Business

Retail Investors Impact Market Efficiency

Updated 2026-06-25 17:10 UTC 1 source Neutral

The rise of retail investors is making the stock market less efficient, according to a Goldman Sachs quant. AI is exacerbating this trend by further complicating market dynamics.

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MarketWatch

Amateur investors are changing how the stock market works. That’s creating opportunities for those who know where to look.

The rise of the retail investor is making the market less efficient — and AI is compounding the problem, according to a quant at Goldman Sachs.

2026-06-25 16:59 UTC