I agree with using a TSM fund rather than an S&P 500 index, but be aware that you're still mostly holding S&P 500 companies. The S&P 500 covers about 80% of the

I agree with using a TSM fund rather than an S&P 500 index, but be aware that you're still mostly holding S&P 500 companies. The S&P 500 covers about 80% of the total market cap of US public companies, whereas the Russell 3000 is 98%. (This is, of course, because the 500 largest companies are so much larger than the median.) If you really want to diversify away from the biggest growth companies you could try a value and/or small/value tilt. Those might all be good advice, but they do come with their own caveats, whereas using TSM instead of an S&P 500 fund is just good advice in general.