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by jfengel 2192 days ago
It is baffling, and I've been expecting a crash for a decade... which is the problem. The market can remain irrational longer than you can remain solvent.

Right now it's kind of persistently slightly irrational. A quick-and-dirty measure of its sanity is the P/E ratio: how much money are the publicly listed companies actually making? Right now, the number is around 22[1], meaning a dollar invested in the market takes 22 years to pay itself back purely in terms of corporate profits.

That's a return of about 3%. Numbers over 20 are generally considered a sign that the market is overheated. They peaked at around 45 and 65 right before the 90s and 2000s crashes. So there is revenue there, and not entirely out of line with stock prices, but not entirely line with them either.

None of that takes coronavirus into account; that's current price with last quarter's earnings. But if you assume that coronavirus is only temporary (it may not be, but let's be optimistic for a second) it means that long term the numbers are calling for a crash... eventually. One of these days. Longer than you can remain solvent while shorting it.

Probably.

In other words, I've got no idea what's going on. The markets have been weirdly stable (in price-to-earnings terms) for the past decade, at a number that's too optimistic, before coronavirus. Surely the inevitable at-least-short-term loss of earnings should have corrected that, but it hasn't. So either people are thinking very long term, or they're just nuts.

[1] https://www.multpl.com/s-p-500-pe-ratio

2 comments

I've started ignoring P/E because , among other reasons, it doesn't account for cash reserves. If you have two similar companies, but one is sitting on more cash, it should be worth more, but its P/E makes it look overpriced relative to the other.
People have been writing stuff about short-termism being the bane of the economy for a long time; maybe it's worth reconsidering the idea that prices reflect estimated total future profits and not the next quarter? Could short-termism be a myth?