FHist has been safe to use with splits & dividends FHist now safe to use with split sensitive factors. But as Yuval said not sure there’s a reason to use FHist
You can see that it works for TSLA and for MRBK which pays dividends. Just set the as-of date to 5/14/2023 to align it to the weeked.
SplitFactor(300)>=2
Ticker(“tsla mrbk”)
@fh:fhist(“close(0)”,52)
@cl:close(250)