If you want to know where the AI hardware cycle is heading, watch the Philadelphia Semiconductor Index before you watch anything else.
The index, which has tracked the chip industry since 1993 and covers everything from designers and manufacturers to equipment makers, rose 2.9% to 11,460 in early Monday trading.
Nvidia, AMD, Micron and Intel all moved higher as investors bought back into semiconductor stocks following last week's bruising selloff, which saw the Nasdaq Composite fall 4.5%.
When the SOX leads a rally, as it did on Monday, the message is usually that the underlying hardware cycle is intact.
Fresh intelligence from Wedbush analyst Matt Bryson reinforces that reading. Bryson spent last week at the Open Compute Summit in California and found the AI data centre supply chain showing no sign of the credit stress that rattled markets.
Memory chip prices are heading higher, hard disk drive supply remains severely constrained, and cloud giants including Meta and Microsoft actually raised their component forecasts in September.
Bryson's favoured names coming out of the summit were Silicon Motion and Seagate, though Broadcom drew attention for a striking reason: the company is reportedly sold out of laser components until 2029.
The SOX's 52-week range runs from 6,160 to 14,655, meaning even after Monday's bounce the index sits roughly 22% below its peak.
That gap leaves considerable room for recovery if earnings this week from Tesla, Meta and Netflix deliver the guidance investors are looking for.