlations.  However, it is possible to see more of the distribution than just the mean.  Figures 1 and 2 show several quantiles: 10%, 25%, 50%, 75%, 90%. Figure 1: Quantiles of 50-day rolling correlation of … Continue reading →

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On “Stock correlation has been rising”

July 17, 2011
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On “Stock correlation has been rising”

Ticker Sense posted about the mean correlation of the S&P 500. The plot there — similar to Figure 1 — shows that correlation has been on the rise after a low in February. Figure 1: Mean 50-day rolling correlation of S&P 500 constituents to the index. For me, this post raised a whole lot more … Continue reading →

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Testing an S&P 500 prediction

July 10, 2011
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Testing an S&P 500 prediction

If a particular prediction comes true, how surprised should we be? The prediction The page that sparked my curiosity tells of a prediction made a year ago that the S&P 500 would beat its historic high by the end of 2011.  It says that at the point the prediction was made, the level of the … Continue reading →

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