Mumbai: Equity benchmark indices fluctuated between gains and losses on Thursday ahead of the expiry of December series futures and options (F&O) contracts.

At 12:10 pm, the BSE S&P Sensex was down by 98 points to 41,363 while the Nifty 50 slipped by 27 points at 12,187.

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Except for Nifty metal and auto, all sectoral indices at the National Stock Exchange were in the red. Nifty PSU bank dropped by 0.75% but Nifty metal rose by 1.07%.
Metal majors had a good time with Vedanta moving up by 2.8% at Rs 152.20 per share. JSW Steel rose by 1.8% and Tata Steel by 1.5%.
Auto companies Mahindra & Mahindra and Eicher Motors jumped by 1.1% and 1.05% respectively while Bajaj Finance and Bajaj Finserv rose by 0.7% and 0.6%. IT giants HCL Technologies and Tech Mahindra showed marginal gains.
However, IndianOil Corporation lost by 1.5% to Rs 125.40 per share. Yes Bank was down by 1.2%  after a rating downgrade by Brickwork. Coal India, Bharti Airtel and Larsen & Toubro edged lower by 1% each.