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A 30% increase in one year, across only 3 companies, seems like a of a stretch. Especially given current economic/etc climates.
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> 30% increase in one year

30% above the average. Households bought $1.6 trillion in Q3 of 2025, for example. (Foreigners bought a further $650 and $700 billion in Q3 and Q4, respectively.)

American capital markets are ridiculously deep.

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> capital markets are ridiculously deep.

American market valuation is more than twice the entire US GDP. So ridiculous is a good description of what's going on.

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> American market valuation is more than twice the entire US GDP

Stock versus flow.

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Everyone knows one is stock and the other is flow. It doesn't mean that we can't measuring the ratio between them. Actually, measuring ratios between "stock" and "flow" values is one of the favorite things analysts and economists do! (e.g., rent vs house price, P/E, fixed cost vs marginal cost...)

There is even a name for marketcap/GDP, Buffett Indicator. And historically the current value is very high.

[0]: https://en.wikipedia.org/wiki/Buffett_indicator

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A third of all spending is not fundamentally a stretch?
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> A third of all spending is not fundamentally a stretch?

Where did you get spending? That's net buying of stocks by non-financial Americans. It's the new money that has, on average, gone into the U.S. stock market from that section of investors every year. A third of it going into these new issuances doesn't need to break anything.

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Dumb question here, but would it necessarily mean the other stocks they might've bought (i.e. the rest of the market) will not get the cash infusion and will thus likely drop in valuation?
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> would it necessarily mean the other stocks they might've bought (i.e. the rest of the market) will not get the cash infusion and will thus likely drop in valuation?

¯\_(ツ)_/¯.

Almost certainly, to some degree. But that doesn’t mean anything has to drop. Just not rise, or not rise as much as it would have. Or potentially some other company that would have gone public or sold shares doesn’t do it now.

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> A third of it going into these new issuances doesn't need to break anything.

Other than it not going somewhere more productive. Are you willing to just bury 1/3 of your income in the back yard?

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