“…" David McLean informed us that they also surveyed asset pricing experts to make sure they were not missing anything. 3 For other trading cost studies, see Stoll and Whaley (1983), Schultz (1983), Ball, Kothari, and Shanken (1995), Knez and Ready (1996), Pontiff and Schill (2001), Korajczyk and Sadka (2004), Lesmond, Schill, andZhou (2004), andHanna andReady (2005), McLean (2010), Hou, Kim, and Werner (2016), Patton andWeller (2017), Frazzini, Israel, andMoskowitz (2015), and Briere et al (2019). For other papers on the decay of predictability over time, see Schwert (2003), Marquering, Nisser, and Valla 2006, Huang and Huang 2013, Chordia, Subrahmanyam, and Tong (2014, Jacobs and Müller (2017), Chu, Hirshleifer, and Ma (2017), and Chen and Zimmermann (2019).…”