效率市場假說真的成立嗎？主動投資為何「不可或缺」｜格羅斯曼－斯蒂格利茨悖論

如果市場真的完全有效率，所有資訊都已經反映在股價上，那為什麼還會有人願意花錢做研究？本集從格羅斯曼－斯蒂格利茨悖論出發，拆解效率市場假說的內在矛盾，說明主動投資者如何透過研究、競爭與交易行為，讓資訊真正進入價格。你以為被動投資是在「躺著賺」，其實它仰賴的是一整套殘酷但理性的市場運作機制。 -- Hosting provided by SoundOn

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效率市場假說真的成立嗎？主動投資為何「不可或缺」｜格羅斯曼－斯蒂格利茨悖論

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