[Cheese48923846]

I would not completely exclude big tech. Hold a cap weighted index as the core position. Soften the tech concentration with value tilts.

For the US stock sleeve of your portfolio you might try

    75% VTI  #core position. cap weighted total US market
    10% AVLV #tilt large cap value
    15% AVUV #tilt small cap value

No guarantees this outperforms 100% VTI, but it achieves the goal of softening the big tech concentration.

Don't forget international. A good way reduce your big tech allocations

    80% VEA  #intl developed
    20% VEXC #intl emerging, ex-China

Put it all together with a 60/40 US/intl split

    VTI 45
    AVLV 6
    AVUV 9
    VEA 32
    VEXC 8

The blow of a SpaceX pump-n-dump is a drop in the ocean on this portfolio. In addition, only free float SpaceX shares will be bought by the index which is a fraction of all of SpaceX. Even a more concentrated S&P500 portfolio would not get hurt too much by the pump and dump.