Thematic

This Week in AI (Sep 20-26): Opus 5.5 and GPT-6 launch cheaper; data center IPO delays

26 Sep 2026 By Ke Yan, CFA
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Abstract: Anthropic, OpenAI, xAI, Xiaomi and Stepfun all shipped model updates, with price cuts and open weights at the center of the week. AI infrastructure financing stayed active across Akamai, Nscale, Firmus, Oracle-linked data centers, CoreWeave facilities and SoftBank debt. Regulatory and security news focused on Pentagon supply-chain controls, OpenAI evaluation incidents and US review before UK model testing.

SK Hynix (000660 KS) Samsung Electronics (005930 KS) MINIMAX (100 HK) XIAOMI (1810 HK) KNOWLEDGE ATLAS (2513 HK) CXMT (688825 CH) TENCENT (700 HK) SoftBank (9984 JP) ALIBABA (9988 HK) ACCV US (ACCV US) Akamai Technologies (AKAM US) Blackrock (BLK US) CoreWeave, Inc. Class A Common Stock (CRWV US) Alphabet Inc. Class A Common Stock (GOOGL US) KKR (KKR US) Microsoft (MSFT US) Nvidia (NVDA US) Oracle (ORCL US) Blue Owl Capital (OWL US) Super Micro Computer, Inc. Common Stock (SMCI US) T Rowe Price (TROW US)

Highlighted Stocks

SK Hynix, Samsung Electronics, MINIMAX, XIAOMI, KNOWLEDGE ATLAS, CXMT, TENCENT, SoftBank, ALIBABA, ACCV US, Akamai Technologies, Blackrock, CoreWeave, Inc. Class A Common Stock, Alphabet Inc. Class A Common Stock, KKR, Microsoft, Nvidia, Oracle, Blue Owl Capital, Super Micro Computer, Inc. Common Stock, T Rowe Price

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