I have posted on this more than once and I recommend Tom McCafferty's book _Options Demystified_ for an overview of the way that trading works from an insider perspective. The book has nothing to do with options hardly. His observations still apply and especially where there is institutional and large retail interest. HPIL Lata.
Thanks for making it clear to those who have open minds and want to know more about the state of the art of how the stock market operates using the modern tools of technology and human interaction in this very challenging industry.