The capital market started on a positive note but ended the day in the red as the sentiment turned negative after rupee gained further strength.
The BSE Sensex breached the 21,000-level for the first time since 2010.
The Sensex opened flat at 20,766 against the previous close 20,768. It touched a high of 21,039 and low of 20,657 before closing with a loss of 42.45 points at 20,725.43.
Turnover on the BSE was lower at Rs 2,064 crore against Rs 2,227 crore recorded on Wednesday.
The Nifty closed down 14 points at 6,164.35.
Index heavyweight Reliance Industries was down one per cent at Rs 885.
IT stocks down
IT stocks declined as the rupee rose against the dollar on expectations that the US Federal Reserve will maintain stimulus after the disappointing job data for September 2013 released early this week.
Infosys was down 0.43 per cent at Rs 3,310, TCS fell three per cent to Rs 2,009, while Wipro dipped four per cent to Rs 471.
GAIL rose one per cent to Rs 351 after the company had announced yesterday after market hours that it has signed a Gas Cooperation Agreement for natural gas infrastructure and city gas distribution with the Department of Industries, Government of Bihar.
NHPC slumped five per cent to Rs 19 after it announced after market hours a share buyback at Rs 19.25 aggregating to Rs 2,368 crore.
Major gainers include Suzlon Energy (5%), Federal Bank (5%), Adani Enter (4%) and Tata Global (4%).
Major losers were Financial Tech (5%), Unitech (5%), JP Power (5%), HCL Tech (5%), NHPC (5%) and Wipro (4%).