I mean should I move more into funds with international or bond positions, etc. based on the current holdings of the fund I'm in. To me it seems pretty darn spread out, but putting my eggs into one basket always gives me pause.
According to the marketing snapshot
, the fund holdings on 11/30 were:
Vanguard Total Stock Market Index Fund Investor Shares - 42.4%
Vanguard Total Bond Market II Index Fund Investor Shares - 31.9%
Vanguard Total International Stock Index Fund Investor Shares - 17.7%
Vanguard Total International Bond Index Fund Investor Shares - 8.0%
So you have exposure to a big US stock market index, a big US bond market index, and the non-US equivalents of both. This is plenty diversified for most with respect to stock vs. bond and US vs. non-US holdings.
The only nondiversified part here is that everything is Vanguard. There's more complexity there but if you are concerned about international and/or bond positions, it looks like you got 'em already.