Is there an R package which can estimate a covariance matrix using OHLC (Open/High/Low/Close) share prices for upwards of 40 shares using the Yang & Zhang method using daily data? I google searched and have yet to find anything to this extent.
I am aware that the package 'TTR' can estimate volatility using this method (and several others).
If there is not a package which can create a covariance matrix using OHLC prices, is it possible to create a covariance matrix from the volatility estimates using the TTR package?
Best,
Alex