QQQ是行业系统股的指数，不是大盘指数。风险排列，个股(NVDA)>行业系统股(QQQ)>标普500指数(SPY)

来源: hhtt 于 2022-09-19 10:24:24 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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