Global Rates
ECB Sep hike
95.5c
+1.0, verified at source. A 25bp increase on Sep 10 is now effectively fully priced; No change at 4c
BoJ Sep hike
87.5c
Unchanged, verified at source. Still our completed miss: flagged at 40c on Aug 3, refused at 42.5c on Aug 10
Fed Sep hike
33.5c
+1.0; No change 65.5c. FedWatch unverifiable at source for a fourth session — carried FV withdrawn
10Y Bund
3.2550%
+0.5bp, still near the highest since 2011. Gilt 5.0676% (+1.5bp), above 5%
10Y JGB
2.8950%
-0.5bp from a 1996 high, with a September BoJ hike priced at 87.5c. USDJPY 159.43
10Y US Treasury
4.7050%
+0.4bp. 30Y 5.23%, 2Y 4.25%. Brent $91.58 (-0.6%), WTI $84.43
The global long end is doing the same thing everywhere this morning, which is almost nothing, and that is the first genuinely quiet session in a fortnight. The Bund is 3.2550%, up half a basis point and still near its highest since 2011. The 10-year JGB is 2.8950%, down half a basis point from a level last seen in 1996. The gilt is 5.0676%, up 1.5bp and comfortably above 5%. The US 10-year is 4.7050%, up 0.4bp. Four major sovereign curves, four moves of under two basis points, all verified at source. The policy legs moved in lockstep too, and by exactly the same amount. ECB September is 95.5c, up one point from 94.5c: a 25bp increase on September 10 is now effectively fully priced, with No change at 4c. BoJ September is unchanged at 87.5c for the 25bp increase against 12.5c for no change. The Fed's September meeting is 33.5c for a hike, up one point, with No change at 65.5c. Every leg one point higher or flat, nothing repriced, no new information. The divergence story we have been running for three weeks is now mostly a level story rather than a direction story. Europe and Japan are hiking and the market knows it, at 95.5c and 87.5c. The Fed is priced at one-in-three for September and about four-in-seven for the full year, at 56.5c. The three central banks are no longer disagreeing about the direction of policy; they are disagreeing about the timing, and the market has settled on Frankfurt first, Tokyo second, Washington last. That is a much less interesting divergence than the one we described in early August, and we would rather say so than manufacture drama out of a one-point session. Which leaves the correction, and it belongs in this letter too because pos-017 is the only position in the book with a genuinely global thesis. Yesterday we ended the equivalent section with a consistency check: the same barrier model applied to the 10-year 5.00% leg returned about 16 against a 16.0c market, therefore our sigma was not flattering the 4.8% leg we own. We could not reproduce it this morning. With the 10-year at 4.7050% the 5.00% barrier is 29.5bp, 92 business sessions remain, sigma is 38.37bp, and 2*(1-Phi(29.5/38.37)) gives 44.2% raw and 40 after the buyback haircut. The market is 17.5c. So we are freezing fair value on pos-017 at 72, not raising it to the 73 today's arithmetic offers, and we are refusing the 5.00% leg outright despite a nominal 22-point gap that is more than twice our entry bar. The reason is mechanical rather than modest: a fixed-volatility barrier model over-prices far touches because it assumes yields wander freely, when a 30bp grind to 5.00% in any of these four markets would summon exactly the response that stops it. We have seen three of those responses this month alone, the US Treasury doubling long-end buybacks, the joint yen intervention funded by selling euros, and the request to raise the Fed's FIMA limit. Our own 4.8% leg is 9.5bp away and the market broadly agrees with us at 67c; the 5.00% leg is where the model's tail assumption does all the work and we think the market's 17.5 is closer to right than our 40. The global corroboration for the position itself has not weakened. The long-end repricing is not a US fiscal quirk: Berlin is issuing 30-year paper at 2011 yields, Tokyo's 10-year sits at a 1996 high with a September hike at 87.5c, London is above 5%, and the US buyback window runs September 9 to November 4 while our barrier runs to December 31. The intervention expires before the position does. What has weakened is our confidence in the number we attach to that thesis, which is a different problem and a more embarrassing one. Yen at 159.43 against the dollar, unchanged in tone if not in level, with the Nikkei up 0.47% and the DAX up 0.42%. No trades in this book today. Timing disclosure: this letter went out at 10:25 Stockholm, before the US cash open and about six hours earlier than our usual slot, so every US price here is an overnight mark.
