Comment on $1.8 trillion was wiped out from the US stock market yesterday, where did it go?

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ilinamorato@lemmy.world ⁨1⁩ ⁨day⁩ ago

The mortgage example is a little bit different. True, that money “didn’t exist” before you signed the loan (loans do increase the money supply), but it’s still “real money” inasmuch as it’s secured by the asset that is your home, and backed by the other assets that the bank holds (i.e. other people’s secured mortgages), and pays out real, actual, spendable cash, since the builders still need money to buy two-by-fours, for instance. The person who pays the mortgage probably never actually touches any of that money, but it still has at least some basis in reality. Fractional reserve banking feels kind of stupid, but it’s been around for long enough to be a plot point in It’s A Wonderful Life, more or less with no major issues.

With the stock market (and pretty much all speculative markets), it’s different. That money exists even less than it exists for a mortgage transaction; speculative markets don’t increase the money supply the same way that bank loans do, because the money isn’t based on anything in the real world at all.

To illustrate: a stock can lose value without anything changing hands at all. If you buy a stock for a hundred real dollars on Monday and that company does something stupid on Tuesday, your share could lose half of its value even though nothing changed hands that day. If you sold that stock on Wednesday, you might get only $50 of real money back. “Where did the money go?” Nowhere. I mean, functionally, the person (or bank or whatever) from whom you bought the stock on Monday still has the other $50, but they didn’t steal it; it’s just that now, there’s nobody who wants to spend $100 to buy it from you anymore. That money isn’t secured by anything or backed by any objective source of value. It’s entirely subject to whims and vibes, which economists call “market forces” to feel better about themselves.

When people talk about “market value,” it’s those whims and vibes they’re talking about: how much people are willing to pay for shares. There are X-million shares out there which people are willing to buy for $Y each; multiply those two numbers and you get the total market value. So when a market “loses value,” it doesn’t mean that any actual money has gone anywhere, it means that nobody wants to spend that much to buy into the market anymore; Y has just gotten smaller. If every bank account in the world was suddenly frozen and no money could move anywhere, the market could (and almost certainly would) still lose value.

Now, in all likelihood a good chunk of money has actually gone somewhere in addition; the people who shorted the stock and who sold early while it was still worth a lot are the ones who have it now. But that’s not where it was lost, because that’s not what “market value” actually measures.

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