The Spread Woke Up
A credit spread is the extra yield an investor is paid for holding a company's debt instead of a government's. When that extra yield is thin, the market is saying it expects almost no companies to fail. For most of September it was very thin: high yield spreads sat in the bottom tenth of their own 3yr history while the government curve was repricing upward. Last Thursday this column read that divergence as a case where credit was right about company cash flow and the price of government money was the side that had moved too far. That reading has now been tested, and it has not passed. Spreads have widened for six consecutive sessions, and they have widened faster than the rates move that was supposed to be the whole story. The rest of this piece is about how far the move has gone, which parts of the market have confirmed it, and what is still missing before it becomes something larger than a repricing.
6 sessions, one direction
High yield OAS closed at 3.08% on 29 September, from 2.68% on 22 September. That is 40 basis points in 5 sessions, and the sequence has not once gone the other way: 2.68% on 22 September, 2.73% on 23, 2.80% on 24, 2.93% on 25, 3.02% on 28, 3.08% on 29.
Six consecutive widening prints is the first thing this market has done in the sequence that is consistent in one direction.
The level is not extreme. At 3.08% the index sits at the 53.9th percentile of its history since October 2023 - almost exactly its median. On 22 September it was at the 8.7th percentile. The repricing has taken high yield from the bottom tenth of its range to the middle of it, which is where the last widening ended: the series' low is 2.59%, set on 22 January 2025.
It is the widest close since 7 April 2026, when the spread printed 3.12%. Over the window from 1 July to 29 September the range is 2.60% to 3.08%, and 29 September is the top of it.
This time credit is leading, not lagging
The previous three columns read a widening rate move and a spread index that would not mark it. That relationship has flipped.
The 10yr is 5.293% on the 30 September close, up 17.9 basis points on the week. High yield OAS added 40 basis points over its 5 sessions. For the first time in this sequence the compensation for default risk is rising faster than the risk-free rate it is measured against.
The shape of the curve has not changed the argument. The 2s10s is 41.3 basis points, the 2yr is 4.88% and the 3M is 4.20% (both 30 September). The 10yr real yield is 2.933%. None of those is a new extreme against what the last fortnight already carried. The new information is in the spread, not the yield.
Every rung moved, investment grade included
Investment grade OAS went from 0.77% on 22 September to 0.84% on 29 September, 7 basis points wider and from the 13.8th percentile of its history to the 49.9th.
High yield and investment grade have converged on the same place: the middle of their own distributions. 10 days ago both sat in the bottom decile. That is the cleanest description of what has happened - not a credit event, a re-rating from the tight end to the centre.
The rungs moving together is what makes this a repricing rather than an idiosyncratic blow-up in one issuer or one rating tier. What would change the read is a split between them, and there is none in the 29 September prints.
The funds have already marked it
Last Thursday the listed credit funds were drifting higher against a widening curve, and that was the anomaly. This week they are not.
HYG is 77.21, down 0.89 on the week. JNK is 92.75, down 1.22. LQD is 102.18, down 1.71. All three closed lower on 30 September as well, HYG by 0.15 and JNK by 0.16.
The cash market and the fund market are now saying the same thing on the same week, which they were not doing a week ago.
Equity is not the confirmation
VIX closed at 16.34 on 30 September, up 1.16 on the week, in the 11.1st percentile of its own history. The S&P closed at 7,651.54, down 19.30 on the day and 54.49 on the week. The QQQ closed at 739.77, up 1.84 on the day.
Rate volatility is the market that is moving. MOVE is 110.45, up 15.00 on the week and in the 63.7th percentile, against equity volatility in the bottom sixth.
A credit spread widening into rate volatility with equity volatility near the floor is a price-of-risk event, not a growth event. That distinction is what keeps the size of the move meaningful without making it systemic.
The cash flow has not turned
Initial claims were 197,000 in the week to 19 September, from 198,000 in the week to 12 September (as of 19 September). Continuing claims were 1,719,000 in the week to 12 September, from 1,717,000 in the week to 5 September (as of 12 September).
Those are still the low end of their own history - claims sit in the 2.4th percentile of the series back to 1967, continuing claims in the 11.5th.
Spreads widen before defaults because defaults are the last thing to happen, not the first. Nothing in the labour data yet corroborates the spread move, and that is normal at this stage rather than reassuring.
Funding is not the trigger
Overnight secured funding is 3.88% against an administered rate of 3.90% on 1 October - a spread of minus 2 basis points. RRP take-up is $11.5bn on 30 September, from $0.46bn on 23 September. Reserves are $2,930.2bn as of 23 September.
A credit repricing that arrives with funding inside the administered rate and reserve balances flat is a price event, not a collateral or liquidity event. The trigger is in the price of risk, and the plumbing is quiet.
What would settle it
The confirmation is straightforward: another widening week with the fund complex following and rate volatility above 110, while claims stay under 200,000. That combination is a credit repricing that has not yet become a default cycle.
The first invalidation is reversal rather than level - high yield OAS back through 2.93% with the rungs converging again on the tight end. That would make the last 6 sessions an air pocket inside a compression trade that is still intact, and it would reopen the divergence argument on the other side.
The second is a break in the cash flow rather than in the price: initial claims through 210,000 with continuing claims through 1,760,000 would say the spread move has found the thing it was pricing. Until one of those lands, the composite still reads TIGHTENING at 0.376 on 5 of 5 sub-indices, with Rates & Policy dominant and Credit & Stress close to flat - the index that measures this complex has not yet registered the 6 sessions that moved it.
| TENOR | LEVEL | 1D Δ | Z (3Y) | RANGE %ILE |
|---|---|---|---|---|
| 2Y | 4.610 | -0.060 | +1.39 | 78 |
| 5Y | 4.780 | -0.070 | +2.24 | 86 |
| 10Y | 4.980 | -0.070 | +2.51 | 84 |
| 30Y | 5.320 | -0.050 | +1.99 | 83 |