US Retail Investors Accelerate Stock Buying in AI and Semiconductors

Semiconductors accounted for $2.6 billion of net purchases, the third-largest weekly total for the group over the past year. Citadel Securities said October was running at three times the one-year average pace for semiconductor buying on its platform.

Retail investors also net bought $2.4 billion of AI-infrastructure stocks, the fourth-largest weekly total over the past year. Neoclouds drew $700 million, the largest weekly accumulation Citadel Securities had recorded for that group.

The figures describe activity handled on Citadel Securities’ platform, not all retail trading in the US market. They also show where purchases were concentrated, but not whether those positions will be profitable.