I am a Software Developer over 20 years. I have been into stock market activities also, as an investor since 1985 and then an active trader since 2001. Whenever not on a Software Development project, I am connected to National Stock Exchange during trading hours followed by late night studies on day's market actions. I am pretty well aware of High Frequency Trading (HFT), Algo Trading and other concepts that make individual stocks and the index move, 100 times in a minute or two.