We study the role played by the informal links, or “connections,” between the chief executive officer (CEO) and the divisional managers of conglomerate organizations. Using data on a large sample of multisegment U.S. corporations from 1996 to 2004, we show that segments run by connected...

We use a two-year panel of individual accounts in an S&P 500 index mutual fund to examine the trading and investment behavior of more than 91,000 investors who have chosen a low-cost, passively managed vehicle for savings. We identify classes of momentum investors and contrarian investors. We...