After a better spell, pivotals on the Bombay Stock Exchange (BSE) reacted on emergence of profit-taking coupled with lack of institutional support. Sensex dropped by 44 points mainly due to the fall in heavy-weighted stocks in the latter part of the session.Sensex (BSE sensitive index) dropped from the day's high of 4681.06 to the low of 4581.74 before closing at 4585.92 with a net loss of 43.69 points compared to the previous level of 4629.61. The BSE-100 index eased by 9.83 points to 2151.36 from the previous close of 2161.19.Brokers said the new account started on a better note following lower carry-forward charges (badla) of around 12 per cent per annum in the last settlement coupled with higher purchases during last week by foreign institutional investors (FIIs) who generally turn sellers at this period of the year due to redemption pressures.The profit-taking was also due to end-account considerations on the National Stock Exchange (NSE) on Tuesday. In the specified group, Sun Pharma, ABB Ltd, Gujarat Gas, Madras Refineries and Escorts were locked in the upper circuit filter after exhausting the daily permissible limit of 8 per cent. Of the 144 specified scrips, 82 registered losses while 61 recorded sharp to moderate gains and one held steady.Pentafour Software remained the most active scrip with a turnover of Rs 333.28 crore of the total volume of business of Rs 2364.49 crore. Pentafour Software gained by Rs 35.15 to Rs 730.15.Zee Telefilms and Himachal Futuristic firmed up by Rs 136 and Rs 14.95 to Rs 5236 and Rs 341.30 respectively. However, Satyam Computer, Ranbaxy Lab, Hindustan Lever, Hindalco, Infosys Tech, ITC, Mahindra, NIIT, Reliance SBI, TELCO and TISCO remained subdued.