Today's Market Moves
ECB Sep 25bp hike
94.5%→95.5%+1.0pp
Effectively fully priced now, with No change at 4c. There is no trade left here in either direction: buying a 95.5c contract to earn 4.5c on a September 10 decision is a poor use of $25, and selling it means fading a decision the ECB has all but pre-announced. We watch it as the reference point for how a determined hiking central bank gets priced when the market believes it.
BoJ Sep 25bp hike
87.5%→87.5%0.0pp
Unchanged, and still the cleanest miss in this book's history. We flagged it at 40c on August 3 and declined it at 42.5c on August 10 on liquidity grounds, in a market that has since more than doubled. We keep printing that because a miss you stop mentioning is a miss you stop learning from. The 10-year JGB at 2.8950% is the corroboration we did not act on.
Fed Sep 25bp hike
32.5%→33.5%+1.0pp
A one-point drift with no news behind it. The change today is on our side of the ledger, not the market's: we are withdrawing the carried fair value of 36.6 as indefensible after a fourth session of being unable to verify FedWatch at source, and publishing instead the only figure we can date, roughly 31.6 from a third-party reading of CME data on August 20, labelled stale. That inverts the gap to -1.9pp.
10Y Touches 5.00% Before 2027 (watchlist)
16.0%→17.5%+1.5pp
The leg we used yesterday to validate our own model, and the leg that broke it. Our arithmetic says 40 after the haircut; the market says 17.5. We are siding with the market and refusing a 22-point nominal gap as evidence of model error rather than edge. Standing rule added today: no pos-017 fair-value increase until this check reproduces.
10Y Bund
3.2502%→3.255%+0.0048pp
Half a basis point, near a 2011 high. The relevant fact is not the move but the level: Germany, the sovereign the euro area treats as its risk-free anchor, is issuing long paper at yields nobody has had to underwrite in fifteen years. That is the term-premium story our pos-017 rests on, expressed in a market with no US fiscal problem at all.
10Y JGB
2.9%→2.895%-0.005pp
Down half a basis point from a level last seen in 1996, with USDJPY at 159.43. Japan is the cleanest test of whether long-end repricing is global or American, because its fiscal and demographic story is unrelated to Washington's. It keeps answering global.
Screening Table
| # | Market | Expiry | Market Price | Fair Value | Gap (pp) | Direction | Volume | Confidence |
|---|---|---|---|---|---|---|---|---|
| 1 | 10Y Touches 4.8% Before 2027 | Dec 31 | 67.0% | 72% | +5.0pp | SELL YES | $$60K on the leg | 5/10 |
| 2 | 10Y Touches 5.00% Before 2027 | Dec 31 | 17.5% | 40% | +22.5pp | NO TRADE — a 22pp gap we are refusing as model failure, not edge; fixed-vol barrier models over-price far touches | $$83K on the leg | 1/10 |
| 3 | ECB Sep 25bp Hike | Sep 10 | 95.5% | 95% | -0.5pp | NO TRADE — effectively fully priced; no edge in either direction | $$92K on the leg | 7/10 |
| 4 | BoJ Sep 25bp Hike | Sep 18 | 87.5% | 88% | +0.5pp | NO TRADE — our completed miss, published again; no edge left at 87.5c | $$118K on the leg | 6/10 |
| 5 | Fed Sep 25bp Hike | Sep 16 | 33.5% | 31.6% | -1.9pp | NO TRADE — FV stale (CME via third party, Aug 20) and flagged; correlation cap refuses it independently | $$9.8M on the leg | 2/10 |
Top 5 Opportunities
1
US 10Y Touches 4.80% Before 2027 — the check we used to defend this number will not reproduce — YES
↑ BUY YES+5.0pp
Market price
67.0%
Fair value
72%
Gap: +5.0pp
This is the only position in the book with a global thesis and it has had the worst week of documentation in the book's history. Wednesday we cut fair value from 74 to 60 on the Treasury buyback announcement. Thursday the market erased the move. Friday we reversed the cut to 70. Monday we raised it to 72 on a two-point mechanical adjustment and closed with a consistency check we described as showing our sigma was not flattering the leg. Today the consistency check does not reproduce and we are freezing the number. The arithmetic, stated so it can be checked. The US 10-year is 4.7050%. Ninety-two business sessions remain to December 31. At roughly 4bp of daily volatility, sigma is 38.37bp. For our own 4.8% leg the barrier is 9.5bp: 2*(1-Phi(9.5/38.37)) = 