Subject: Re: 90/10 or 10/90?
What allocation would you say is about optimal for...a three component portfolio consisting of T-Bills, BRKB and all of your other stocks combined?

OK, I'll go first

Right now my long-term living expenses nest egg is at ~50% BRK and ~24% each laddered T-bills and all other equities, with ~2% cash*

To paraphrase Sir Winston, I view it as the worst possible allocation, except for all the others.

I sleep at night.

--sutton
(*Plus another 2-3 years' living expenses buried under various other rocks e.g. iBonds)