More on the Coppock Curve Buy Signals of 4/28/78 & 5/30/03

By: Gerald Hoopes | Tue, Jun 10, 2003
Print Email

My June 6 communication showed that the 8 deep and very deep Monthly DJIA Coppock Curve buy signals occurring after 12/1/61 comprise 4 distinct pairs with respect to time path patterns generated by plotting the smoothed CI-NCI Ratio against the inverted and smoothed NYSE TRIN. One of those pairs consists of the signals of 4/28/78 and 5/30/03.

Data permit moving the initial date of investigation from 12/1/61 to 12/27/40. That allows the time paths of 2 additional deep Coppock Curve buy signals (9/30/42 and 8/29/47) to be highlighted on the chart, from the date the smoothed CI-NCI last dipped to 0.9500 to the date of the signal. The time path of the 8/29/47 signal fits the pattern of 1/31/63 and 9/30/82.

The time path of the 9/30/42 signal, on the other hand, fits the pattern of 4/28/67 and 10/31/88.

Thus, even after the addition of 21 early years to the investigation, the 4/28/78 and 5/30/03 signals remain uniquely akin with respect to pattern.

The following chart shows that the 9/30/42 signal was a big winner, but that the 8/29/47 signal was about 2 years early.

Most later signals were big winners. However, 4/28/78 was not. The outcome of the 5/30/03 signal remains to be seen.


Author: Gerald Hoopes

Gerald Hoopes

An explanation of the Coppock Curve can be found at How to Calculate the Coppock Curve. An archive of Geralds comments can be found in the forums at

This analysis is for academic purposes only and must not be construed as investment or trading advice.

All Images, XHTML Renderings, and Source Code Copyright ©