Market infrastructure
A data-center cooling failure halted CME futures trading before the exchange restored service, creating a concrete cross-asset infrastructure disruption.
Nov 28, 2025 · QQQ/SPY Market Review · 14 headlines
Friday closes higher, with QQQ ahead of SPY as CME and tech developments shape the day
QQQ rose 0.79% and SPY added 0.57%, leaving QQQ ahead by 0.22 percentage points. CME's outage and restart, a 30% quarterly rise in global DRAM sales, AI and cloud-regulation developments, and Black Friday online spending provided the main context.
Published
- QQQ
- +0.79%
- SPY
- +0.57%
- QQQ − SPY
- +0.22%
What shaped the session
Memory demand
Omdia reported that global DRAM sales rose 30% quarter on quarter in Q3, with SK Hynix retaining first place ahead of Samsung and Micron.
Tech competition and regulation
Alibaba launched priced AI glasses in China, while Alphabet withdrew its EU antitrust complaint against Microsoft's cloud business.
Holiday spending
Adobe Analytics reported a 9.4% increase in U.S. Black Friday online sales to $8.6 billion, providing a high-frequency consumer-demand reading.
Key news
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