SOXL/SOXS to change underlying index on 8/25/2021

[lindq]

https://finance.yahoo.com/news/direxion-changes-index-semiconductor-etfs-203000075.html

Well, there goes years of data out the window.

 

[KCalhoun]

Thx, I trade both, didn't know that. Charts will be different

 

[SunTrader]

From what I understand the index, that feeds/affects the two ETF's is changing, not the ETF's themselves.

Although I suppose they might also back adjust the ETF's data based on new index??