Shares of sugar companies surged up to 13 per cent on the BSE in Thursday's intraday trade on the back of heavy volumes as analysts remained bullish on the sector on expectations of strong growth. Among individual stocks, Dalmia Bharat Sugar and Industries surged 13 per cent to Rs 481.40, hitting its 52-week high on the BSE. Magadh Sugar & Energy rallied 10 per cent to Rs 677, followed by Uttam Sugar Mills (8 per cent at Rs 443), Avadh Sugar & Energy (8 per cent at Rs 716), Balrampur Chini Mills (6 per cent at Rs 441.95), and Dhampur Sugar Mills (6 per cent at Rs 298.70). By comparison, the S&P BSE Sensex was down 0.02 per cent at 67,454 at 10:43 AM.