The effect of changes in ownership structure on performance: Evidence from the thrift industry1We thank George Aragon, Ben Branch, Benjamin Esty (the referee), Mark Flannery, Alvin Harrell, Clifford G. Holderness, Edith Hotchkiss, Michael Jensen, Edward J. Kane, Donald May, Marcia Millon Cornett, Manju Puri, G. William Schwert (the editor), Henri Servaes, Robert Taggert, Hassan Tehranian, Thomas Vartanian, William Wilhelm, Julie Williams, and seminar participants at Boston University, the Federal Trade Commission in Washington, DC, Suffolk University, University of Massachusetts at Amherst, and Columbia University for helpful discussion of this study. Earlier versions of this paper were presented at the 1995 Annual Meetings of both the Western Finance Association and the Financial Management Association, and at the 1996 Annual Meeting of the American Finance Association.1
Restrictions on stock ownership may harm a company's performance, because restrictions prevent owners from choosing an optimal structure. We examine the stock-price performance and ownership structure of a sample of thrift institutions that converted from mutual to stock ownership. We find that after conversion and the expiration of ownership-structure restrictions, firm performance improves significantly, and the portions of the firm owned by managers and the firm's employee stock ownership plan increase. Changes in performance are positively associated with changes in ownership by managers, but negatively associated with changes in ownership by employee stock ownership plans.