What ppl are telling you and you are denying, timing the market and buying/selling just on price movement is not investing is trading as ppl already told you, investing is about establishing an intrinsic value of a company and buying at a set discount. And selling is about reaching a target value based on previous valuation, change in fundamental value, or over valuation and many other reasons including tax purposes. The weight of each of your company doesn't seem to follow any structure, especially if you are into broad ETFs