结论：IOO 投资全球100家最大公司，其前10的仓位仍旧是美国公司。QQQ长期表现胜过IOO, 所以投资QQQ就是/好过投资全球。之前硅谷居士也做过功课，他说过投资全球不如投资VOO, VGT, 因为美国大公司就是全球公司。
论据如下：
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.
