fade-leftfade-rightAlternative Bradley Siderograph Turn Dates

In his book "Stock Market Prediction," Donald Bradley provided a formula for calculating the Bradley Siderograph.

However, rather than focusing on one very specific formula, Donald Bradley emphasized that the specific factors to be incorporated should be decided "depending upon choice after experimentation."

For example, his formula includes an "adopted multiplier" that multiplies the Long Terms and Declinations by "3, 4, or 5 times."

This page contains an analysis of which set of weights appears to work the best for WTI Crude Oil based on actual historical correlations over six separate time periods.

If you click on one of the time periods below (e.g., "180 Days"), an image will pop up that contains a table with the historical correlation between WTI Crude Oil and the various versions of the Bradley Siderograph for the time period you selected.  The set of weights with the highest correlation for each time period is highlighted in yellow.

Alternative Bradley Siderograph for WTI Crude Oil

If you click on one of the time periods below (e.g., "180 Days"), an image will pop up that contains a table with the historical correlation between WTI Crude Oil and the various versions of the Bradley Siderograph for the time period you selected.  The set of weights with the highest correlation for each time period is highlighted in yellow.

The table below illustrates the average historical correlation over the 6 recent time periods listed above for WTI Crude Oil and

  • The Bradley Siderograph using various possible weights 
  • Middle Terms only,
  • Long Terms only, and
  • Declinations only.

The cell toward the bottom-right side of the table highlighted in yellow (i.e., "XX%") represents the formula used for the latest graphs available for the Bradley Siderograph on this site:

Bradley Siderograph = 1*(Middle Terms) + 5*(Long Terms) + 5*(Declination of Mercury and Venus)

Based on the results in the table above, see below for a version of the Bradley Siderograph formula that has tended to have a relatively high correlation over six recent time periods (i.e., 120 days, 180 days, etc.).  However, it's important to remember that "correlation is not causation" (i.e., one does not necessarily cause the other).

Bradley Siderograph = 1*(Middle Terms) + 3*(Long Terms) + 1*(Declination of Mercury and Venus)

See below for a graph of WTI Crude Oil and this set of weights over various time periods.

Alternative Turn Dates for Other Securities