Institutional Common Ownership and Firm Value : Evidence from Real Estate Investment Trusts

This paper contributes to the ongoing debate about whether and how institutional common ownership (ICO) affects firm behavior. Using a sample of equity REITs, which provide significant advantages for isolating a monitoring channel, we find a robust and positive relation between ICO and REIT firm value. The positive relation between ICO and firm value is driven mainly by motivated investors and becomes stronger when we construct our ICO measures using blockholdings. Our difference-in-differences (DID) analysis, using mergers between institutional investors, suggests a causal relation exists between ICO and firm value. After investigating various channels through which ICO could affect firm behavior, we conclude that asset allocation decisions and performance are the most plausible explanations. Our finding that the monitoring associated with ICO aids managers in their portfolio disposition strategies further supports this conclusion. This enhanced monitoring leads to increased property portfolio returns as well as more geographic diversification