The Sensex lost 155.71 points on Friday to close the week on a negative note at 17,574.53 owing to selling by funds and retail investors in blue-chip scrips amid mixed worldwide signals.

In contrast, the broad-based Nifty also ended the week on a lower note at 5269.05, down 51.55 points.

The equities began the day pessimistically with the Sensex belling at 17,705.11. No major oscillation was recorded all through the day.

At last, it ended the day in the red terrain at 17,574.53 after losing 155.71 points.

Technology, metal, FMCG, real estate, IT, capital goods and select auto companies' shares remained under pressure.

According to brokers, weak global signals weighed on equity benchmarks as well.

Select oil and gas, telecom and power scrips moved up.

The administration has decided to free petroleum products from its clutch that will be now driven by the market rates.

Another news, which weighed on the market, was that RIL and RNRL inked a revised gas supply master arrangement (GSMA).

All oil and gas companies' shares reacted optimistically and remained the most active on exchanges..

The overall breadth of the stock market remained feeble. On BSE, 1772 shares posted losses as compared to 1080 shares, which recorded gains.

The overall turnover remained at Rs 4471 crore, lower than Rs 5046.77 crore on Thursday.

On the BSE, key indices that tumbled were Bankex by 2.19 pc to 10752.74 pts, Metal by 1.85 pc to 14882.71 pts, IT by 1.42 pc to 5323.87 pts, Realty by 1.08 pc to 3149.64 pts, TECK by 0.96 pc to 3264.27 pts, CG by 0.96 pc to 14471.41 pts and FMCG by 0.93 pc to 3205.50 pts.

The major losers in the list included ICICI Bank, M&M, Wipro, HDFC Bank, HDFC, Jindal Steel, SBI, Tata Motors and TCS.

The shares, which recorded gains, were ONGC, RCom, Cipla, RIL and Maruti Suzuki. (With Inputs from Agencies)