NEW:  DealLawyers.com discusses a recent study finding that common institutional ownership reduces competing bids target companies receive in mergers and acquisitions in Does Common Institutional Ownership Deter Competing Bids?

Common Ownership and Competition in Mergers and Acquisitions examines the effects of common ownership between potential acquirers on competition in mergers and acquisitions, finding cross-ownership lowers the likelihood of a competing bid by 45 percent.

Professor Ann Lipton discusses effects of common ownership by large institutional stockholders voting on corporate transactions in Common Ownership Problems.