〔Overnight Brief〕Fed Hike Lands; STAR 50 +6.39% and 10Y UST Touches 5.01% as Dot Plot Leaves One More Hike Alive — Pre-Holiday Window vs. Q3 Earnings Becomes the Asymmetric Trade

0. Overnight Arc

The Fed's first hike since 2023 landed as a 'hawkish shoe on the ground' — 25bp to 3.75-4.00% on Sept 16, a 10Y UST at 5.01% (the highest since 2007) and a dot plot that still leaves one more move in the cards this year ^[1][2]. A-shares treated it as relief: STAR Composite +7.18% on the week, STAR 50 +6.39%, ChiNext +1.52%, Shenzhen Component +1.26%, Shanghai Composite +0.61%, Wind All A +1.70%, CSI 300 -0.06% ^[3][4][5]. The dominant voice is Huatai's 'rebound, not trend' call, with weak domestic credit, falling earnings breadth and pre-National Day caution as the caps ^[6]; Citic Construction Investment sees the macro shoe landing and a 'second round of repair' opening ^[7], China Merchants flags a possible turning node with TMT turnover back to 43% ^[8], and CITIC Securities points to Q3 reports as the trigger for a 'second offensive' leg ^[9].

1. Hike Aftermath: Rates, FX, Oil

• **[NEW] Historical context:** the 9.16 hike to 3.75-4.00% is the first since 2023; of 16 post-1955 tightening cycles, only 2004-2006 was a 'consecutive hike' run, with most averaging ~17 months, 7.4 hikes and 295bp cumulative ^[1].
• **[ONGOING] Long-end UST keeps climbing:** 10Y at 5.01% (+5bp on the week), 2Y at 4.76% (+13bp) — a bear-flattening shape that the 1999 analogue also produced ^[10][5][2].
• **[NEW] FX split:** DXY closed at 100.22 (+1.14% weekly) on the hawkish Fed, while offshore CNY appreciated 0.19% against USD; JPY and EUR weakened ^[10][2].
• **[ONGOING] China rates buffer:** 1Y CGB +0.06bp to 1.2298%, 10Y CGB -0.79bp to 1.6820% — domestic easing stance intact ^[2].
• **[NEW] Oil on Middle East de-escalation:** crude fell on the week as US-Iran diplomatic signals multiplied; gold and copper rebounded post-hike ^[10][2].

2. A-Share Sector Map

• **[NEW] AI chain leads the relief rally:** electronics +6.06% and communications +3.75% topped the 31 Shenwan first-tier industries; oil & petrochemicals -3.72% and agriculture -2.78% lagged ^[4].
• **[NEW] Crowding is reloading, slowly:** TMT's share of market turnover rebounded to 43% per China Merchants — not back to overheated, but the squeeze is unwinding ^[8].
• **[ONGOING] Themes in the feed:** OCS/WSS high-end liquid crystal materials for optical switching, SENKO supply chain, foldable-screen precision manufacturing, and humanoid-robotics 'third growth curve' candidates are the most-touched stock stories ^[11][12][13].
• **[NEW] Cyclicals: profit bottom being tested, not broken.** Huatai Securities: cement, float glass and photovoltaic glass still carry supply-demand overhangs, but overseas expansion and equity-investment income are cushioning leaders ^[14]. Citic Construction Investment: steel-price upside is capped until terminal demand recovers; structural winners sit in high-end manufacturing, energy transition and special steel ^[15].

3. Tactical Windows: Hong Kong, BSE, Calendar

• **[NEW] Hong Kong:** Huatai recommends keeping HK position flexibility — rate volatility has fallen but point risk isn't resolved and earnings expectations haven't repaired ^[16].
• **[NEW] Beijing Stock Exchange high-dividend play:** BSE cash dividends grew from 1.91 billion yuan (2021) to 5.581 billion yuan (2025), a near-2x jump; TTM yield averaged 1.37% as of Sept 18, 0.35pp over ChiNext and 0.55pp over STAR ^[17].
• **[NEW] Pre-National Day calendar effect:** 2010-2025 China All-Index data — T-10 to T-6 median return -0.94%, T-5 to T-1 -0.75%, both sub-45% win rates; T+1 to T+5 median +2.11% at a 75% win rate; 20-trading-day post-holiday cumulative +2.16%, 75% cumulative win rate ^[18].
• **[NEW] Earnings window:** CITIC Securities sees Q3 reports (mid-October) as the most likely trigger for a 'second offensive' leg; non-institution-heavy tech names (new processes, new themes) are favoured over crowded AI large-caps ^[9].
• **[NEW] 'Slow bull' frame:** Shenwan Hongyuan Research Institute head Wang Sheng told The Paper the long-direction 'slow bull' is intact, but the 'slow' matters — external noise, crowded micro-structure and time-to-digest are all real ^[19].

4. Contrarian and What Would Falsify

• **[NEW] Oaktree Capital founder Howard Marks told Bloomberg TV the Fed should 'communicate less, do more' — bulls still control the tape ^[20].
• **[NEW] The falsifiable tests:** (i) Sept-Oct macro data (credit, property, retail) must not deteriorate further — Huatai calls weak credit and earnings breadth a cap on upside ^[6]; (ii) oil and the 10Y UST must stay off their highs — Citic Construction Investment flags oil, long-end UST and the Oct 28-29 FOMC as the next external trip-wires ^[7]; (iii) the 75% post-holiday win rate is a median, not a guarantee, and stretched AI-large-cap positioning limits upside if Q3 earnings disappoint ^[9][18].
• **[NEW] Source quality control:** Fed rate, A-share index and UST data are Wind-sourced via broker notes and well-crossed ^[3][4][5][2]; the post-holiday calendar stat is single-broker (Citic Construction Investment), thin ^[18]; the BSE dividend figures are confined to one Open Source Securities note and the 2025 figure has no external audit in the source ^[17].
• **[ONGOING] Contradiction in the room:** Huatai calls it 'rebound, not trend' ^[6], while Citic Construction Investment labels the same tape a 'second round of repair' ^[7] and CITIC Securities sees a path to a 'second offensive even new high' ^[9]. The settlement test is the same — Q3 earnings — but the asymmetric framing (defensive vs. offensive) couldn't be more different, so size the position to the calendar, not the call.