Technology has dramatically reduced the cost of disclosing information to investors and created new conduits for securities' sales. The result is stock ownership, both direct and indirect, has never been more widely distributed. Equally important, changes have occurred in the institutional market for new offerings. Bought deals, Internet road shows, the preeminence of mutual funds and pension funds, and foreign investors and issuers have changed the market. In the wake of these changes, the SEC's disclosure policy has evolved. The evidence suggests we have moved from a world where information was released relatively infrequently and with significant lags to a world where information is released relatively rapidly on a continuous basis to as many investors as possible.

This paper investigates the causes and consequences of activist block share purchases in the 1980s. We find that activist investors were most likely to purchase large blocks of shares in highly diversified firms with poor profitability. Activists were not less likely to purchase blocks in firms with shark repellents and employee stock ownership plans. Activist block purchases were followed by increases in asset divestitures, decreases in mergers and acquisitions, and abnormal share price appreciation. Industry-adjusted operating profitability also rose. This evidence supports the view that the market for partial corporate control plays an important role in limiting agency costs in U.S. corporations.

This paper investigates the causes and consequences of activist block share purchases in the 1980s. We find that activist investors were most likely to purchase large blocks of shares in highly diversified firms with poor profitability. Activists were not less likely to purchase blocks in firms with shark repellents and employee stock ownership plans. Activist block purchases were followed by increases in asset divestitures, decreases in mergers and acquisitions, and abnormal share price appreciation. Industry‐adjusted operating profitability also rose. This evidence supports the view that the market for partial corporate control plays an important role in limiting agency costs in U.S. corporations.

This paper explores the market for voting rights and shareholder voting around 350 mergers and acquisitions between 1999 and 2005 by examining institutional-investor trading and voting outcomes. Our results show institutions in aggregate buy shares and hence voting rights before merger record dates. This trading is not related to proxies for merger arbitrage or trading around merger announcements, and thus is not simply a continuation of the latter. Trading and buying before record dates are positively related to voting turnout and negatively related to shareholder support of merger proposals. We explore several possible interpretations of these results.