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Rise of tech giants skews active fund portfolios
科技巨擘的崛起使主動型基金投資組合失衡

Top 10 stocks in the S&P 500 now comprise 37 per cent of index weighting
標普500指數中排名前10位的股票目前佔指數權重的37%。
The correlation between the stock market and individual tech stocks can be a “source of anxiety” for wealth managers

Shares in US technology giants have risen so rapidly this year, driven by an artificial intelligence frenzy, that their index weighting has skewed Wall Street’s overall performance — and prompted investors to run remarkably similar portfolios.

在人工智慧熱潮的推動下,美國科技巨擘的股價今年以來漲勢迅猛,其指數權重已經偏離了華爾街的整體表現,並促使投資者運作極爲相似的投資組合。

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