〔Overnight Brief〕AI Short-Drama Runway Doubles to $5B (IAP +129%) as AI Rewires Pharma R&D, While A-Shares Close the Week with ChiNext -8.90% and Only 2 of 31 Sectors Green — Defensive Bid vs Growth Capitulation

0. Weekly Arc

The research board leans defensive. Sinolink frames overseas AI short-drama as a new content-export engine with low penetration and a $5B-plus 2026 runway ^[1], China Securities argues AI is rewiring pharma R&D end-to-end ^[2], and the onshore strategy weekly prescribes "defense first, counter-attack on opportunity" as ChiNext sheds 8.90% on the week ^[3]. Cross-border, Sheng Songcheng flags Fed-path uncertainty ^[4] while UBS expects November UST issuance unchanged ^[5]. Net: a defensive tilt against an AI-led growth re-rating story.

1. AI Short-Drama Export: Penetration Lows, IAP Engine

• **[NEW] Sinolink Securities** on overseas micro short-drama ^[1]:
• Core model is IAP (in-app purchase) — first episodes free, later episodes paid; advertising is supplementary ^[1].
• 2025 overseas micro short-drama market size approximately $4 billion; in-app purchase revenue across both app endpoints $2.279 billion, +129% YoY ^[1].
• 2026 overseas total market size expected to exceed $5 billion; H1 2026 app downloads 1.441 billion, +79% YoY ^[1].
• Domestic teams hold systematized advantages — full IP library, industrialized AI production capacity, mature monetization model — hard for overseas competitors to replicate ^[1].
• Forward: as AI image quality, character expression, and plot coherence improve, iteration from low-end manga-drama toward high-quality photorealistic AI short-drama should lift watch time, ad ARPU, and paid conversion ^[1].

2. AI in Pharma: End-to-End Penetration, Breaking Eroom

• **[NEW] China Securities** on AI reshaping traditional pharma R&D ^[2]:
• Drug action is fundamentally molecule-target interaction; traditional R&D is constrained by Eroom's Law ^[2].
• AI has penetrated target identification, virtual screening, de novo design, ADMET prediction, and automated synthesis — lifting throughput past the high-throughput physical blind-screening limit and materially improving efficiency and success rate ^[2].

3. A-Share Weekly Tape: Defensive Bid Holds, Growth Capitulates

• **[NEW] Strategy Weekly (Sina Finance aggregator)** ^[3]:
• Broad declines: Shanghai Composite -2.56%, Dongcai All-A -3.81%, CSI 300 -3.40%, ChiNext -8.90%, STAR 50 -6.77%, CSI 500 -6.60%, CSI 1000 -6.62%, CSI 2000 -6.40%, Shanghai 50 -1.39% — large-cap relatively more resilient ^[3].
• Only 2 of 31 Shenwan industries posted positive returns: food & beverage and banks led; communications, electronics, and power equipment led losses ^[3].
• Profit-estimate revisions most negative in electronics, coal, computer, communications, and non-ferrous metals; sector tracking shows coal, steel, and building materials weakening, oil up, chemicals broadly weak, memory chip prices slightly higher ^[3].
• Sector call: "defense first, counter-attack on opportunity"; focus on banks, utilities, coal, oil & petrochemical dividend plays, plus under-owned food & beverage; cautious on tech, taking only oversold weak bounces ^[3].

4. Cross-Border Currents: Fed Path Uncertain, UST Supply Steady

• **[NEW] Sheng Songcheng (via Caixin):** Fed interest-rate path still carries uncertainty ^[4]. Single-source headline — no direction, dot-plot, or pricing detail.
• **[NEW] UBS (via Jin10 flash):** expects November US Treasury issuance size unchanged, with possible structural adjustment next year ^[5]. Single-source flash — no coupon mix, tenoring, or auction-date detail.

5. Contrarian and Tail Risks

• Sinolink's "low penetration" thesis on AI short-drama export hinges on 2026 downloads holding the +79% YoY pace while IAP monetisation holds — the $4B / $2.279B prints are a single-source DataEye read, not a two-firm verification ^[1].
• The A-share weekly's defensive prescription is a tape trade, not a structural view: the same report prints ChiNext -8.90% and CSI 1000 -6.62%, so the falsifier is a growth rebound led by electronics and communications ^[3].
• Cross-border is the thinnest section: Sheng Songcheng and UBS items are headline-only with no spread, tenoring, or pricing detail — treat as direction, not a ^[4][5].