Antti Ilmanen - Unexpected Returns (S5E8)

Quantitative investment strategies face a challenging landscape defined by low expected returns and shifting market dynamics. Antti Ilmanen, co-head of Portfolio Solutions at AQR, argues that while style premia like value and momentum have experienced periods of underperformance, they remain essential components of a diversified portfolio. Patience and conviction are critical, as these strategies often require long-term commitment to capture risk premia. Ilmanen distinguishes between the high costs of tail-risk hedging via put options and the more sustainable, albeit imperfect, protection offered by trend-following strategies. Furthermore, the conversation explores the impact of passive indexing on market efficiency and the necessity of accounting for human capital when constructing a holistic investment strategy. Ultimately, success in quantitative investing demands a disciplined, evidence-based approach that balances historical data with an understanding of evolving market structures.