I am curious on people's thoughts on evenly divided portfolio of 4 Vanguard funds. I know the popular one is "only 2 Vanguard funds are needed for the equity side of the portfolio: Vanguard Total Stock Market Index (VTSMX/VTSAX/VTI) and Vanguard Total International Stock Index (VGTSX/VTIAX/VXUS)". In addition to the 2 funds, how about another 2 Vanguard Funds: Vanguard Small Cap Value Index (VISVX/VSIAX/VBR) and Vanguard FTSE All-World ex-US Small Cap (VSS)?
An even split would lead to:
25% VTSAX
25% VTIAX
25% VSIAX
25% VSS
A morningstar Portfolio X-ray yielded the 9-box result:
13-13-13
11-11-8
16-11-5
I noticed that VSIAX is different than other small cap value funds and ETFs. In order to keep turnover low and trade less frequently, it owns stocks that are in the categories of small-cap blend, small-cap growth, mid-cap value, and mid-cap blend. I believe (though not sure) that all the stocks that VSIAX purchased were classified as small-cap value at the time of purchase. Thus, I view VSIAX as a small-cap U.S. stock fund that tries to be as small-cap-valuey as possible while striving to keep turnover low.
VSS is well-diversified at 3000+ stocks.
Thus, I wonder if anyone else has considered this 4-Vanguard-fund allocation for the equity side of their portfolio. Does this give the small-cap tilt and the value-tilt that one desires all while maintaining broad diversification and keeping costs low?