80.4% raw, and the buyback haircut of 0.9045 gives 72.8, which rounds to 73. For the 5.00% leg the barrier is 29.5bp: 2*(1-Phi(29.5/38.37)) = 44.2% raw, 40 after the same haircut, against a market of 17.5c. Yesterday we published 16 for that second calculation. We get 40 today and we have no account of the difference. Freezing fair value at 72 rather than taking 73 is a small decision. Refusing the 5.00% leg is the expensive one, and it is the right one. Twenty-two points is more than double our entry bar and it would be the easiest trade to justify in the letter. But a fixed-volatility barrier model over-prices far touches by construction: it assumes the yield path is unobstructed, when in reality a 30bp grind toward 5.00% calls forth the response that prevents it. We have watched three such responses this month, the US doubling long-end buybacks with a reported general-account war chest approaching $1trn behind it, the joint yen intervention funded by selling euros, and the request to raise the Fed's FIMA limit. None of that is in our sigma. Our 4.8% leg survives the objection because the barrier is inside ordinary weekly noise and because at 67c the market broadly agrees with us; the 5.00% leg is entirely a tail bet, and on tails our model is now the less credible of the two prices. The global evidence for the underlying thesis is unchanged and does not depend on the model. Bund 3.2550% near a 2011 high, JGB 2.8950% at a 1996 high, gilt 5.0676% above 5%. The buyback window runs September 9 to November 4; the barrier runs to December 31. Warsh's stated preference for balance-sheet tightening over rate hikes, if confirmed at Jackson Hole on Friday, is a long-end steepener and helps this position through a channel that has nothing to do with the funds rate. Gate unchanged and not raised: sell on a 66c BID. The bid is 65c today, one point away and one point closer than yesterday. Exit below 10c only if the 10-year is under 4.25%.
▵ Bull case
- Barrier is 9.5bp with 92 sessions to run, less than three days of ordinary 10-year volatility.
- The repricing is global — Bund at a 2011 high, JGB at a 1996 high, gilt above 5% — so it does not depend on a US fiscal story.
- The Treasury buyback window expires Nov 4 and the barrier runs to Dec 31, leaving eight unprotected weeks.
- Warsh's apparent preference for accelerated QT over rate hikes steepens the curve at the long end.
▿ Bear case
- Our model failed its own consistency test on a neighbouring leg today, which is a reason to distrust the 72 as well as the 40.
- Reported general-account capacity near $1trn dwarfs the announced $4bn per operation and could suppress the long end far harder than we assume.
- Crude has fallen 2.7% in two sessions and the 10-year has been tracking it lower, moving the barrier further away.
- The single largest input, 4bp of daily volatility, is an assumption we have never independently validated.
2
ECB September Hike — what a fully priced central bank looks like — YES
↑ BUY YES-0.5pp
Market price
95.5%
Fair value
95%
Gap: -0.5pp
Up another point to 95.5c, with No change at 4c. There is nothing to trade here and we screen it anyway, because it is the calibration point for the other two legs in this letter. This is what the market does when a central bank has effectively told it the answer. Frankfurt goes on September 10 and the only residual is the 4.5c of tail risk that always survives, covering an accident, a shock, or a communication error in the intervening fortnight. Buying at 95.5c to earn 4.5c on a two-week binary is a poor use of a $25 ticket by any Kelly arithmetic we would accept; selling it means fading a decision that has been all but pre-announced by an institution with a fresh inflation problem and a currency it has just spent euros defending. The useful comparison is with the Fed at 33.5c for September. Both institutions face inflation above target. Both have hawkish majorities. The 62-point difference is not a disagreement about direction, it is a disagreement about how much a central bank has committed itself in public, and it is a reminder that these contracts price communication at least as much as they price economics. Warsh speaks Friday and the Fed leg is the one that can move on it.
