I was tempted but In addition to having a rule about limiting my...

I was tempted but In addition to having a rule about limiting my position size I also have a fund flow rule. Basically when PEN dropped to 3% of my portfolio I still cant buy more even though my position size limit on it is 5% because I still put in 5% of my portfolio into it. This rule is important because its always possible for an individual stock to go to zero and if you are always topping up the position you can end up burning more than your position size limit depending on how often you trade.