Back in 2004-2005 or so, Some real estate stocks were really hot. I remember punching in my buy orders in Unitech without getting a single share for many many days as open price would be up at upper circuit. If I remember well, the stock was in a continuous circuit for more than a month. Somehow, after many days of trying, I manged to buy a few shares right at the top. Thereafter, continuous lower circuits. Rest is history