〔Overnight Brief〕Warsh Caps 10Y at 4.73% as Curve Flattens; July CPI at 0.5%, PBOC Drains RMB 100bn - Long-End Supply Test vs AI Capex Verification

0. Overnight Arc

Warsh's Jackson Hole hawkish hold, paired with the PBOC's first MLF net withdrawal in four months, set the tone. The 10Y U.S. Treasury closed at 4.73% on Aug 29, with 2Y/5Y/10Y up 15bp/11bp/2bp over two weeks in a flattening move ^[1], while Treasury Secretary Bessent's pledge of nearly $1 trillion in TGA buybacks tried to cap the long end ^[2]. China-side liquidity tightened at the margin even as July CPI stayed cool ^[2][3][4][5]. AI capex, by contrast, was re-verified by Nvidia's FY2027Q2 print, with the four North American hyperscalers still accelerating capex ^[6][7]. Net: a long-end supply test against a front-end patience trade, with U.S. Treasury rate risk the largest external overhang for A-shares ^[6] and AI demand the cross-asset offset ^[6][1].

1. Policy Narrative

• **[ESCALATED] Hawkish — Fed Chair Warsh (Jackson Hole):** signaled that rates will rise if inflation does not fall quickly; reaffirmed a "firm and fixed" 2% target; judged current financial conditions not restrictive; advocated reduced forward guidance ^[6][2][4].
• **[ONGOING] Hawkish — Fed's Collins:** said she would consider a hike if inflation does not durably improve ^[2].
• **[ONGOING] Dovish-tilt — Fed's Schmid:** said current short-end rates may sit in the "easing zone" ^[2].
• **[ONGOING] Hawkish — Fed's Hammack:** said current rate levels are insufficient to bring inflation down on their own ^[2].
• **[NEW] Treasury Secretary Bessent:** announced use of nearly $1 trillion in Treasury General Account funds to repurchase long-dated Treasuries, aimed at capping long-end yields ^[2].
• **[NEW] Bank of Korea:** raised base rate 25bp to 3.0% ^[2].
• **[ONGOING] PBOC:** Q2 Monetary Policy Implementation Report reaffirmed a "moderately loose" stance; July Politburo called for more proactive fiscal and continued monetary easing in H2, with RMB 7 trillion in "six networks" investment, deeper "AI Plus" rollout, and property-market stabilization ^[3][5].
• Source-quality note: three of the four Fed voices above (Collins, Schmid, Hammack) appear only in a single Huatai weekly ^[2]; cross-check against FOMC minutes before trading the split.

2. Key Data and Market Read

• **[NEW] U.S. curve flattening:** 10Y at 4.73% as of Aug 29; 2Y +15bp, 5Y +11bp, 10Y +2bp vs two weeks ago; YoY net Treasury issuance softer across 2Y-30Y (-0.37% / -0.77% / -0.12% / -0.02% / -0.09% / -0.20% / -0.22%) ^[1].
• **[NEW] U.S. July fiscal deficit:** $432.3bn (+48% YoY); FY2026 first 10 months cumulative deficit $1.80 trillion, already above the FY2025 full-year borrowing ^[1].
• **[NEW] U.S. Treasury futures:** CFTC non-commercial net short -187,200 contracts, -7,600 over two weeks — the prior rate-surge bearish extreme is being digested, with shorting momentum not accelerating ^[1].
• **[NEW] China MLF:** Aug 25 operation of RMB 500bn with net RMB 100bn withdrawal — first scaled-back rollover in four months ^[2][4].
• **[NEW] China July CPI:** +0.5% YoY, -0.1% MoM; core CPI +0.9% YoY, +0.3% MoM; H1 CPI +1.0% YoY (core +1.2%); June PPI +4.1% YoY — highest since Aug 2022, ending 41 consecutive months of negative YoY PPI ^[3][5].
• **[ONGOING] China fiscal:** Jan-July fiscal revenue RMB 14.37 trillion, +5.8% YoY; Jan-July industrial profits +17.6%; July fiscal revenue +11.7%, expenditure +0.5% ^[2][3].
• **[ONGOING] China real estate easing:** central-government public housing provident fund max first-home loan raised to RMB 3.4 million; mortgage term extended from max 30 to max 40 years; spot-home sales and "deliver house and certificate together" rollout; listed developer refinancing and M&A support ^[2][4].
• **[ONGOING] China H1 GDP:** +4.7% YoY (Q1 +5.0%, Q2 +4.3%); H1 incremental GDP at a five-year high for the period ^[3].