▵ Bull case
- Euro-area inflation is above target and the ECB has communicated a September move about as clearly as it can.
- The euro was sold as the funding leg of the joint yen intervention, which adds an imported-inflation reason to tighten.
- No change sits at 4c, so the market sees essentially no policy path other than a hike.
- Bund at 3.2550% near a 2011 high is consistent with a curve that expects tightening, not an accident.
▿ Bear case
- At 95.5c the contract pays 4.5c against a 95.5c loss if anything goes wrong — an asymmetry we will not accept for $25.
- Two weeks is long enough for a genuine shock: Hormuz, a credit event, or an energy spike.
- $92K of lifetime volume means the quoted price is thin relative to the confidence it implies.
- A fully priced decision has no information left in it, so it teaches us less than the price movement suggests.
3
BoJ September Hike — unchanged at 87.5c, and we publish the miss again — YES
↑ BUY YES+0.5pp
Market price
87.5%
Fair value
88%
Gap: +0.5pp
Flat at 87.5c against 12.5c for no change. We keep this in the top five on a session when it did not move, because it is the clearest completed miss this book has produced and the rule we set for ourselves is that a miss gets published as prominently as a win. The sequence, in full, every time: on August 3 we flagged the September BoJ hike at 40c and wrote that the JGB curve was already pricing a policy shift the contract had not caught up with. On August 10 we screened it at 42.5c and declined on liquidity grounds, arguing that a market doing five figures a day could not absorb a meaningful ticket. It is 87.5c now. A $25 entry at 42.5c would be worth roughly $51 today. We were right about the direction, right about the mechanism, and we did not take it. The liquidity objection was not wrong in itself, and that is the uncomfortable part. Volume on the leg is $118K lifetime, which is genuinely thin, and our own correlation and sizing rules exist precisely to stop us pretending otherwise. What we got wrong was the conclusion: the right response to a thin market with a clear edge is a smaller ticket, not no ticket. A $25 stake in a $118K market is not a liquidity problem, it is a rounding error. We have not yet changed a written rule on the back of this, and until we do it stays here in the letter as an open item rather than a resolved one. There is no trade left at 87.5c: our fair value is 88 and half a point is not an edge. The 10-year JGB at 2.8950%, near a 1996 high, is the corroboration we correctly identified and did not act on.
▵ Bull case
- The 10-year JGB at 2.8950% is at a 1996 high, which is a curve that has already priced the shift.
- USDJPY at 159.43 keeps imported inflation pressure on the BoJ despite the joint intervention.
- The BoJ has moved gradually but consistently, and the September meeting fits the established cadence.
- No change at 12.5c leaves little room for the market to be surprised in the other direction.
▿ Bear case
- At 87.5c against our FV of 88 there is no edge left; the money in this market was made between 40c and 87.5c.
- $118K lifetime volume is genuinely thin and our original objection was not baseless, only wrongly concluded.
- A yen that strengthens sharply on intervention reduces the imported-inflation case for moving in September.
- We have already shown poor judgement on this specific market, which is a reason for humility rather than a second attempt.
4
Fed September Hike — we withdraw our own fair value and publish a stale one instead — YES
↑ BUY YES-1.9pp
Market price
33.5%
Fair value
31.6%
Gap: -1.9pp
Sixth consecutive refusal, and today the reason changes, so it is worth stating rather than repeating. The market is verified at source: 25bp increase 33.5c, No change 65.5c, 25bp decrease 1.35c. Our fair value is the problem. For three sessions we have written that CME FedWatch will not render at source and that we were carrying a fair value of 36.6 forward, flagged as carried. Today is the fourth session and the meeting table again would not load for us. The only datable figure we could find is a third-party reading of the CME data from August 20: 68.4% for no change, implying about 31.6% for a hike. That is five points below the number we have been carrying and it points the opposite way. So we withdraw the 36.6. It is not defensible to keep quoting a number whose provenance we cannot establish, especially when it happens to make a market we watch look cheap. We publish 31.6 instead, labelled clearly as a five-day-old third-party reading rather than a live one, and the gap inverts from +4.1pp to -1.9pp. On the only figure we can actually source, this contract is slightly expensive. The correlation cap refuses it independently and that remains the stronger argument. We already hold pos-010 on the 2026 hike, pos-011 on the year-end rate and pos-013 on zero cuts. Those are three expressions of one hawkish-Fed view. A September ticket would be a fourth leg of the same bet in a book we have repeatedly described as over-concentrated. Even a verified ten-point edge would have to argue past that, and we do not have one. Warsh speaks Friday. If he confirms that accelerated balance-sheet reduction, rather than the funds rate, is his preferred instrument, this contract can fall on hawkish news, because it only pays on the rate. That asymmetry is another reason to stay out of a market we cannot price.
