What are the benefits of having schg, qqm, and vgt in my portfolio? How would I allocate 100k for maximum growth and dividends? What are the differences between the funds? Do they compliment eachother? Or is there too much overlap

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What are the benefits of having schg, qqm, and vgt in my portfolio? How would I allocate 100k for maximum growth and dividends? What are the differences between the funds? Do they compliment eachother? Or is there too much overlap?