As an investor, you will always run into many thoughts that will influence you and make you think much more. So these are the thoughts I had over the length of this week... Concentration vs Diversification It has been rather dull lately while waiting for Fed to announce the increase in interest rate. Regardless, the Stocks in Singapore did not move much. Rather, it seems that the US market is beginning to be on a downtrend. Nevertheless, my mind is quite focus on reducing the number of counters in my portfolio and increasing my warchest. One of the reason was that I met a friend recently (he is a very good investor and he will be in the upcoming interview series) and he commented his belief to me - "Invest in ideas you believe in the most".  Despite disagreeing with the concentration in his portfolio, his words did influence ......