Broadcom sneezed and COPJ investors lost 11% in a day and learned that copper’s AI story has a pause button

MSN
2026.06.08 11:31
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The Sprott Junior Copper Miners ETF (COPJ) dropped 11% on June 5, 2026, following Broadcom's weak AI semiconductor revenue guidance and a strong May payrolls report. The sell-off highlights risks to copper demand from potential pauses in AI data center buildouts and higher Treasury yields impacting capital-intensive junior miners.