The S-P BSE Sensex and NSE Nifty 50 indexes ended Wednesday's volatile session on a weak note as banking, FMCG, metal and financial services shares came under selling pressure.

The benchmarks switched direction over 10 times during the session.

The Sensex moved in a range of 600 points and the Nifty 50 index touched an intraday high of 10,003.60 and a low of 9,833.80.

India VIX, the gauge of expected volatility, rose 1.5 per cent to 33.47.The Sensex ended 97 points or 0.29 per cent lower at 33,507.92 and the Nifty 50 index fell 0.33 per cent or 33 points to close at 9,881.15.Six of 11 sector gauges compiled by the National Stock Exchange ended lower by the Nifty Financial Service index's 0.8 per cent fall.

Nifty Bank, FMCG, Metal, Private Bank and PSU Bank indexes also fell around 0.5 per cent.On the other hand, Nifty Media index was top gainer, up 1.7 per cent.Mid- and small-cap shares ended higher as Nifty Midcap 100 index rose 0.1 per cent and Nifty Smallcap 100 index advanced 0.5 per cent.Bharti Infratel was top Nifty loser, the stock fell 4.5 per cent to close at Rs 206.

Kotak Mahindra Bank, ITC, Power Grid, Mahindra - Mahindra, Shree Cements, Bajaj Finserv, Hindalco, Asian Paints, Vedanta and HDFC also fell between 1.5-2.3 per cent.On the flipside, Maruti Suzuki was top gainer, the stock climbed 4 per cent to end at Rs 5,725.

Bharti Airtel, Wipro, Britannia Industries, Axis Bank, UPL and IndusInd Bank were also among the gainers.The overall market breadth was positive as 1,438 shares ended higher while 1,120 closed lower on the BSE.