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?pwd=1234 Extraction code: 1234 When choosing big data index funds, you can consider the following factors: First, Understand the fund's tracking index and ensure that it is related to big data; secondly, pay attention to the fund's size, fees and historical performance; thirdly, study the experience and expertise of the fund management team; finally, consider the fund's investment strategy and risk control capabilities. Take these factors into consideration and choose a big data index fund that meets your investment goals and risk tolerance.