Going ahead, further downside is likely once the support level of 10,300 is breached, in which case, expect Nifty to test 10,270, followed 10,200. Meanwhile, any bounce towards the level of 10,450-10,500 is likely to see a sell-off. Top stocks for the day: Indian Grid Trust, Prime Focus, Mahindra and Mahindra, Sun Pharma, Fortis Healthcare, Vardhman Special Steel, Vascon Engineers, Gayatri Projects, Religare Enterprise and Advance Enzyme.