Spreads at a 17-month wide; Treasuries have their best day in years
The AI trade's unwind has become a cross-asset event — credit wider, bank capital repricing, Treasuries bid — which is the shape a real risk-off takes.
Bloomberg's global corporate bond index widened to 129bp on Friday, its widest since May 2025 (Bloomberg). Asian high-grade dollar spreads reached their widest since last July; the regional CDS index opened 1.5bp wider at 78, China tech 3–5bp wider, Korea and India investment grade 3bp. None of these is a large number. Together they are the first time this month the AI selloff has shown up in credit outside the AI names themselves.
The other side of the trade is where the money went. Treasuries had their best day in more than two years, with buying across the curve and a rush to cover shorts in futures. The 10-year is at 4.97% this morning, below 5% for the first time in a month; the 30-year is 5.29%; the long-bond ETF rose 1.9% on Thursday. This matters for our reading. The rate shock that drove October's editions was the thing most likely to break something. A rally driven by fear of AI debt eases it, for now.
The funding end of the bank system is moving too. The average spread on Bloomberg's index of contingent convertibles — AT1s, the riskiest bank capital — has risen to 253bp from below 200bp in August and September, the first time it had ever been that tight (Bloomberg). BNY Mellon's latest preferred priced 32.4bp wider than an essentially identical deal three months earlier, a Belfius AT1 was indicated below par immediately after issue, and orders for Banco BPM's deal shrank while the book was open. Banks are paying a concession to sell capital that was being thrown at them in the summer.
Then the caveat. The high-yield spread we hold (21 October) is 327bp, tighter on the day and nowhere near the 800bp trigger, and the 129bp global figure is an investment-grade index. What has widened is the premium on the safest corporate debt and the riskiest bank debt at the same time, while the middle has not yet printed. Each camp has a champion: Ken Griffin says AI is almost certainly a bubble, Blackstone's Jon Gray says demand is "almost parabolic". This week the spread index moved toward Griffin.