|This article needs additional citations for verification. (March 2013)|
Trading the news is a technique to trade equities, currencies and other financial instruments on the financial markets. Trading news releases can be a significant tool for financial investors. Economic news reports often spur strong short-term moves in the markets, which may create trading opportunities for traders. Announcements about corporate profits, a change in management, rumors of a merger, are events that can cause a company's share price to move wildly up or down. Interest rates, unemployment and export rates, or the central bank's policy shifts, can cause a deep change of an exchange rate.
Investors trading shares of a listed company know there are certain events that cause the share price to rise or fall — sudden changes in energy prices, a labor strike at a supplier, a poor month for the sales, for example. Trading the news is the technique of make a profit by trading financial instruments (stock, currency, etc.) just in time, and in accordance to the occurrence of those events.
Event-based algorithmic trading, also known as programmed trading, is not a new phenomenon. This trading technique has been increasing in popularity since the early 2000s. As of 2009, studies suggested HFT firms accounted for 60-73% of all US equity trading volume, with that number falling to approximately 50% in 2012. Algorithmic trading allows investors to fine-tune their computers to scan live news feeds and watch for items affecting any listed company.