Edit, since I hit posting limit.
To pooper:
> Since it's such a big part of the S&P500
The conclusion is based on that premise, so any other business that satisfies that premise should also lead to the same conclusion.
To llm:
> I think their point is that businesses at the top of the S&P500 are traded at sentiment and momentum based values that are pretty disconnected from a logical P/E
I have read the same about other businesses many times. There is nothing logical about only using P/E as a factor in determining price (or “worth”). No one knows the future, so even a price derived from an arbitrary standard of P/E is a “sentiment and momentum based” value.
So index membership does change the stock multiple (but not by 10x).
Also, Tesla is an idiosyncratic stock with very high volatility and very high retail participation. Things can be true of Tedla stock which do not have to be true of the median stock.
Some stocks are overpriced, and others are undervalued. The inclusion in the S&P500 alone is just 1 of the factors.
In my opinion, Apple and NVIDIA are significantly undervalued based on their fundamentals, even though they make up a gigantic % of the SPX.
It could be logical to ascribe some value to a business’s leader having access to a US president known to be “open for business”? And we know a big tax bill is likely to be passed by year’s end.
Perhaps that will lead to good fortunes for Tesla shareholders. Or maybe not.
And the thing is, I don't have to be right about Tesla because I'm not making a single bet on that company. I'm making hundreds of bets using my methodology, and it's enough that I'm right 50-something% of the time (or even less than 50%, if we're talking Options trading).
That's what the whole stock market game is about. Hence, some investment companies, like Berkshire Hathaway, consistently make more than others over the long term.
Also, corrections aren't instant, so if the change of value was for something that had already happened, not something currently happening, the offer will reflect the expected price that the shares would settle at.
(apologies for the below crude metaphor.. but...)
I am 1.80. You can kick me in the nuts and I will fold, but I will still be 1.80 a few minutes later.
Let's see after the kick in the nuts if the price will still be $8.
When there is blood in the water the sharks start circling. And some sharks 'short'. And I know little about their operations of 23andMe, but I understand the _value_ of their data!!!!! So they may be sitting on a pile of Latinum and not be able to fully monetize it (sell it to every pharma/insurance/etc.) company on the planet.