I have discovered a new website which I find very interesting. I established my personal account, typed in our club's portfolio holdings, and "graded" the portfolio. Voila! One more piece of evidence as to why we should sell XX and buy more YYY.

http://navelliergrowth.investorplace.com/portfolio-grader/

This website is meant for "active traders" rather than buy-and-hold traders, but it's one more place to help us with that "hard to decide when to sell" decision.