I disagree. I think focusing on only owning/investing in "All-Stars" is a non-diversified investing strategy Only if you want to abuse the term "diversified in

I disagree. I think focusing on only owning/investing in "All-Stars" is a non-diversified investing strategy Only if you want to abuse the term "diversified investment strategy" to the point where it becomes meaningless. When we say you should have a diverse portfolio it does not mean "diversely spread between good assets and crap assets". You should only buy good assets. But you should buy multiple good assets, largely to protect yourself from the fact that what you think is a good asset may in fact be crap. Look, I understand you're trying to be contrarian here, but "diversify your assets" isn't a point that leaves a lot of room for contrarianism.