“…Second, we use dynamic panel estimation, which accounts for unobserved heterogeneity, simultaneity, and the dynamic relation between the CEI and past innovation (Wintoki, Linck, & Netter, 2012;Abdallah, Goergen, & O'Sullivan, 2015;Atif, Huang, & Liu, 2019). The twostep 'system GMM' (Arellano & Bover, 1995;Blundell & Bond, 1998) uses first-differenced variables as instruments for the equations in levels.…”