1. AI semis: the tape is now testing “capex sustainability”, not near-term demand.
The key overnight move was a broad chip sell-off: Reuters reported the Philadelphia Semiconductor Index down 7.9% on 23 June, with Micron and SanDisk down c.13%, Marvell down 9.4%, Qualcomm down 8% and Nvidia down 4.1%. The investor debate is shifting from “is AI demand real?” to “is AI infrastructure being funded too aggressively, with too much debt and too much crowding in the same winners?” For Nvidia, AMD, Broadcom, Marvell, Micron, SK Hynix and Samsung, the second-order issue is not orders today, but whether 2027 pricing, utilisation and hyperscaler cash flows can support current expectations.
2. The AI buildout is broadening beyond GPUs into storage, but the market is getting more selective.
Backblaze rallied sharply after a $335m, five-year CoreWeave storage agreement, meaningful versus its 2025 cloud storage revenue of $79.9m. The read-across is that AI infrastructure is becoming a full-stack capex cycle: compute, networking, power, cooling, storage and data movement. The bull case is that smaller infrastructure enablers can become AI beneficiaries; the bear case is that these are still low-margin, capex-heavy workloads unless vendors own durable software control points. Exposed names: Backblaze, CoreWeave, Dell, Super Micro, Seagate, Western Digital, NetApp and Pure Storage.
3. Europe AI infrastructure remains a live demand signal despite the sell-off.
Barron’s reported that Super Micro-backed Argentum AI secured $7.8bn of AI infrastructure deals involving 47,000 Nvidia GB300 chips at a 300MW data centre in Poland. This supports the bull case that sovereign/regional AI capacity is becoming a new demand leg beyond US hyperscalers. The debate is whether neoclouds can earn acceptable returns once GPU leasing prices normalise. Nvidia is the clearest beneficiary; Super Micro gets server exposure, but with more margin/working-capital risk.
4. Qualcomm is trying to re-rate from handset cyclicality into custom AI silicon.
Reuters reported Qualcomm is in talks to provide custom chip-design services to ByteDance, while Barron’s noted investor focus on its data-centre ambitions and potential AI platform expansion. The buy-side debate is whether Qualcomm can become a credible alternative in the Broadcom/Marvell custom ASIC lane, or whether this is another diversification story that struggles to overcome smartphone cyclicality. If successful, the implications are meaningful for Qualcomm’s TAM, but also incrementally competitive for Broadcom, Marvell and Arm ecosystem players.
5. Software/SaaS remains in “prove AI is accretive” mode.
Reuters earlier this month framed the software rebound as investors moving from “AI kills SaaS” to “AI may be an ally”, with the software ETF up nearly 42% from its April low but still needing evidence that AI drives revenue, retention or margin rather than seat cannibalisation. For cybersecurity, the strongest narrative remains platformisation, AI-governance, identity and runtime protection; for horizontal SaaS, the bar is higher because investors want proof of monetisation. Most exposed: PANW, CRWD, ZS, DDOG, SNOW, MDB, NET, PLTR, ADBE, CRM and NOW.
