最好的判斷標準是同樣資金，過去五年總盈利打贏SPY，也就是投資所說的alpha，如能做到就是專業玩家，否則還是玩兒票

來源: 數據說活於 2023-06-29 11:38:42 [舊帖] [給我悄悄話] 本文已被閱讀：次

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