Osman Ali

Will AI Make Markets Less Efficient?

Osman Ali, Alison Nathan, George Lee

Goldman Sachs' Global Co-Head of Quantitative Investment Strategies, Osman Ali, discusses how his team leverages AI and machine learning to analyze market sentiment across 15,000 stocks daily, capturing the fact that over half of recent equity returns are now driven by themes rather than fundamentals. Ali explains that while advanced language models enhance market efficiency, their widespread adoption creates new alpha opportunities through crowding effects and predictable herd behavior, which the firm actively models to exploit. This strategy relies on a hybrid approach combining proprietary data, custom technology, and human experience to navigate a zero-sum game where increasing market complexity continuously generates fresh sources of value.