Program trading

<p>Program trading is a type of trading in <a href="/facts/Security_(finance)/lJRYHKgD">securities</a>, usually consisting of baskets of fifteen stocks or more that are executed by a computer program simultaneously based on predetermined conditions. Program trading is often used by hedge funds and other institutional investors pursuing index arbitrage or other arbitrage strategies. There are essentially two reasons to use program trading, either because of the desire to trade many stocks simultaneously (for example, when a <a href="/facts/Mutual_fund/gyz5AKUP">mutual fund</a> receives an influx of money it will use that money to increase its holdings in the multiple stocks which the fund is based on), or alternatively to <a href="/facts/Arbitrage/sFFMI3nk">arbitrage</a> temporary price discrepancies between related financial instruments, such as between an index and its constituent parts.
</p><p>According to the <a href="/facts/New_York_Stock_Exchange/XgSV32lk">New York Stock Exchange</a>, in 2006 program trading accounts for about 30% and as high as 46.4% of the trading volume on that exchange every day. <a href="/facts/Barron%2527s_Magazine/Pg8j4sVr">Barrons</a> breaks down its weekly figures for program trading between index arbitrage and other types of program trading. As of July 2012, program trading made up about 25% of the volume on the NYSE; index arbitrage made up less than 1%.
</p>

Program trading open-in-new

Program trading