ETF section rotation

[touchups]

I have 25% of my portfolio in one particular ETF. I would like to keep it that way, but not necessarily the same ETF. I ran across ETF sector rotation. Here is a pic of it. Is there any way to code this into Thinkorswim? Or maybe an excel spreadsheet? Seems like a great ETF strategy. The author (relaxed trading) recommends holding 10 ETF's to be the sweet spot. He does not provide any coding or spreadsheet for this. Just the method. Adding this pic to explain it easier. Thank you

 

[MerryDay]

I have 25% of my portfolio in one particular ETF. I would like to keep it that way, but not necessarily the same ETF. I ran across ETF sector rotation. Here is a pic of it. Is there any way to code this into Thinkorswim? Or maybe an excel spreadsheet? Seems like a great ETF strategy. The author (relaxed trading) recommends holding 10 ETF's to be the sweet spot. He does not provide any coding or spreadsheet for this. Just the method. Adding this pic to explain it easier. Thank you

None of the information required is available in the platform.