“…For example, Shiller (1989) and Pindyck and Rotemberg (1993) find evidence that comovement cannot be explained by simple fundamentals such as dividends, size, or other firm characteristics. More recently, researchers have uncovered comovement based on factors such as index affiliation (Barberis, Shleifer, and Wurgler, 2005;Greenwood, 2008), value/growth labels (Boyer, 2011), nominal share prices (Green and Hwang, 2009), geographical proximity (Pirinsky and Wang, 2004;Ji, 2007;Chan, Hameed, and Lau, 2003) trading location (Froot and Dabora, 1999;Kaul, Mehrotra, and Stefanescu, 2006), and analyst coverage (Anton and Polk forthcoming;Hameed, Morck, Shen and Yeung, 2010;Muslu, Rebello, and Xu, 2009). Furthermore, excess comovement is related to correlated trading by both institutions (Pirinsky and Wang, 2006;Sun, 2007) and individual investors (Kumar and Lee, 2006).…”