This paper tests the Berle and Means thesis that the dissemination of
corporate ownership has allowed corporate managers to pursue goals oth
er than profit maximization. Using piece-wise linear regression analys
is with a sample of large U.S. corporations in the 1930s, a nonlinear
relation is estimated between the degree of dominant stockholder contr
ol and corporate performance. The empirical results lend some support
for the Berle and Means view of the ''modern'' corporation. In particu
lar, a small degree of stockholder control is found to be associated w
ith a low level of corporate performance, ceteris paribus.