Shares of little known edible oil maker Vegetable Products Limited have surged a whopping 975 per cent or 11 times in calendar year 2021. The BSE-listed penny stock has been hitting upper circuit on a daily basis since November 25 and its circuit filter has been revised to 5 per cent from 20 per cent last month. In the last 27 sessions, the stock has surged 430 per cent.