“…That adding a trading venue deepens the aggregate book is corroborated by empirical evidence (e.g.,Boehmer and Boehmer (2003),Fink, Fink, and Weston (2006),Foucault and Menkveld (2008),He, Jarnecic, and Liu (2015),Aitken, Chen, and Foley (2017)). On the theoretical side,Dennert (1993) also features this force.…”