Strategies to view sub-performance of portfolio

Please include “Strategies” as a sub-performance view.

I would like to see performance of different groups of my investments. E.g. if I followed an “Oil strategy” and buy BP and Shell, and I followed an “Airline strategy” and buy United and Southwest. I would like to assign these stocks to the respective strategies to see how my strategies perform separate from another.
Also, I would want to be able to assign a certain amount (including fractions) of shares owned to a strategy, not just “all”. So if I owned 3 BP shares, I could assign 2.5 shares to my “Oil strategy” and 0.5 shares to my “Energy strategy”.

Thank you