結論：IOO 投資全球100家最大公司，其前10的倉位仍舊是美國公司。QQQ長期表現勝過IOO, 所以投資QQQ就是/好過投資全球。之前矽穀居士也做過功課，他說過投資全球不如投資VOO, VGT, 因為美國大公司就是全球公司。
論據如下：
The iShares Global 100 ETF (IOO) is an exchange-traded fund (ETF) that aims to replicate the performance of the S&P Global 100 Index. This index is composed of 100 large-cap multinational companies selected by the S&P Committee, providing broad exposure to international markets. IOO allows investors to diversify into a basket of global stocks in a single fund.
Key features of IOO:
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The fund provides access to 100 of the largest multinational companies, covering a diverse range of sectors and countries.
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IOO offers a way to diversify an investment portfolio with international stocks, potentially reducing risk.
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IOO is designed to provide long-term growth potential, similar to the performance of the S&P Global 100 Index.
