Are there not hedge funds that attempt to use algorithms to spot longer term (ie. days, weeks, months) market trends and then buy and sell on that information?

Are there not hedge funds that attempt to use algorithms to spot longer term (ie. days, weeks, months) market trends and then buy and sell on that information? I think it's pretty crazy to say that humans will always make the decisions, computer can process more information faster then any human can. At some point computer programs will be able to make more accurate market predictions then humans, and at that point the "robots" really will be in control.