Cipla, Dr Reddy's, Divi's Lab and Sun Pharma lost 1-3 per cent each on the BSEThe criteria indices tumbled nearly one percent in the late-afternoon session to end near the lows of the day, amidst heightened volatility.

The BSE Sensex swung in a variety of more than 800 points prior to ending the session at 48,253.51, weaker by 465.01 points or 0.95 per cent and the NSE Nifty ended at 14,496.50, down 137.65 points or 0.94 percent.

The BSE Midcap and BSE Smallcap indices, however, ended with modest losses of around 0.3 percent each.All the BSE sectoral indices ended in the red, with the exception of the PSU banking index.

The rupee ended greater by 7 paise at 73.86 per dollar.

It had opened partially higher at 73.90 per dollar versus previous close of 73.93 and sold a series of 73.76-73.97 throughout the day.Among specific shares, Tata Customer Products dived almost 5 per cent to top the loser's list amongst the BSE stocks.

Pharma stocks likewise had a weak session, with Cipla, Dr Reddy's, Divi's Lab and Sun Pharma losing 1-3 per cent each.

Index heavyweights such as Reliance Industries, HDFC Bank and HDFC Bank also compromised by around 2 percent each.Among stocks in the news, Tata Chemicals shares plunged more than 9 percent to Rs 708 after the chemicals giant reported a huge decline in earnings in the quarter ended March 2021.

On the other, SBI Life Insurance got more than 2 per cent to top the gainers list on the BSE.

Shares of state-run oil merchants also jumped after the country's largest state-run oil seller Indian Oil hiked the costs of petrol and diesel after a pause of 18 days.

Bharat Petroleum and ONGC got more than a per cent each on the BSE.The BSE market breadth was weak.

Out of 3,141 stocks traded on the BSE, there are 1,402 advancing stock as versus 1,563 declines.