Evaluation of the Lateral Performance EG5736_052908 Of Let-In Bracing and Mixed Bracing Systems NAHB Research Center 3 May 2008 holddowns and stud strapping. Configurations 13 and 14 were used to evaluate the performance of perforated interior gypsum shear walls with let-in bracing. Configurations 15-18
Fourth market. Refers to the practice of institutional investors trading large blocks of securities directly to avoid brokerage commissions. See: Instinet. Fourth Market. The over-the-counter market for the sale of listed securities between institutional investors. For example, if a mutual fund sells stock in Google to a hedge fund without going through an exchange, the transaction is said to occur on the fourth market.
The four-firm concentration ratio and the HHI both require information on the shares of the market that the firms control, so it is important to know what goods are included in the market. Market definition is a description of the goods and/or services that are included in the market.