Brown Technical Insights

Brown Technical Insights

The Weekender - October 17, 2026

Revenge of the average stock

Scott Brown, CMT's avatar
Scott Brown, CMT
Oct 17, 2026
∙ Paid

Last week: Performance

Seven of eleven sectors were higher last week, but it didn’t matter for the major indexes as the worst weekly loss for technology since April 2025 dragged the S&P 500 to a 1.95% loss. EM was even worse, as the tech/chip collapse started in South Korea and extended into Taiwan.


Last week: The most important moves

First 1% down day for the S&P 500 since July

That was Wednesday. It followed it up with another on Friday.

Banks take a punch on earnings, then bounce back

Healthcare soars to new highs

But nobody cared about any of that because… AI

Korea’s collapse kicks off again

Worst week for the KOSPI since 2008. I called out the risk to SK Hynix in the October 8 Stock Trends, and it has been straight down since.

That bled into broader memory and US chips

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