I own broad index funds. I expect that at some point, Uber will be added to the index that the funds track, so the funds will buy Uber. The basic reasoning her

I own broad index funds. I expect that at some point, Uber will be added to the index that the funds track, so the funds will buy Uber. The basic reasoning here just boils down to market consensus that Uber is worth $x billion, and I don't really have any reason to think that I can outguess the market consensus.