Quote from nitro:
Actually, the concept is cross-correlation.
nitro
Negative.
The concept is autocorrelation.
It's basic undergraduate Univariate Probability.
Autocorrelation detects the degree of randomness in a time series. Bonds and Currencies tend to exhibit a high degree of autocorrelation. The higher the autocorrelation found in a time series the lower degree of randomness therein. Simply said Bonds and Currencies tend to trend well and this is shown by their high degree autocorrelation and this in itself makes them fantastic trading vehicles.
Obviously this why trend following systems tend to work well on Bond and Currencies. Conversely, a lower degree of autocorrelation is one of the reasons trend following systems work much less well in the Share market (i.e Shares tend to exhibit a higher degree of randomness).
With regard to cross-correlation, I donât really care how the Bonds and S&Pâs correlate with each other because itâs not reliable. Sometimes theyâre highly correlated and sometimes theyâre highly negatively correlated, but this is based on other macro factors. And this is exactly where the âartâ of the trader trumps the âscienceâ of probability.
Regards,
Dr. Zhivodka