Sigma Advanced Systems share price will remain in focus on October 27 after the company secured an order worth USD 102.23 million, approximately Rs 973 crore, from a NATO customer for the manufacture and supply of Base Bleed (BB) units for 155 mm artillery ammunition. The order is scheduled to be executed over a period of 12 months. At 09:18 am, Sigma Advanced Systems was quoting at Rs 853.50, up Rs 32.35, or 3.94 percent, on the BSE.