Tag Archives: stock correlations
A pictorial history of US large cap correlation
How has the distribution of correlations changed over the last several years? Previously Posts about correlation boxplots explained Data Daily returns of 443 large cap US stocks from 2004 through 2012 were used. The sample correlations — almost 98,000 of them — during each year were created. If we were actually using the correlations, then … Continue reading
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
Posted in Quant finance, R language
Tagged correlations, equity correlations, jackknife, S&P 500, stock correlations
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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
Posted in Quant finance, R language
Tagged correlations, equity correlations, S&P 500, stock correlations
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Elevated stock correlations
Monday’s Last Word by James Mackintosh in the FTfm states that stock correlations are very high relative to the historical record. He asserts that at least part of this is driven by passive investment — in particular people coming in and out of the market. A consequence of the high correlation is that it reduces … Continue reading
Posted in Fund management in general, Random portfolios
Tagged equity correlations, stock correlations
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