Periodic antitrust attacks on corporations may have influenced stock prices. For the period 1904 to 1944, each antitrust case filed is associated with a 0.5 to 1.9 percent drop of the Dow and each unexpected case with even larger drops. Other aspects of antitrust besides actual filings may help...

A firm can make investments in tangible and intangible capital by buying components in the market and assembling them itself, or it can buy assembled components, by purchasing another firm or a portion of its assets. This approach is consistent with the theory of the firm, especially the...