Domestic benchmark indices eye a weak start to the session, tracking overnight fall in US markets and a lacklustre start for Asian peers. At 7.30 am, SGX Nifty was ruling 59 points lower at 15,782. A lot of stock-specific action amid Q1 business updates and ahead of earnings season could keep the indices volatile. That apart, investors will track the Federal Reserve minutes for more clues on when the US central bank may begin tapering the substantial asset purchases. Action will return to the primary market today as two IPOs - Clean Science & Technology and GR Infraprojects - will open on Wednesday to raise a total of Rs 2,500 crore. Ahead of the IPO, GR Infraprojects garnered Rs 283 cr from anchor investors on Tuesday and Clean Science and Technology Rs 464 crore. Most analysts have 'subscribe' ratings on both issues.