I'm not sure how this got marked as Already Offered. Maybe I thought you meant Adobe Target In any case, we do want to improve target and goal reporting in Workspace. We'll keep an eye on this idea.
@dboonskincap: I'm not sure whether this counts, but we are taking holidays into account now for Anomaly Detection. It might not catch all of the stock market holidays, but the big ones (Labor Day, Thanksgiving, Christmas Day, etc.) should all be covered so that it will compare YoY and see that traf...
This is available in the settings icon for each column in Analysis Workspace. It won't be coming to Reports & Analytics, but is very easy to do in Analysis Workspace.