Labeling of positions to analyse according to labels and not portfolio

I would like a labeling feature. Basically you could label every position (for example - speculativ, short term, long term) you have and than analyse them according to label and not portfolio. For me i have different portfolios and I don't always manage to buy the short term in the short term portfolio because the money is in the other location. So there is always some mix and match. Labeling would help here.