The Global Monetary Reset Has Begun (Hint: Korea, Japan are Just the Start)

The intervention nobody expected

The opening evidence is a first-in-a-generation event: the United States and Japan conducted joint foreign-exchange intervention — something they haven't done together in almost 30 years. The sequence Felix lays out is clinical. Step one: the yen hit a 40-year low near 160 to the dollar. Step two: Japan spent roughly $53 billion in a single day buying its own currency. Step three: the U.S. joined in, with the New York Fed buying yen for the Treasury, partly funded by selling euros. Add a leaked Bessent notepad reading "Buy Japanese yen 5 to 10 billion," and the picture is unmistakable: two governments coordinating to stop a currency freefall.

How the carry trade blew up

The yen's collapse was never just about the yen — it was about the enormous carry trade built on top of it. The mechanics are simple once stated: borrow yen at near-zero rates, sell it, buy higher-yielding U.S. assets. It works beautifully until the funding currency strengthens. A rising yen triggers margin calls, which force selling of U.S. assets, which strengthens the yen further — a feedback loop that feeds on itself. When it let go, roughly $1 trillion of U.S. equity value was erased in about 40 minutes. That is not an orderly repricing; that is a structure unwinding all at once.

Korea: the canary in the coal mine

The first casualty beyond Japan was Korea. The KOSPI suffered roughly a 30% crash in a month — its worst month on record. Felix treats Korea as the canary: the first emerging market to choke on a reversing carry trade, and a warning that the stress isn't contained to Tokyo. Korea and Japan, in this telling, are "just the start" — the opening acts of a global monetary reset, not isolated accidents. The stress travels through the same dollar-funding channels that carried the cheap money out.

Why yen stress is Treasury stress

The link that turns a currency story into a U.S. problem: Japan is the largest foreign holder of U.S. debt. If defending the yen forces Japan to keep liquidating Treasuries, the selling lands on the very bond market that prices $40 trillion of American borrowing. Currency stress and debt stress are the same stress. This is why the intervention matters more than it looks — Washington wasn't defending the yen out of charity; it was defending the bid for its own debt. Lose the largest foreign buyer and every Treasury auction gets harder, yields push higher, and the refinancing math for the whole debt machine gets uglier — which is precisely the spiral the intervention was designed to prevent.

The defense plan

The prescription that follows is threefold. First, don't hold too much cash — the reset is fundamentally about debasement, and cash is what's being debased. Second, own hard assets with pricing power: things that can raise prices when currencies weaken, rather than deposits that quietly melt. Third, within the AI theme, buy the pickaxe sellers — the infrastructure and input businesses that get paid regardless of which AI lab wins — rather than the hyped chip names at the center of the euphoria.

The takeaway

Felix's thesis in one line: the joint intervention, the trillion-dollar unwind, and Korea's collapse are the opening moves of a global monetary reset, with the carry trade as the transmission belt and Japan's Treasury holdings as the fuse leading back to Washington. The defensive move isn't to hide in dollars — it's to own the scarce, price-raising assets that survive debasement while the cheap money runs home.