I have been being the client of Karvy Stock Broking Limited since August, 2014. I highly satisfied with their services. I do trades daily. Their brokerage rates are also very nominal. They send me monthly portfolio reports. They are sending a lot of research reports. Whenever I do trade, immediately a confirmation SMS is sent to my mobile number. The account is highly secured with "2 Factor Authentication" of password and security question. Their app is also user friendly. Sometimes it takes a little long to connect with the server. Otherwise everything is good.