指數的關鍵是包括各種行業，分散個別公司的風險，長期來說，是個相對低風險的股市投資，標普曆史上的年平均回報是10%！

來源: hhtt 於 2023-05-29 15:29:47 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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