“…The specifications in the literature range from regression discontinuity to instrumental variable estimation. According to Appel et al (2020), papers that use unbiased estimators find that Russell index assignments have little to no impact on total institutional ownership (e.g., Appel et al, 2016, Wei & Young, 2019 and only increase ownership by index funds (e.g., Appel et al, 2016Appel et al, , 2020Ben-David, Franzoni, & Moussawi, 2019;Cao, Gustafson, & Velthuis, 2019;Glossner, 2019). Consistently, in untabulated results, using Russell 1000/2000 assignment shows no significant changes in institutional ownership and in blockholdings.…”