〔Day Digest〕Oil Back at $100 Sends UK 10Y to 19-Year High and German 30Y to 3.89%, With ECB's 25bp Hike to 2.5% the Day's Pivot - JGBs Above 3% Anchor the Global Long-End Selloff

0. Weekly Arc

The global long-end repricing that began last week has converged on a single driver: oil back above $100/bbl for the first time in six weeks, fanning inflation fears and pulling yields with it ^[1][2]. The UK 10-year hit a 19-year high, the 30-year was sold in syndication at the highest yield since at least 1998, Germany's 30-year reached 3.8981% (highest since April 2011), and France's 10-year hit 4.3443% (highest since October 2008) ^[1][3][4]. Yet Japan is doing the pulling, not the being pulled: the 10-year JGB broke 3% for the first time since September 1996, and Nomura's Takahide Kiuchi argues Japan is the source of the global move, with 10-year JGBs up roughly 140bp year-on-year versus about half that for Treasuries ^[5]. The ECB's 25bp move to 2.5% is the day's pivot, but Lagarde's language on what comes next is the trade ^[6][7].

1. ECB as Day's Pivot

• **[NEW] Bloomberg poll:** all but one analyst expect a 25bp hike in the deposit rate to 2.5% on Thursday, the second hike since the Iran war began ^[7].
• **[NEW] Goldman Sachs:** 25bp in September, base case is end of cycle, but a December hike risk rises if energy stays sticky, inflation re-accelerates, and the Fed tightens ^[6].
• **[NEW] ING:** 25bp, but a "dovish hike" - signals will not support the further tightening currently priced ^[6].
• **[NEW] Scotiabank:** 25bp with a relatively hawkish tilt to contain energy-driven inflation ^[6].
• **[NEW] Reuters poll:** 25bp, then stop; deposit rate held at 2.5% through end-2026 ^[6].
• **[NEW] Deutsche Bank:** 25bp now and another 25bp in December; 2.75% as the more likely terminal, with 2.5% as a ceiling if geopolitics ease ^[6].
• **[NEW] Danske Bank:** 25bp; Lagarde keeps full flexibility, does not pre-commit to a path, and will not push back on tightening expectations ^[6].
• **[NEW] Aberdeen economist Felix Feather:** hike is "almost a foregone conclusion"; rate could stay at 2.5% "for an extended period" if core disinflation holds and the energy shock does not generate broad second-round effects ^[8].
• **[NEW] Bottom line:** the hike is consensus; the deliverable is the dot in Lagarde's words on whether December is live ^[9][6].

2. BoJ: Japan as Source, Not Follower

• **[ESCALATED] 10-year JGB above 3%** for the first time since September 1996, an absolute 30-year high ^[5].
• **[NEW] BoJ member MASU:** need to assess whether financial conditions remain accommodative at a 1.25% policy rate; the September meeting will hold an in-depth discussion ^[10].
• **[NEW] 5-year JGB +1.5bp to 2.235%** ^[11].
• **[NEW] Nomura's Kiuchi thesis:** Japan is the source of the global long-end move, not a passive recipient - 10-year JGBs are up ~140bp YoY versus roughly half that for 10-year Treasuries, while German and UK 10-year yields are also at multi-year highs ^[5].
• **[NEW] US pressure channel:** the Trump administration has intervened unusually, pressuring the BoJ to hike and the Takaichi government to tighten fiscal expansion ^[5].

3. The Global Long-End Selloff

• **[ESCALATED] UK 10-year** at a 19-year high, **30-year** sold in syndication Tuesday at the highest yield since at least 1998 ^[1].
• **[NEW] Wednesday UK gilt auction:** £5B 2030 (4.625% coupon) sold at average yield 4.786% - the highest for the tenor since October 2023 - against £16.2B of bids ^[1].
• **[NEW] German 30-year** at 3.8981%, up 2bp, highest since April 2011 ^[3].
• **[NEW] French 10-year** at 4.3443%, up 1bp, highest since October 2008 ^[4].
• **[NEW] UN climate affairs chief:** "hellish" EU heat is worsening inflation pressure ^[12].
• **[NEW] Wealth Club's Susannah Streeter (single-source framing):** hot energy is the trigger, but a structural rotation is underway as major global investors move from US Treasuries into credit for return ^[1].
• **[NEW] SocGen's Kit Juckes (single-source framing):** the Trump team is sending a consistent weak-dollar signal - pressuring the Fed, direct FX intervention, suppressing Treasury yields - and the bigger question becomes how to stop the dollar weakening further or limit the associated capital outflows ^[13].
• **[NEW] Yen and FX:** cautious trade as the yen's powerful rally takes a breather ahead of US PPI and CPI; BoJ tightening bets and US pressure have been the recovery's fuel ^[14][15].

4. Asia Cross-Currents

• **[NEW] Korea-US deal:** Seoul is close to announcing a US energy investment package worth more than $100B to support US AI build-out, covering up to eight nuclear plants and one natural gas project; two agreements, possibly as soon as next week ^[16][17].
• **[NEW] Bank of Korea warning - derivatives:** called for stronger monitoring of overseas derivatives tied to Korean chipmakers, citing leveraged bets by hedge fund Situational Awareness as a driver of recent volatility ^[18].
• **[NEW] Bank of Korea warning - AI ETFs:** flagged a surge in leveraged ETF investment as generating significant domestic stock-market volatility ^[19].
• **[NEW] Japan tax reform:** cabinet to approve the outline of the tax reform on September 15 ^[20].
• **[NEW] Canada trade view (single-source):** Canadian economist Julian Karagheuzian said the Canada-US trade war stems from US "de-industrialization" structural problems; tariffs will not fix US deficits and will damage both supply chains ^[21].

5. What Decides Next

• **Lagarde's tone:** whether 2.5% is the terminal or a waystation to December; Goldman sees end-of-cycle, Deutsche and Scotiabank leave December live, ING and Danske lean dovish ^[8][6].
• **EIA STEO reset:** Brent spot seen at $91/bbl in 2026 and $74/bbl in 2027, with H2 2026 averaging ~$90/bbl - $8 above the August forecast - a clear hawkish tilt in the inputs the ECB will not yet have formally absorbed ^[2].
• **Falsifiable paths:** an oil giveback plus a dovish Lagarde would let the long-end retrace; sticky energy plus an open door to December would reprice front-end and long-end together, validating the JGB-led global move ^[2][6].
• **Source quality control:** the UK structural-rotation narrative (Wealth Club) ^[1], the Trump weak-dollar thesis (SocGen) ^[13], and the Japan-as-source argument (Nomura's Kiuchi) ^[5] are each single-source; the BoK's two warnings ^[18][19] are official but policy implications are unstated.