Continued from STI Analysis -- the next peak and trough ? (XV) STI fell below 3300 on 18th Jun 2018 has invalidate the Scenario 2.2 mentioned in previous analysis, that is the correction which started late January 2018 is Primary degree Wave 4.  This is due to the fact it has overlapped into Primary degree Wave 1 peak.  Hence, STI is now down to the remaining 2 possibilities, Scenario 1 and Scenario 2.1.  Though both these scenarios indicate STI is in Primary degree Wave 3 doing Intermediate degree Wave 4 correction, the different is how Primary degree Wave 1 and Wave 2 are shaped.  This will be useful to analyze Primary degree Wave 4 in the future. The above chart shows how STI looks like for both Scenario 1 and Scenario 2.1 now.  There are some interesting points to note. 1. Intermediate degree ......