Cyclic behaviour inside congestion zone

A cyclic behaivour in the IBOV             index is very apparent at the moment. The period is around 4 days (2 days between each peak/bottom).
Also there is a interesting triangle (growing over time) that the index also seems to be respecting.

I am just starting to make some analysis here on TradingView.
Comments on my thoughts would be very appreciated. =)
Comment: I posted a cleaner version of the chart here:  
Comment: (below in the comments)
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