To work effectively, markets require the free flow of information. Without it, investors cannot keep abreast of developments or gauge, to the best of their ability, the true value of stocks. Numerous sources of information enable investors to follow the fortunes of the market daily, hourly, or even minute-by-minute. Companies are required by law to issue quarterly earnings reports, more elaborate annual reports, and proxy statments to tell stockholders how they are doing. In addition, investors can read the market pages of daily newspapers to find out the price at which particular stocks were traded during the previous trading session. They can review a variety of indexes that measure the overall pace of market activity; the most notable of these is the Dow Jones Industrial Average (DJIA), which tracks 30 prominent stocks. Investors also can turn to magazines and newsletters devoted to analyzing particular stocks and markets. Certain cable television programs provide a constant flow of news about movements in stock prices. And now, investors can use the Internet to get up-to-56

the-minute information about individual stocks and even to arrange stock transactions.