華倫巴菲特的分身，學學他的投資術
https://www.marketwatch.com/story/this-investor-rivals-warren-buffett-and-you-probably-havent-heard-of-him-2018-05-30
Simpson summed up his opposition to these notions this way during his talk at Northwestern: “One thing a lot of investors do is they cut their flowers and water their weeds. They sell their winners and keep their losers, hoping the losers will come back even. Generally, it’s more effective to cut your weeds and water your flowers. Sell the things that didn’t work out, and let the things that are working out run…If I’ve made one mistake in the course of managing investments it was selling really good companies too soon. Because generally, if you’ve made good investments, they will last for a long time.”
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