QQQ是行業係統股的指數，不是大盤指數。風險排列，個股(NVDA)>行業係統股(QQQ)>標普500指數(SPY)

來源: hhtt 於 2022-09-19 10:24:24 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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