3. AI Capex Verification

• **[ONGOING] Nvidia FY2027Q2 (calendar Q2 2026):** revenue $96bn, +100% YoY; data center $89bn (+18% QoQ); hyperscale $49bn (+13% QoQ); ACIE $40bn (+25% QoQ, +138% YoY) ^[6][7]. Q3 guidance $108bn ±2%; initial FY2028 revenue growth ~+70% YoY ^[7]. Read: demand inflection not in sight, but the market lens is shifting to revenue-growth slope, gross-margin trajectory, and capex quality ^[6].
• **[NEW] Tencent:** open-sourced Hunyuan Hy4 preview (770B total parameters, 1M-token context) ^[7].
• **[NEW] Zhipu:** released GLM-5.3 Flash with native multimodal and coding enhancements, low API pricing on domestic compute ^[7].
• **[NEW] Google:** Gemini Omni 1.1 Flash advanced to 4K video generation ^[7].
• **[NEW] Nvidia–Hugging Face:** Nvidia plans to acquire Hugging Face, extending compute-vendor reach into open-source model platforms ^[7].

4. Hong Kong Flows and BSE Print

• **[NEW] Hong Kong flows (week of Aug 19-25):** stable foreign +14.0bn HKD, flexible foreign +27.0bn HKD, Stock Connect -23.1bn HKD; long-term foreign has returned nearly 100bn HKD since late June ^[8]. Most active Northbound names: Zhongji Innolight (RMB 27.5bn two-way turnover, 11% of stock), CATL (RMB 16.2bn, 19%), Eoptolink (RMB 15.9bn, 10%) ^[8].
• **[NEW] BSE 50 index:** -1.08% w/w to 1063.80; average daily turnover ratio 3.60%, -0.73pct w/w; BSE A-share weekly total turnover RMB 84.77bn, -46.26% w/w ^[9].
• **[NEW] BSE H1 2026 results:** 282 of 339 firms profitable (83.19% coverage); revenue RMB 138.57bn (+15.11% YoY), net profit RMB 11.78bn (+17.58%); 70.80% posted revenue growth, 47.49% posted net-profit growth; 25 firms with net profit above RMB 100mn, 15 firms turned profitable YoY ^[10]. Contract liabilities +34.53% YoY to RMB 13.80bn — H2 revenue confirmation signal ^[10].
• **[NEW] BSE sector YoY revenue growth:** high-end equipment +13.97%, IT +19.00%, new materials +23.34%, consumer services +5.64%, pharma +5.26% ^[10]. Only IT, new materials, and consumer services posted positive net-profit growth in the H1 ^[10].
• **[NEW] BSE pipeline:** Zhuomu Technology (edge AI) accepted; cohort of 102 H1 acceptances posted 2025 median revenue RMB 598mn, median net profit RMB 77.7mn, net margin 12.5%, revenue growth 14.3%, R&D intensity 4.1% ^[11].
• **[NEW] Industrial base:** Jan-July integrated circuit exports RMB 1.49 trillion, +91.6% YoY; NDRC spokesperson Li Chao flagged full-chain breakthroughs in core IC technologies at the Aug 28 briefing ^[9].

5. Style, Sourcing, and What Would Falsify

• A-share strategy tilt: market is shifting from broad beta to performance-verified structural plays ^[6]; rebalancing into "AI compute, non-ferrous, innovative drugs, banks, non-bank finance, oil, coal, steel, agriculture" ^[12]; barbell of large-cap value and small-cap growth amid fast sector rotation ^[12][13]. Monthly rotation report flags a "K-shaped" style: financials > cyclicals > stable > consumer > growth ^[13].
• **[NEW] Australia (single source / unverified):** top forecasters warn the Australian dollar's two-month rally may be peaking as RBA hike bets have overshot ^[14].
• Source quality control: the Warsh-as-"strategic expectation management" framing is a single Chinese-strategist interpretation ^[6]; the dovish-tilt Schmid voice is single-source from a Huatai weekly and should be cross-checked against FOMC minutes ^[2]; BSE flow and turnover data are internally consistent but single-source ^[8][9].
• Falsifiable test: the September CPI pair. A hot print would force curve re-steepening and pressure the 10Y above 4.73%, validating the supply-driven bear steepener ^[6][1]; a soft print would vindicate Warsh's tone as pre-midterm signaling and let the front end re-lead. BSE contract-liability growth (+34.53% YoY) is the H2 revenue confirmation signal to monitor ^[10].