Before revision:  This is especially interesting as traditional momentum strategies have been underperforming in this period.abstract 
After revision:  This is especially interesting as traditional momentum strategies have been underperforming in this period.abstract one-third. Even more notably, this module is especially beneficial in periods of significant nonstationarity, and in particular, over the most recent years tested (2015-2020) the performance boost is approximately two-thirds. This is especially interesting as traditional momentum strategies have been underperforming in this period.