Will US stocks keep outperforming foreign markets?
Core argument: A 2011 study by Clifford Asness, Roni Israelov and John Liew suggests 39% of 15-year equity returns can be explained by domestic economic performance, consistent with the finding that domestic growth dominates local equity returns over multi-year periods.
American equity exceptionalism is possible, for at least two reasons. First, the US is set to capture a sizeable share of productivity benefits from technology such as artificial intelligence. Second, a moderating global economy could work against more cyclically biased equity markets overseas, favouring those geared towards organic growth drivers. Over multi-year periods, domestic growth has been found to dominate local equity returns. A 2011 study by Clifford Asness, Roni Israelov and John Liew suggests that 39% of 15-year returns could be explained by domestic economic performance. Growth is fundamentally a function of labour and productivity. Given that most of the developed world (and China) faces at least directionally similar labour constraints, the US seems likely to be a relative growth winner thanks to prospects for greater productivity gains.

