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.
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.
[1][2] Algorithmic trading allows investors to fine-tune their computers to scan live news feeds and watch for items affecting any listed company.
Today social networks are more than just a space to communicate and share ideas, it has become the information source that can rock financial markets to their ground.