Critics contend that activities such as flash trading, naked access, and dark pool trading create a market in which
certain traders can unfairly exploit others. The Wall Street Reform and Consumer Protection Act of 2010 gave the
Commodity Futures Trading Commission (CFTC) expanded powers to investigate and prosecute disruptive trading
13. The Dow Jones Industrial Average (the DJIA or the Dow) is the most widely reported stock market index. The
DJIA, first established in 1896, is an index based on the values of 30 large (in terms of sales and total assets)
In 1966, the NYSE established the NYSE Composite Index to provide a comprehensive measure of the
performance of the overall NYSE market. The index consists of all common stocks listed on the NYSE. In
Standard & Poor’s established the S&P 500 index (a value-weighted index) consisting of the stocks of 500 of the
largest U.S. corporations listed on the NYSE and the NASDAQ. The NYSE stocks included in the S&P 500 index
account for over 80 percent of the total market value of all stocks listed on the NYSE. Thus, movements in the
The Wilshire 5000 index was created in 1974 (when computers made the daily computation of such a large index
possible) to track the value of the entire stock market. It is the broadest stock market index and possibly the most
accurate reflection of the overall stock market. The Wilshire 5000 index contains virtually every stock that meets
14. In a price-weighted index the stock prices of the companies in the indexes are added together and divided by an
adjusted value, (or divisor). Dow indexes are price-weighted averages. The divisor was set at 30 in 1928, but due to