How do I approximate Total US Stock Market Index using...

[golfallday]

...S&P 500 Index + S&P 400 Index + Russell 2000 Index? Can't find this anywhere. Thanks for any help or ideas.

[triceratop]

...S&P 500 Index + S&P 400 Index + Russell 2000 Index? Can't find this anywhere. Thanks for any help or ideas.

85% S&P 500 Index, 15% Russell 2000 Index

https://www.bogleheads.org/wiki/Approxi ... ock_market

I'm not sure that the S&P 400 Index is needed, but you could find a weighting that works with that as well I am sure. But, why?

[afan]

If this is a real life question, note that the performance of the total stock market is very well modeled by the S&P500 alone. You could just use that fund/etc and be done with it. If you feel the need to add mid and small caps, watch the fees. Many funds in this space charge so much that it would wipe out the advantage of having the exposure.

[whaleknives]

If this is a real life question, note that the performance of the total stock market is very well modeled by the S&P500 alone. You could just use that fund/etc and be done with it. If you feel the need to add mid and small caps, watch the fees. Many funds in this space charge so much that it would wipe out the advantage of having the exposure.

And, because of overlap, you can come within 1% of Total Stock Market in all style grids by using just 82% Vanguard 500 Index Fund (VFINX) and 18% Vanguard Small-Cap Index Fund (NAESX). Approximating total stock market