原因是7大高科技公司占了55%的QQQ，占了30%的SPY。一半以上的QQQ占了30%SPY，所以沒有必要投太多QQQ。

來源: hhtt 於 2024-11-16 17:14:00 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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