Harvard: ChatGPT has a "foreign bias" on stock picks

A Harvard Business School study by Charles C.Y. Wang pitted ChatGPT against DeepSeek on stock analysis, giving both models roughly 5,000 publicly traded Chinese companies to evaluate. ChatGPT projected stock prices 12.5% higher and issued "buy" recommendations more often — but its forecast errors were 13% larger than DeepSeek's, according to Harvard Business Review. — Read the rest

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