▵ Bull case
- Tariff escalation plus core PCE at 3.29% is a live case for a September move.
- Three FOMC members dissented toward a hike in July, so the votes exist.
- The hike-by-October leg at 41.5c implies meaningful probability concentrated near this window.
- GDPNow at 4.0% for Q3 removes the growth objection to tightening now.
▿ Bear case
- We cannot verify our own fair-value input at source for a fourth consecutive session.
- The only datable reading, from Aug 20, implies about 31.6% against a 33.5c market — the gap inverts.
- Warsh may tighten via the balance sheet, in which case a hawkish Jackson Hole speech makes this contract fall.
- The correlation cap refuses it regardless: it would be a fourth leg of the same hawkish-Fed position.
5
The global long end — four curves, four moves under 2bp, and that is the story — n/a
↑ BUY YES0pp
Market price
0%
Fair value
0%
Gap: 0pp
We screen the long end itself rather than a contract, because on a session this quiet the levels are more informative than any price move. Bund 3.2550%, up 0.5bp, near the highest since 2011. JGB 2.8950%, down 0.5bp, at a 1996 high. Gilt 5.0676%, up 1.5bp, above 5%. US 10-year 4.7050%, up 0.4bp, with the 30-year at 5.23% and the 20-year at 5.22%. All four verified at source this morning. The useful observation is that these four markets have almost nothing in common on the fiscal side and are nevertheless sitting at multi-decade highs simultaneously. Germany runs a small deficit and is issuing 30-year paper at 2011 yields. Japan runs the largest debt stock in the developed world and a shrinking population, and is at 1996 yields. The UK has a fiscal problem of its own shape entirely. The US has AI-driven corporate issuance stacked on top of federal deficits. Four different causes, one shared outcome, which is what a global term-premium repricing looks like as opposed to four coincident national accidents. That is the whole basis for holding pos-017 through a US intervention, and it is the part of the thesis that our model failure this morning does not touch. We got the number wrong; we do not think we got the mechanism wrong. The distinction matters because it determines what we do next: we freeze the fair value and stop trading the model's tails, and we keep the position, which we would not do if the underlying story had broken. One US-specific caution to carry into Friday. The 10-year TIPS yield is 2.37%, which puts the 10-year breakeven at roughly 2.34% — a market that still believes inflation comes back to target over a decade, even with core PCE nowcast at 3.29% today. If Warsh's Jackson Hole speech dents that belief, the move in nominal yields comes from the breakeven rather than from the real rate, and it comes fast. If he reassures on it, the barrier gets further away. That is the single largest binary sitting between us and December 31.
▵ Bull case
- Four sovereign curves at multi-decade highs from four unrelated fiscal causes is a genuine global repricing.
- Germany issuing 30-year paper at 2011 yields is the cleanest evidence that this is not a US deficit story.
- Japan reaching 1996 yields with a September hike at 87.5c confirms the developed-market policy turn is broad.
- A 2.34% 10-year breakeven leaves considerable room for nominal yields to rise if inflation expectations slip.
▿ Bear case
- Coordinated intervention is now demonstrably available: buybacks, FX operations and FIMA capacity all deployed this month.
- Falling crude has pulled all four curves lower this week and could keep doing so if Iran de-escalates.
- Multi-decade highs are also where mean reversion arguments get their strongest historical support.
- A quiet session is a poor sample; four sub-2bp moves may simply be a market waiting for Wednesday and Friday.