Experts at the London Stock Exchange believe that a huge proportion of trading is now done using algorithms. In some markets, it?s estimated to be around 80 percent of trading volumes, which means that it?s become a huge part of financial trading. Software that can recognise patterns and make the appropriate trades is now in very high demand, with many people willing to pay large sums of money for the technology. This is prevalent across the board, with stocks, currency and commodities all involved. The question then, is how effective is this method of trading, and is it better than manual chart observation?