“…No systematic relationship Holderness andSheehan (1985, 1989) Eckbo and Smith (1998) Lewellen et al (1985) Positive effect Agrawal and Mandelker (1990) Renneborg (2000) Barclay and Holderness (1991, 1992) Bethel et al (1998 Negative effect Song and Walking (1993) Slovin and Sushka (1993) These studies use different ownership measures (blockholder ownership, officer and director ownership, insider ownership, share of largest owner, share of two largest owners, closely held shares, and the Herfindahl Index of Ownership Concentration). equation models can help overcome this problem, but lack of reliable instrument variables that influence either ownership or performance without influencing the other is a serious obstacle to uncovering the causal relationship between them in cross-sectional data (Himmelberg et al, 1999).…”