Approximating Total Stock Market

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Investors wishing to invest in Vanguard Total Stock Market Index Fund often face a situation where they have to approximate it with the funds available in their employer sponsored plans and quite possibly some other funds available in other accounts such as a Roth IRA.

This page shows a few examples of approximating Vanguard Total Stock Market Index Fund with funds covering specific parts of the market.

Examples

Funds Morningstar
Style Box
100% Vanguard Total Stock Market Index Fund (VTSMX) (0.15%)[1]
24 25 23
6 7 7
3 3 3
80% Vanguard 500 Index Fund (VFINX) (0.15%)
20% Vanguard Extended Market Index Fund (VEXMX) (0.24%)

Note: This 80/20 ratio is also shown on the Vanguard Benchmark Statistics page.
24 25 23
6 7 7
3 3 3
81% Vanguard 500 Index Fund (VFINX) (0.15%)
6% Vanguard Mid-Cap Index Fund (VIMSX) (0.21%)
13% Vanguard Small-Cap Index Fund (NAESX) (0.22%)
24 25 22
6 7 6
3 3 3
83% Vanguard 500 Index Fund (VFINX) (0.15%)
17% Vanguard Small-Cap Index Fund (NAESX) (0.22%)
25 26 22
5 6 5
4 4 4
86% Vanguard 500 Index Fund (VFINX) (0.15%)
14% iShares Russell 2000 Index (IWM) (0.20%)
26 27 23
4 4 3
4 4 5
82% Vanguard 500 Index Fund (VFINX) (0.15%)
11% iShares S&P MidCap 400 Index (IJH) (0.20%)
7% iShares S&P SmallCap 600 Index (IJR) (0.20%)
24 25 22
6 7 7
3 3 2
85% Vanguard 500 Index Fund (VFINX) (0.15%)
15% Vanguard Tax-Managed Small-Cap Fund Inv (VTMSX) (0.13%)
25 26 23
5 4 4
3 5 4
88% Vanguard Large Cap Index Fund (VLACX) (0.20%)
12% Vanguard Small-Cap Index Fund (NAESX) (0.22%)
24 25 23
6 7 7
3 3 3
  • These percentages were computed on Aug 16, 2008.
  • The style box numbers were computed by Morningstar Instant XRay.
  • Computation was done by the method of least squares.
  • Investors contemplating on using an S&P MidCap 400 fund, for example, may consider the example above that uses IJH. However, there may be slight implementation differences between the S&P MidCap 400 fund you have access to and IJH.
  • Two funds may appear to track the same portion of the market (say, mid-cap), but their holdings may differ depending on the indexes they track.

References

  1. Morningstar X-Ray of VTSMX (only) shows no change as of December 2010.
 
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