Because of the sheer number of types of industries represented onthe stock exchange, however, many critics believe that an index of 30 stocks cannot possibly depict the state of the American markets accurately. In addition to industry representation issues, the stocks on the Industrial Average receive criticism for being exclusively blue chip stocks.
, Applied Economics, 31, 509- 516. Tövist, L.
Today the term is used to describe an electronic ribbon that carries information on stock trades currently occurring in the market. Today's ticker tape usage is a far cry from the machine's heyday, when between a quarter and a third of a mile of tape ran through the ticker on a daily basis, with the machine providing an endless stream of audible ticks as it reported on the activity in the United States stock markets.