IS THIS GRASS GREENER?
01/22/26 Prospero.ai Investing - 286th Edition (Mid-week)
Over the course of this week, markets gave us a good reminder of how easily narratives form and how often they miss the point.
When equities sold off and rates moved higher, most of the early commentary pointed to geopolitics. The Greenland situation became the explanation of record. Tariffs, Europe, alliance risk, retaliation. It sounded reasonable, and the price action seemed to cooperate. Gold was higher, the dollar softened, and the S&P was down more than 2 percent in a single session. By the end of the day, the story felt settled.
It should not have.
The real pressure came out of Japan.
Japanese government bonds sold off hard this week, especially at the long end. The moves were large and fast. The 10 year moved toward levels not seen in decades. The 30 year had its biggest daily move since the early 2000s. The 40 year traded north of 4 percent. What mattered was not the exact level but the message. Investors were no longer comfortable assuming the Bank of Japan would always step in and absorb risk.
The catalyst was domestic. Prime Minister Sanae Takaichi called a snap February 8 election and paired it with ambitious fiscal promises. Lower food taxes. More spending. All of this on top of a debt burden already well above 200 percent of GDP. Auctions were soft. Foreign investors, who now make up a large share of the market, stepped back. At the same time, the BoJ is trying to normalize policy. There was no cushion when selling started.
Once JGBs broke, the effects showed up quickly elsewhere. U.S. 10 year yields jumped roughly 13 basis points. That move alone is enough to explain most of what happened in equities. Higher rates raise discount rates, compress multiples, and hit growth stocks first. The equity selloff did not need a geopolitical trigger. The math was sufficient.
Greenland did not cause the move. It gave people something to talk about while it was happening. The narrative followed the price action rather than leading it. That became clear as rhetoric cooled later in the week and equities stabilized, even though the underlying bond market dynamics were still in play.
Ken Griffin addressed this directly in Davos, calling the Japan move a warning shot. His point was straightforward. Bond markets eventually enforce discipline when fiscal credibility is questioned. The U.S. is not Japan, but the mechanism is the same. We saw it in the UK in 2022 and we are seeing it again now.
The broader lesson matters. Macro and equities are no longer separate discussions. Bond markets, fiscal policy, and stock valuations are tightly linked, and the transmission happens quickly. In that environment, Prospero becomes an even more important tool to distinguish signal from noise in the equity market.
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