The BSE benchmark Sensex snapped a three-day winning run to end around 13 points lower as cautious investors booked profits in stocks like ICICI Bank, HDFC, TCS and Tata Steel ahead of monthly settlement in the derivative segment.

Sensex, which had gained 487 points in the last three sessions and reached one-week highs, declined by 13.18 points, or 0.07 percent to 20,147.64.

Tracking overnight gains in US where Dow Jones Industrial Average hit record high, Sensex had touched intra-day high of 20,216.49 at the outset but trading was marred by bouts of volatility.

Traders said investors also appeared to be avoiding taking fresh positions ahead of Friday’s fourth quarter GDP data release while a weak rupee, which touched a 10-month low, was fanning fears that inflation will rise soon.

Similarly, wide-based National Stock Exchange index Nifty eased by 6.95 points, or 0.11 per cent to 6,104.30.

Sectorally, the BSE Realty sector index fell the most by 2.50 percent to 1,786.45, followed by 1.13 percent drop in metal index, banking index lost 0.82 percent and power index by 0.77 percent.