Theoretically it's more robust, but practically it needs to be back-tested on a huge universe and compared to BB. Also, the fact that BB is known and the IQR is unknown could play in favor for BB (as traders are more likely to act on BB signals than IQR signals and therefore push results otwards it favorably).
Is it more useful than BB?
Theoretically it's more robust, but practically it needs to be back-tested on a huge universe and compared to BB. Also, the fact that BB is known and the IQR is unknown could play in favor for BB (as traders are more likely to act on BB signals than IQR signals and therefore push results otwards it favorably).