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Comment by jmyeet

8 hours ago

Not to repeat myself, but I'll point to earlier comments about what's going on with interest rates [1].

For some context here, it's worth mentioning the Yen carry trade [2]. This is actually relevant because it allegedly underpins the AI investment boom [3] and the Yen appreciating is a real problem for investors who borrowed Yen to invest, particularly if it's into a bubble that may well pop. It's a double shammy.

I'm wondering if this is going to be another George Soros moment. Soros famously broke the Bank of England who were trying to maintain a rate for the pound [4]. If massive AI investment is fueled on the Yen then there's a pretty big icentive to break the Yen by investors. This administration would normally be on board with that sort of thing (and actively profit from it) so it's not yet clear to me what's going on.

[1]: https://www.investopedia.com/ask/answers/08/george-soros-ban...

Good reminder that exactly this time last year we had a big blow up that was short lived and blamed on the yen carry trade.

OK, let me restate that, since I had to think about it for a bit to see what you were getting at:

The yen carry trade is when you borrow yen (at ~0% interest), convert to dollars, buy assets in dollars, those assets hopefully appreciate, but they don't have to appreciate all that much because you were able to buy them on leverage with no interest.

But the other way to win on that trade is if the yen becomes cheaper while you were holding dollar-based assets. So those who are currently in the carry trade (that is, have borrowed yen) would not mind if the yen suddenly became dramatically cheaper.

I think that's a longer form of what the parent is saying.