Another situation requiring wide diversification occurs when an investor who does not understand the economics of specific businesses nevertheless believes it in his interest to be a long-term owner of American industry. That investor should both own a large number of equities and space out his purchases. By periodically investing in an index fund, for example, the know-nothing investor can actually out-perform most investment professionals. Paradoxically, when "dumb" money acknowledges its limitations, it ceases to be dumb.
On the other hand, if you are a know-something investor, able to understand business economics and to find five to ten sensibly-priced companies that possess important long-term competitive advantages, conventional diversification makes no sense for you. It is apt simply to hurt your results and increase your risk. I cannot understand why an investor of that sort elects to put money into a business that is his 20th favorite rather than simply adding that money to his top choices - the businesses he understands best and that present the least risk, along with the greatest profit potential. In the words of the prophet Mae West: "Too much of a good thing can be wonderful."
我相信很多同學的績效能夠和巴菲特所講的第二種情況媲美,
但是若沒辦法長期擊敗大盤(如巴菲特這樣),那巴菲特在1993年的建議就是定期買進指數型基金
跟著美國企業成長
when "dumb" money acknowledges its limitations, it ceases to be dumb.
"如果一個人承認他在投資上面是個笨蛋的時候,那他就再也不笨了"
這句話我想會流傳千古而不朽
[ 本帖最後由 tw54585 於 2013-12-12 22:54 編輯 ]
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